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    • #13935
      123toid
      Keymaster

      Well I thought I would tell you guys about a new project I have going on. I was bored this week during my vacation and looked and found this awesome go-kart frame for a really good deal. Unfortunately it had no motor. No worries I’ll just add one. Here’s what the frame looks like. 

      It’s actually in excellent condition. It came from a go-kart called a crossfire 150. It was just an inexpensive Chinese go-kart, but they did a really good job with their frame. Especially the suspension in the front. It’s definitely a lot better than most of these other go karts. Also my friend Robbie just showed me that the front tires are on backwards. So I guess I’ll switch  those around. Whoops.

      I didhave to buy an engine for it and since this is going to be for my kids as well, I just decided to get the harbor freight predator 250. 

      Nothing real special here. It’s about $150 and is used quite often in go-kart builds. They actually sell quite a few upgrades for it is it’s really a clone of a Honda engine that’s used quite often. I will have to do a few tricks to it such as removing the governor putting a spring on it to return it back to the off position when you’re not pressing on the accelerator and rotate the pull start to the back side of the motor.

      I’m hoping to have this completed in about 3 weeks. But I don’t know how to weld yet, so I’m going to have to rely on the welder’s time frame. He’s going to have to weld me on the mounting plate for the go-kart motor. I’ll show you some of the unique problems I have using this motor on this frame on another post. But I hope this will be a lot of fun for me and the kids. 


    • #13936
      tvor-ceasar
      Moderator

      Nice find. Those Harbor Freight engines are good utilitarian units, open to many mods. Plus they’re “inexpensive enough” that if you hurt it, it won’t hurt your wallet. Been watching any channels for inspiration? 

      Oh man, I haven’t welded in years. Once I got past the Pigeon poop phase, I could lay down a decent bead with a cheap old Sears stick welder. Fun days. Keep us posted.


    • #13937
      123toid
      Keymaster

      @tvor-ceasar 

      The sad thing is I have a welder, but I haven’t actually attempted to weld anything yet. I feel like something as important as whether the engine will stay on or not is probably not the best thing to weld first. So I’ll probably leave this one to the professionals. 

      I’ve been watching a few different YouTube channels. I’ve been watching a lot of cars and cameras. https://youtube.com/c/CarsandCamera

      I also found this great video that goes over how to remove the governor without having to internally remove it. Although I would have been happy to internally remove it if it was necessary.

      I also found this video which kind of goes over how to set up the predator engine when you get it. Such as removing the oil sensor and a few other things.


    • #13940
      tvor-ceasar
      Moderator

      ^^ I see 3 of the channels I had in mind – Cars and Cameras I’ve watched for years now. Also suggest Grind Hard Plumbing, Build Break Repeat, and Vasily Builds. There’s a ton more out there. 

      Yeah, the engine mount is kinda important, and would be best left to someone with experience. 😁 You can practice laying down a good bead on some scrap, reserving the decent stuff for when you are more confident. Just remember to  go in tiny circles with the rod or wire, like you have a slight tremor in your hand. That’s how they get those little waves in the weld. Then practice on depth of weld, because that’s what actually holds it together. I bet you’d start laying down an acceptable bead by the end of the first day, if not by the middle of that day. It’s a good skill to have. You never know when you’ll have to fix something on the kart or tractor/mower/car etc.


    • #13946
      123toid
      Keymaster

      @tvor-ceasar 

      I think that’s a good idea. I’ll probably go ahead and start practicing on some scrap outside. I do have to get some welding sticks though. But I really do want to learn how to weld for a lot of reasons. So I’ll probably go ahead and take your advice.

      I did do some more work on the go-kart. It didn’t take any pictures, but I took off some old engine mounts that we’re going to get in the way of the new engine. I also took off the old wiring harness that is no longer needed. And I tested out the gas tank that came with the crossfire originally. They had a secondary gas tank wired to it, so I was thinking that maybe the original leaked. But after doing a leak test, it actually is fine. 

      I I did go ahead and remove the gas tank on the harbor freight engine. I got to say it looks a lot meaner without that gas tank on top. I do think I’m going to go ahead and order a different air filter. I think it’s going to end up being necessary due to the way it’s going to sit in the frame. Well I’m at it, I’ll probably just order a new exhaust as well. I already have a new jet for the carburetor. So I have a few minor upgrades to it. 

      The torque converter should be here tomorrow and the engine mount the day after. Then hopefully I can figure out exactly how I need to mount this. If I have everything that I need I’m going to go ahead and take it over to the welder this week. If not, it’ll end up being next week.

       


    • #13952
      tvor-ceasar
      Moderator

      Quick question.

      On the Predator, doesn’t the output shaft go on the left (left leg) side for normal rotation? If so, you’ll have to flip the sprocket assembly around on the axle to get things to line up, and take that into account when setting up the engine mounting plate for welding, along with any chain tensioner assembly. Can’t hurt to check rotation.

      (Also, new engine, don’t forget oil. 😀 )

       


    • #13955
      123toid
      Keymaster

      @tvor-ceasar 

      You’re absolutely right. But I’m going to do something just a little bit different. It’s kind of funny though, my dad said well you just flip the motor around. My response, because I don’t want to go backwards all the time LOL. But what you can do instead is actually buy a jack shaft and extend it the opposite way. So instead of having the gear in the normal spot on the torque converter, you actually buy a much longer Jack shaft. This Jack shaft will actually go out the right hand side and the drive gear will connect to that. And that will allow you to now have your drive gear right in line with your sprocket depending on the size of the jackshaft you get. Here’s a good picture of what someone else did. I might have another issue though, I’m not sure until I actually get the engine mount on as well as the torque converter. My main concern now is that the frame might get in the way. I know I can work it out, I’m just not sure exactly how until I see it. 


    • #13956
      123toid
      Keymaster

      I might end up having to replace the air filter and exhaust as well. I’m just not sure that they’re going to fit very well with as far back as I’m going to have to move the motor. It’s not a real big deal, I was planning on doing it anyway. I just wasn’t sure if I was going to do it right away. I just might end up doing it sooner than later though.


    • #13961

      That looks like a lot of fun. Both the building and the riding. 

      Speaking of welding… This HFT welder… Flux 125 Welder (harborfreight.com) Is a pretty good unit… I have the 90 amp wire feed version they stopped selling awhile back, but it’s basically the same thing as far as how it works. 

      You would be amazed at how easy it is to weld with this thing. It never sticks like a stick welder, and it’s very intuitive to adjust the amperage and feed rate to get good penetration without burning holes in even sheet metal. I was amazed how nice of a job it did and the quality results I got for so little money. I think you could get 1/4″ thick stuff to hold well with multiple passes.

      I have welded thicker than 1/8″ stuff onto my lawn tractor and it’s held perfectly. 

      I see the wisdom in getting a pro welder do some of the heavy duty stuff, I do that sometimes too for  beefier pieces that need to be Tom-Proof, but for almost everything else, I’m able to do it with my little 90 amp wire feed.

      Just trying to help you spend your money. 🙂

      TomZ

    • #13963
      123toid
      Keymaster

      @zarbo-audio-projects  thanks tom, I might have to look into that. As of right now I do have a welder that was given to me from a gentleman that was clearing out the small airfield by my house. I have yet to use it and it is a stick welder so I’m sure it’s going to be fairly hard. But I might get some material and test it out. The thing that kind of stinks about it is it’s a 220 volt, so I do have to run an extension out of my shop. So it is a little bit harder to hook up.

       I did get the torque converter in today. It looks like I’m going to have to really finagle how I mount this. I might end up having to get a few aftermarket parts that Orient themselves a little differently, that way I don’t have to cut into the frame that protects the motor. But I’m going to go ahead and mount it tonight and take a look at what I think is going to be an issue. Maybe I can somehow figure out a way around it.


    • #13966
      tvor-ceasar
      Moderator

      @123toid If you learn to weld well with a stick/arc welder, the other types of welding come that much easier. (Lincoln is a good brand)

      If you need more room for the engine, width wise, you could relocate the shocks outward by about an inch or so each side. Use a long rod that just fits though the mounting holes, some spacers and castle nuts w/cotter pins to hold them in place. If there’s flex in the rod, you can put a mid mount under the engine mount plate to stiffen it up, and do the same with the top rod via the crossbar where they are mounted. Actually easier than cutting and re-welding/fabricating all new mounts.


    • #14039
      123toid
      Keymaster

      @tvor-ceasar 

      Those are great points.  It’s not really room for the engine that I am most concerned with, but more the size of the sprocket I can use due to the welded part of the frame. I am going to have to go with a smaller chain and I am not sure how that will do. I have come to the conclusion that if this engine doesn’t work well, I will go ahead and buy a cheap yard cart and throw this engine on it and stick a snowmobile engine on this one 😆 .

      Unfortunately, I ran into a few issues.  I went to add oil in the motor the other day, only to find oil in it already.  Then I loosened the bolt to the carb and gas came out.  This motor sure was used and then sold to me as used. I took it back and exchanged it.  When I got home I realized they gave me the Hemi version. Which is a good motor, but the parts I already purchased won’t work on the Hemi version. So now I have to go back to another Harbor Freight and see if I can exchange it again for a non hemi version. 

      Of course, every Harbor Freight is completely sold out of this engine, so the closest one to get it is an hour and a half away 🙄  I’m not looking forward to that drive tomorrow.  But it looks like it might be necessary. 


    • #14040
      123toid
      Keymaster

      Here’s a question about engine location.  Anyone have any suggestions?  I am thinking of placing the motor further towards the driver (more like a mid engine) and running the chain around the frame. If I do that, I might be able to run a larger chain and sprocket later.  Of course, I can always change how it is run at a later date and time.  But this is what I am leaning towards.

       


    • #14044
      tvor-ceasar
      Moderator

      One thing I do know from watching all these videos is that once you strip off the tank and airbox, the engine is much more petite than it’s original packaging belies. Doing so should help somewhat, and you did allude to that.

      Next is the use of the jackshaft, mentioned way above. Best thing about that is you can mount that almost anywhere, forward/back, up/down, so as to be able to get the gearing you need, and you can even compound the gearing via the jackshaft, so that you can get close to what you need using the main sprocket you already have.

      Really, the best thing to do at the moment is grab some scrap plywood and mock it up to see what you really can and cannot do. Then proceed from there.

      Ugh, sorry about all the engine fiasco. Hope you get a brand new one this time around. I’d open it up before I left the store to make sure.


    • #14063
      123toid
      Keymaster

      I was able to exchange the motor out today.  Unfortunately the closest to me was 2 hours away!  But I did get it and removed the governor when I got home. Tomorrow, if I get time, I’ll try to start it and run it for a few hours.  Once I know it is working well, I’ll replace the flywheel with the billet flywheel and drain the oil. I think most of the other parts won’t come until Wednesday, so I probably won’t get it finished this week, but who knows.  If I can, the kids and I will have to test it out this weekend. 

      I am still concerned that it will be pretty slow.  But no matter what, I think the kids will enjoy it. 


    • #14071
      GrumpE1
      Participant

      Since the dawn of Legends, our legendary Hero’s & Celebs have had vehicles to reflect their status with a touch of practicality.

      Batman, the legendary Bat mobile

      Mutant Ninja’s had the Turtle Van

      The Fantastic Four, their Fantasti-Car

      Shield’s Agent Coleson had Lola

      The Pope, his Pope mobile

      Now we’re privy to see the birth of our very own Mr Toid’s, Toid Mobile aka DIY Blaster

      It may not have a turbo, nor the ability to fly or launch rockets… but even money says it’s going to rock the trails with sound like no other go kart… maybe? 😉

      kidding aside, it looks to be a bunch of fun. If it’s not fast enough for flat ground, change the sprockets for low end… go climb hills, and blaze your own trail. No matter what, it’s quality time with the kids.

    • #14073
      123toid
      Keymaster

      Lol! That’s hilarious 😆😂🤣. I’ve already come to the conclusion that if it ends up not being fast enough for this heavy go kart, that all get a smaller frame for this engine. Then I’ll look for a cheap old snowmobile and put that engine on this one. I mostly concerned of the power to weight ratio. Especially since I’m limited in the size of the sprocket I can put on this. But thank you for the great advice.

       

      I guess we’ll see. I got most of the parts here to do the build. So if I get the time, it’s possible that I could have it done sometime this week. 


    • #14074
      123toid
      Keymaster

      The old sprocket wasn’t going to work. So I bought this new sprocket adapter that allows you to use split sprockets. For this go-kart I think it’s a good idea. If I didn’t do a split sprocket, I’d have to take the rear axle and tire off every time I want to change the sprocket. I showed my wife it and she just liked how it looked. So I guess that is a win.


    • #14075
      GrumpE1
      Participant

      ” …that allows you to use split sprockets”

      Sweet!

      “…look for a cheap old snowmobile… “

      I’ve no experience with snowmobiles, so excuse this if it seems obvious. My first thought was a motorcycle engine… gas & clutch off cables, gears and drive sprocket. How or what does the snow mobile engine have going for it… are they automatic tranny… are they also sprocket drive?

    • #14076
      123toid
      Keymaster

      @grumpe1 

      I thought about it motorcycle engine as well. But the biggest problem with the motorcycle engine is most of them are manual. So then you’d have to figure out how to shift the transmission. 

      A snowmobile engine is almost identical to a predator style engine. They work off a form of a continuously variable transmission that is a belt drive. So they’re very easy to adapt. In fact if you look it up on youtube, quite a few people have done it. Some have been more successful than others. 

      Whether I’ll actually do it, I don’t know. I mean it’s something I would really like to do.. but I definitely want to just get it running first.

       


    • #14080
      123toid
      Keymaster

      Another interesting part to this adventure. I could not get these 5/8″ pillow blocks on the 5/8″ jackshaft. I did after seeing just a little at the very end to get some of the burs off. However it still wouldn’t fit. So quick trick was to throw the Jack shaft in the freezer. I left it there for about a half a day came back to it and they slid right on. Of course I decided to take them off afterwards and that was not fun 😁. Overall, worked out really well.


    • #14092
      123toid
      Keymaster

      @grumpe1 

      I thought about it motorcycle engine as well. But the biggest problem with the motorcycle engine is most of them are manual. So then you’d have to figure out how to shift the transmission. 

      A snowmobile engine is almost identical to a predator style engine. They work off a form of a continuously variable transmission that is a belt drive. So they’re very easy to adapt. In fact if you look it up on youtube, quite a few people have done it. Some have been more successful than others. 

      Whether I’ll actually do it, I don’t know. I mean it’s something I would really like to do.. but I definitely want to just get it running first.


    • #14093
      123toid
      Keymaster

      Well I did a little bit of work on the go-kart today. I was able to put an adapter plate on the axle to use the split sprockets. In order to do this I had to disconnect the rear brake both tires and drop the axle. So you can probably see why I want to put on split sprockets. It’s quite the endeavor to change out the sprocket if you ever want to. And I have a feeling I’m going to have to change the sprocket quite a few times in order to get the ratio correct. At least in the beginning. 

      There’s also a piece of metal that was welded on that appears to have held a guard to protect the chain and sprocket. That guard was not with the go-kart. So I went ahead and tookmy new angle grinder and cut it off. This allows me to have more room for a larger sprocket and gives me more room for the chain. Next step is to see how the rest of the pieces fit. Then hopefully weld on the metal sheet that the engine will be bolted down to. I have a pretty busy rest of the week, so it probably won’t get done until next week.


    • #14099
      GrumpE1
      Participant

      “…going to have to change the sprocket quite a few times in order to get the ratio correct…”

      If you’re buying another sprocket, go so big as you have frame clearance. There’s not a lot of HP there, and it’s a large kart with two seats… you and a youngin will be a few hundred pounds.

      IMO, there’s no such thing as too much torque..lol cruising speed will be lacking, but it’ll snap coming off the line… and when you’re doing tight figure 8’s, it gives you your best chance at breaking the (a) tire loose and kickin’ up some dirt. It also lets you creep… over rough ground, thru gully’s, up grades…

      Also, you’ll start with the longest chain. It’s easier to pop links out rather than to be adding. Master links are the weak link, so one is best, though if you have a tensionner, it may provide some adjustment.

      Cruisin’, calls for a tranny… albeit a snowmobile engine or motorcycle.

      “the biggest problem with the motorcycle engine is most of them are manual”

      Don’t let that discourage you. If the price is right… go for it. Just make sure to get the spline shift pedal so you can make linkage. Nothing fancy, but a shifter between the seats and put the clutch lever on it… squeeze the clutch and pull/push to ratchet the gear.  Clutch is just cable & the same lever as on the bike. You’re creative enough to bend some rod and fab a base for a pivot point. 

      In any event, you know better what you’re going to use. This looks to be a boat load of fun, and I’m just a little envious of such a terrific project for you and the kids… and when it runs how you like… we look forward to seeing what kind of sound system you bless it with 😉

    • #14103
      123toid
      Keymaster

      @grumpe1 

      That’s a great call on the sprocket. I think I’m actually going to end up swapping out the sprocket and the chain. I started off with a small chain. Of course I didn’t realize it was a small chain until I got it. So I think I’m going to go with a thicker bigger chain. And I’ll try to go at least an eight to one ratio if I can do it. I know what the bigger 40 chain I can go within 8 drive sprocket. I’m not sure what the biggest rear sprocket I can get. But I’m thinking it’s going to be about a 64. I only have about 10 in to work with. And 10 inches is probably too much. So really under 10 in. 

      I did work on the engine a little today. I installed the new billet flywheel. Unfortunately I forgot to take a picture of that. I also installed a new exhaust and air filter. The main reasons why I installed these were due to clearance issues inside the frame. I have more width than I do height. I still have to change out the jet for the carburetor. Unfortunately I can’t find the right size screwdriver to get that out. So I’ll just head to the store tomorrow and get one.

      I did fire it up before I added the new exhaust and air filter. I was surprised that how much power it actually put out. But I definitely agree with you, I would much rather have more acceleration than top end speed. There’s really no reason to have high top and speed with where we’re going to be at anyway. The accelerations what’s going to make it fun.

       


    • #14104
      tvor-ceasar
      Moderator

      Instead of master links, get yourself a chain breaker. It pushes the pin out of the chain and then pushes it back in. You get the advantage of a solid chain – no literal weak link. And, you are not making an ever shrinking chain.


    • #14105
      tvor-ceasar
      Moderator

      I’ve seen a number of them, but when I saw this video, and the breaker he used, I thought that was just the cat’s meow.


    • #14110
      123toid
      Keymaster

      @tvor-ceasar excellent. When I figure out exactly what size chain I’m going to run, I’ll make sure to get one. Right now I have a size 35 chain, but I’m pretty sure I’m not up to a size 40. 

      I got all the upgrades done on the predator engine. The only thing I really had left to do was to change the jet on the carburetor. But I didn’t have the right size screwdriver, so I ran over to my local Ace and picked one up. 5 minutes later I got it up and running. It sounds mean.

      2643-20210903192608.mp4


    • #14116
      btrbandit
      Participant

      I noticed the “E85” sticker and that made me think of the AE85 (80ish Toyota Corolla).  That engine is probably as powerful as a mid-80s car so it should be a blast.  The split sprocket was a great idea as well.

    • #14185
      123toid
      Keymaster

      @btrbandit 

      Thank you. I do think I’m going to have to upgrade the chain though. I didn’t really know any better and got a small chain used in racing.  I don’t think it’ll last off road terrain.

      I did get some time to work on it. The back of the go-kart has a frame that protects the motor in case you compress the rear end. I could not physically fit the motor in it the way it was. So I ended up cutting it out. I’m not sure if I’m going to reinforce it or just cut the whole thing out. For now it’s just going to stay the way it is. I want to write it a few times and see if that rear compression is even an issue.

      I still have to trim that steel plate to make room for the chain. But once that’s finished, I’m ready to weld in place.


    • #14187
      tvor-ceasar
      Moderator

      Looks like you may only need to notch the plate where the sprocket on the jackshaft falls.

      As for that cage, what part actually contacts the frame? You may be able to do some creative reorganization (cutting/welding – you did start practicing, right? 😁 ) To gain some room for everything while keeping it stiff and strong.


    • #14188
      123toid
      Keymaster

      Of course I’ve been practicing….in my mind  😆 I’m thinking about just removing this little square with my cut off wheel. 

      This is how they used to connect. So I’d have to angle them out wider. It could be done. I’m just not sure if I want to. I’m almost thinking about building something completely different if I decide to keep something there. It it’s just in the way. Especially if I get a different exhaust which I want to. This one with no mufflers just a little bit too loud. 

       


    • #14191
      tvor-ceasar
      Moderator

      I’m just wondering how much that cage contributes to the overall rigidity and strength of the overall swingarm. Right now I see the weakest point being the pivots by the seat. If you remove the cage, even with the engine plate welded in, how much would that swingarm flex? Especially in a twisting motion left and right?

      What I was actually contemplating was to more or less cut the uprights off and swap sides so they are angled more upright or outward (missing the shocks of course) and then reconnecting them crosswise with an upward bow so you can gain the room you need.

      See, a good use of your mental practicing! 😉


    • #14194
      123toid
      Keymaster

      I was contemplating something like that. I don’t think it’s adding much to that part of the rigidity. But I’m sure it is adding something. It’s kind of interesting how it connects. That back part actually comes right off. It’s only connected to the frame and four spots. The shocks are bolt connected and then the front half is connected to the back half with two bolts. 

      I’m going to try to get a test run hopefully out of it next week. That is if I can get someone to weld the plates. I guess we will see.


    • #14260
      123toid
      Keymaster

      I’ve been really busy so I haven’t really got a chance to work on this for a while. But I was able to get a friend to help me weld on the plate to mount the engine. I have a few more upgrades to the engine I want to do and I have to resize the chain. Although this is probably not the chain is going to stay on there. I plan to go with a heavier duty chain something like a #40 but I should be able to easily figure out what the gearing ratio is that I want before I order all of that.



       


    • #14326
      123toid
      Keymaster

      Well I finished the go kart today. Ended up having to put on a 40 chain. The 35 chain just kept popping off. Overall, I’m really having fun with it. Both kids love it! They were sad when it was time to put it up. But the weather wasn’t really cooperating today. 

      I also plan to upgrade the springs to 28 lb to help with the higher RPMs. But that’s all I plan to do for the time being. 


    • #14327
      tvor-ceasar
      Moderator

      Looks good! Can’t wait to hear your impressions once you’ve run a few tanks of gas through it.


    • #14470
      123toid
      Keymaster

      Update. I’m really enjoying it. Unfortunately I have a few things going on. The first is the brakes went out. I ordered new caliper and it’s on its way. I took a quick video of me driving it through the woods. Keep in mind I’m going pretty slow because I have no brakes. But so far it’s really fun. I am having a problem with it going through belts. So I’m going to contact go powersports and see if they have an idea of what I should do next. See if I need to upgrade the torque converter or go to a clutch.

      2772-20211013164829.mp4


    • #14472
      tvor-ceasar
      Moderator

      Do you have the belt on the right way? The 2 sides are not, or should not be, symmetrical. One side should be closer to vertical while the other is on more of a slant. If you look at the pulleys, it should be evident which side is which. Putting the belt on the wrong way will cause the pulleys to only contact an edge of the belt instead of the whole face, accelerating wear and eventually exhibiting slippage.

      But yeah, check to see what the ratings are for the torque converter and belt. If it’s right near the weight and torque limits of the kart/engine, especially when loaded with 2 people, then an upgrade would be beneficial.

      Brakes are overrated, that’s what crash bars are for.😜 It sure looks like lots of fun. I bet everyone is enjoying it.


    • #14473
      123toid
      Keymaster

      @tvor-ceasar 

      I swear you know about everything. It’s pretty amazing. But yes I did make sure the belt was the right way. It’s kind of cool too because the belt actually tells you on it which way towards the engine. But of course it was watching some other videos where they explained it a little differently as well like the slanted side goes towards the outside of the torque converter. It also matches up with the torque converter which also has a slaint on it. But I am thinking of running a little bit too much for the weight. I might end up having to go to a 40 series torque converter. I really don’t want to go to a clutch, but if I have to I will.


    • #14474
      tvor-ceasar
      Moderator

      Thanks, I try to be well rounded. 

      I figured you had the belt on correctly, but had to ask anyway.

      The 40 series should do. I’m not sure, but I think that’s their popular “big boy” that is rated for way more power and weight than what you’re playing with. 


    • #14475
      123toid
      Keymaster

      @tvor-ceasar 

      You are definitely well-rounded. My wife said the same thing about me, but then I realized she was talking about my figure. 😆 

      Yeah the 40 series is typically between 8 to 18 horsepower. I’m not sure exactly how much horsepower the predator 212 puts out with the upgrades that I have on it. But as I continue doing more upgrades it’ll continue to add more horsepower and my understanding can go up to 12 horsepower or more. 

      My main concern is the weight of the buggy itself. It’s a lot heavier than what most people put a 212 on. I’m not sure if that’s actually an issue or not though. 


    • #14479
      tvor-ceasar
      Moderator

      Your wife and mine must be cut from the same mould, I almost typed the same thing! LOL 🤣 🤣 

       

      Yeah, I think it’s the weight of the cart more so than the engine output. There’s only so much surface area on those belts, and if they are smaller than the 40 series belt, I could see them wearing quickly under “more than design” load.


    • #14506
      123toid
      Keymaster

      Yeah, I think you’re right. I’ll see what they say. If they think I should go up to a 40 series, I may take a look for a real cheap snowmobile instead. It would be about as much, and definitely shouldn’t have an issue with the weight 


    • #14508
      tvor-ceasar
      Moderator
      Posted by: @123toid

      …It would be about as much, and definitely shouldn’t have an issue with the weight 

      This, he says, is true.


    • #15192
      123toid
      Keymaster

      Oops! I did it again! This time a one seater with a Predator 212 on it. I couldn’t pass it up, it was too good of a deal. This thing already runs. It’s perfect for one person. It’ll probably end up being the one the kids learn on, after I govern it. This one is clutch driven. I’m really interested to see how this drives compared to the torque converter. 


    • #15194
      Elliott
      Participant

      @123toid looks awesome! Does it used a brushed motor or something fuel based? I tell you what might be a fun thing to do, getting different tires for it, front and rear, and doing different mixes of tires to change the way it handles, could even have it be a drift cart if there’s enough power with the right tires and wheels. 🤣


      Elliott Dyson – Elliott Designs (YouTube) – 3rd year MENG Student
    • #15195
      tvor-ceasar
      Moderator

      @elliottdesigns The Predator 212 is a gasoline / petrol engine commonly available at a number of stores dealing with hardware or farm equipment here in the States. Not sure if they are sold elsewhere in the world (probably).

      Drift Kart, a pair of slicks and a CVT/Torque converter would do the trick there, especially if it were built out to a Stage 3 level of performance. (waaaAAAAAAAAAAAAHHHHH SKREEEEEEEE!) 😀


    • #15198
      Elliott
      Participant

      @tvor-ceasar no, unfortunately not a thing in the uk. I just had a look and the cheapest 2nd hand go carts I could find out of curiosity, they cost pretty close to what my actual car did 🤣. Not sure if it’s cheaper in America, probably is. Plus, not many proper go karting places over here anyway, so I can’t imagine there being many people that do this over here. People usually just go to a go karting place and you drive theirs.


      Elliott Dyson – Elliott Designs (YouTube) – 3rd year MENG Student
    • #15205
      123toid
      Keymaster

      @elliottdesigns You probably do have the predator 212 there, it’s just rebranded.  It is a Honda GX200 clone, made my the Chinese.  A company here in the US called Harbor Freight sells this version of the rebranded Chinese engine called the Predator. So yours wouldn’t be called the predator 212. In the US they retail for $150 (about 130 euros).  This entire Kart with engine cost me a little over what the engine itself would have cost.

      Having said that, it is a pretty cool general purpose motor.  Mainly used for farm equipment, log splitters and even pressure washers (in fact just bought a Westinghouse pressure washer with another rebranded 212 engine on it 🤣).  But in the US, since a lot of people use it for Go Karts and minibikes, you can buy a bunch of performance parts for them at sites like go power sports and omb warehouse. Eventually you can upgrade these things all the way up to 20hp!  It is pretty insane when you think about it. 

      This one I will probably keep standard for now.  And now I have a backup engine for my pressure washer 🤣 

       

      * It looks like the UK equivalent would be a Loncin.


    • #15207
      123toid
      Keymaster

      The Predator 212.  He used a spring to pull back the throttle when you aren’t pressing on it.  THat will probably be changed.

      It looks like he drove it hard and put it away wet.  The good thing, is everything looks to be a 40 chain.  So that sould be nice and stout for a kart this size.

      One thing I really like that he did.  He wired a run switch upfront.  That way when you want to shut it off, you don’t have to find the switch on the engine. 

      You can see the size difference though.  The buggy, is definitely bigger 🤣 


    • #15208
      Elliott
      Participant

      @123toid nothing wrong with returning a pedal with a spring is there? After all, that’s how it’s done with sim rigs, perhaps you don’t like the feel, that could be altered by having a spring of different length and/or spring constant, a spring that is longer than it needs to be should be very linear throughout the pedal movement, perhaps a setup like that might be more suitable?


      Elliott Dyson – Elliott Designs (YouTube) – 3rd year MENG Student
    • #15210
      123toid
      Keymaster

      @elliottdesigns that’s a good call. This spring is really only designed to make sure when you are completely off the gas, that the throttle on the engine completely shuts off. The way these onions are designed, without a return spring, the gas can often stay on a little. So I think it’s probably all right. You can also upgrade the carburetor to something like a mikuni carb. When you do that, then you no longer have to worry about this spring.


    • #22394
      123toid
      Keymaster

      Tried the new Go Kart out the other day. You can definitely tell it has a governor. But it didn’t stop us from having fun. This thing loves to slide, which is a lot of fun. But it definitely isn’t for those who don’t want to get muddy 🤣

      Now should I do something about that governor…


      • #22407
        Elliott
        Participant

        Seems you need a windscreen Nick! At least it’s loads of fun. Always loved go karting! Can’t imagine how much more fun an outdoor dirt track would be!


        Elliott Dyson – Elliott Designs (YouTube) – 3rd year MENG Student
    • #22409
      123toid
      Keymaster

      Yeah it’s been really fun. I’d like to set up on outdoor dirt track that we can just keep racing on. Right now we just kind of go through the woods and go in the yard wherever we want to go. Hopefully by the end of it I’ll have about four go karts. I have three, but only two working.


    • #23208
      123toid
      Keymaster

      Opps!! I did it again! Seriously. I might have accidentally bought another go-kart… Although it may not have been on accident. 😁 This go-kart cost me $100 and was in a sketchy part of Memphis. But I decided to take a chance on it. It was only $100, which I felt like the frame was going to be worth it even though I noticed that it had no seats. But if the engine ran it was going to definitely be worth it. I was assuming it had something like a predator 212 engine on it. Was I surprised when I bought it and found out it had a Honda 11 horsepower gx340 with electric start. That motor guess for $1400 brand new! So now I have to do some rearranging of motors. The big go-kart is now going to get the 340. This little black go-kart’s going to get the stock predator 212. This will be the learner go kart for my children. And the yellow one seater is going to get the souped-up predator 212. Should be a blast!


    • #23209
      123toid
      Keymaster

      For the black go kart, I ordered a few parts. I ordered a new throttle cable, the original carburetor (the ones on it did not work correctly), and a torque converter. It’s my understanding from research that I’ve done, the torque converter is better for small children as it allows it to engage in lower RPMs without burning up the belt.

      Things still to do:

      Build a seat out of plywood and foam.

      Either get the seat sliders unstuck or purchase new ones. That’s about $20.

      Figure out of good Governor setup for the kids.


    • #23210
      123toid
      Keymaster

      Maybei should paint it yellow to match tho others? Or maybe just add some bright red accents?


    • #23220
      tvor-ceasar
      Moderator

      OMG someone tried to make a seat out of a plastic barrel. I guess you work with whatcha got.


    • #23223
      123toid
      Keymaster

      I know, lol! It’s actually quite ingenious, working with what you got. Having said that, I will be replacing that. Funny thing is that’s not even the worst thing about it. The guy who previously had it didn’t have a long enough throttle cable. So he just kept it off right by the carburetor and literally reached behind on the engine and pulled the throttle cable by hand in order to go. 🤣😂. Luckily that’s a cheap fix. I picked up two throttle cables on Amazon for $16.

      The big score on this was the engine. The guy took it off a generator. I don’t think he realized how expensive the engine was. That is the perfect size for my bigger buggy go-kart. I was considering buying a GY6 for that, but now I don’t need to. This engine is almost double the HP of the Predator 212 it’ll be replacing. Not to mention this has electric start on it. So that’ll be very nice for me to add once I get it up and running. Then it’ll be easy to add the existing lights as well. I plan to hook it up like red beard does:


    • #23672
      123toid
      Keymaster

      I worked on the Go Kart I’m getting ready for my children. I have it all ready to mount the engine. I ended up having to cut off the old mounting plate. I bought one 1 in square tube by 36 in Long and cut it down to length. Now I have to weld it in place. Then weld on the mounting plate.

      The mounting plate is going to sit a little further back and you may notice that I can’t get the chain lined up with the sprocket and its current position. I’m going to have to end up ordering a little bit longer of a jack shaft and mounting the 35 sprocket where the nut is now. I’ll replace the 35 sprocket with a 40 sprocket near the engine. This will allow me to maintain spacing while also getting the chain where it needs to be. Let’s hope it all goes well. I’ve never welded before.


    • #23690
      tvor-ceasar
      Moderator

      Can’t wait to see how you progress through the welding. Remember, you don’t want “pigeon poop”, you want little waves lapping upon the shores of the 2 pieces. Move in tiny circles as you go along. And make sure you get good penetration. It is so satisfying when you run your first good bead, and a real joy when it becomes second nature.

      Be safe!


    • #24900
      123toid
      Keymaster

      This weekend, I spent some time with my kids fixing up the cheap go kart I bought. This needed a lot of work! It was completely missing a seat, the seat slides were completely rusted and no longer worked. The engine was entirely too big for it and some of the wheels had lost their bearings. Overall, it was a mess!

      So I let the kids go to town painting it and then we mounted a new seat, new slides, new throttle cable, fix the brake, installed 2 new tires and installed a new motor (I just took it from a different go-kart that I had). The way I had to mount the motor, I decided to run the 35 chain on the outside. In order to do this, had to buy a longer Jack shaft, but it all worked out in the end. I also ended up adding some seat belts, since there weren’t any on there. Tomorrow I’ll try to get some better pictures when it’s out and about. Hopefully we’ll try running it tomorrow. I’d love to say that this project went smoothly, but there were definitely some pretty big issues with it. One thing I still need to fix is warring in on off switch. Currently there isn’t one. Also I think the kids want to paint the wheels red. I want to first make sure it runs correctly before we start adding too much paint LOL.


    • #24916
      123toid
      Keymaster

      We ended up taking this out on Memorial day. It was a lot of fun. The one thing that is real nice is the predator engine has a screw adjustment for the governor. So if I screw it in further, the slower it’ll go. That makes this cart useful for the kids to drive, but also me. And I did drive it, a little. I got to say though, it’s really fast for the little predator engine. I’ll leave you guys with this quick before and after picture.


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