Go kart questions and trouble shooting So I took the engine

Lol idk. I don't know anything about engines.

Probably pressed on
Need a huge puller or just angle grind it off

>>1198183
If I was Dr. WHO I'd use alot of WD40 and my sonic screw driver.
But sound, constant pressure, & WD40 might work.

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>>1198183
Generators are bad donor motors for karts. They use a tapered shaft and you need a straight keyed shaft. You can replace the shaft but then you're disassembling the whole damn thing and might as well have started with the right motor to begin with.

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Here's part of the frame,

>>1198248
And thanks, that's the information I was looking for. That's what I was worried about, that it might have some kind of different shaft of some kind. I'm not too worried about taking the engine apart though, I planned on having to do it anyways. Well see how it goes. If all else fails, I'll just pick up a predator instead. I only spent 25 on this engine anyways.

>>1198183
>The engine itself runs great,
>>1198343
>taking the engine apart though, I planned on having to do it anyways

engine runs great but you want to take it apart
you shoulda fixed the generator - then you'd have something useful

>>1198349
>you shoulda fixed the generator - then you'd have something useful
judging by the shattered frame still around the rotor that wasn't ever going to happen

>>1198343
you should be able to use a torch to heat the sleeve and pop it off

you could chop off the sleeve on the rotor section and put a pulley on that

>>1198349
I intended on taking it apart to do a few mods on the engine to get a little more hp. So far I'm planning on getting a new carburetor, and then throwing the little nitrous kit onto it too.
>>1198408

Thanks, I'll try using a torch on it next chance I have to work on it. And you're right about fixing the generator, the guy before me had already tried to fix it, and in the process had cut apart and torn out so many different wires I wasn't worried about even trying.

The whole premise behind this was a competition budget build, with 350 being for materials. That's why I was so eager to pick up this engine. My friend plans on just buying a new predator, which locally is about 119 from harbor freight. I figured with the money I saved I'd just dump it back into upgrading the engine.

My initial plan was to go with a reverse trike, and on Monday I plan on going to a local golf cart garage and picking up some wheels and possibly suspension.

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Also, a side note, after searching around I've kind of come to the conclusion there is no readily available transmission for this size engine. If possible I would love to make it a shifter kart. But I can't really find anything like that for the size engine I'm working with. We were throwing around the idea of pulling a lawnmower transmission, but I'm not sure if it's even possible. Are there any potential ways I could do this? Short of creating a transmission from scratch. If nothing else will likely just go with a plain torque converter.

>Google remove generator shaft
>First result

https://www.youtube.com/watch?v=RsNJLd7j0Yk

>>1198978
Oh, well shoot my bad. The only issue though is I don't have a tapping set. Although I've had my eye on craigslist for awhile now looking for one.

>>1198807
>If nothing else will likely just go with a plain torque converter.
aka a CVT.

Just do that. The only thing you have to match are the bolt pattern on the side of the engine, and the shaft size of its output.

Otherwise they will work with almost any engine that's below 9HP. Anything above that and you would have to look into snowmobile transmissions, which are the same thing just larger.

>>1199346
This will more than likely be what I end up doing. But I'm curious about golf kart transmissions too. As I said before, I'm going to a gold kart garage tomorrow, and I was crossing my fingers they'd have an old gas powered one laying around for parts. If that's the case I was hoping I'd be able to just use the transmission out of that, or is this just not going to work?

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Hey guys, I'm back. So I recently made a trip to a nearby golf kart garage where I picked up the suspension you see in the front, and the three wheels, got them all for 90 bucks. My question was how I should go about mounting the suspension onto the frame. I know I'll have to weld some brackets to mount the shocks, but what about the leaf spring section? My first idea was to just weld it but I realize now that might not be the best idea. There one central bolt in the center of it, and I know I could always just bolt that but it would pivot I'm sure. I'm just trying to make sure I don't limit the leaf spring by how I attach it to the frame. Thanks

>>1198183
I'm going to post my question in here because I dont want to litter with a separate thread.

Since English is not my first language I have a hard time working this in google.
How is it called when you use gears to make something move that would otherwise be to heavy to move?

>>1200409
"Gear reduction" may point you in the right direction.

>>1199718
Since its a small engine, test out my idea of a bike derailleur on it for a cheapo gearbox for me.

>>1200409

maybe you're looking for this.
''Mechanical advantage'' is a measure of the force amplification achieved by using a tool, mechanical device or machine system. The device preserves the input power and simply trades off forces against movement to obtain a desired amplification in the output force.

>>1200454
>>1200467
I'll search on those terms, thanks.

>>1200409
See
>>1200467
This is exactly it

>>1200454
leverage

>>1200493
>use gears

>>1200409
>How is it called when you use gears to make something move that would otherwise be to heavy to move?
Mechanical advantage is the general term, whether you're using gears, pulleys, a lever, a cam, a wedge, a screw or an inclined plane.

OP have you considered a snowblower clutch? It's just a loose belt around two pulleys with a 3rd one on an arm you move. Pull the lever and it pushes a tensioner pulley against the belt. Cheap and easy.

>>1200587
I wouldn't mind using those after looking into it, but sadly, I'm no longer in an area where snow is an issue, South carolina, so the snowblower market is very slim. But thanks for the suggestion.
>>1200459
Im.gonna look more I to that, but the fact that this isn't like, a more common idea makes me feel like something might make that a bad idea. Mainly.because the diy go kart community is so large, I feel like someone(particularly with more skill than me) else would have tried it, but honestly, I don't see why it wouldn't work. Will update if we come up with anything

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>>1200459
Well, drew up a design that I thought might have worked but buddy found this in a forum. Take it as you will, but we're probably both gonna stick to cvt

>>1200907
They're also on alot of farm equipment and lawnmowers. Easy to fashion. Looks like this:

http://manuals.deere.com/cceomview/OMM137000_G8/Output/images/OMM137000_G876.jpg

>>1200955
Appreciated. I'll look into building a three-speed based on a Lego model and off the shelf gears and shafts instead.

>>1200998
Then again, I will be using a 55cc from a moped kit. If those can use jackshafts to utilize the existing rear derailleur then I should be able to get away with it. Craigslist bikes are free/cheap.

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Update, working on some steering wheel, Buddy is currently welding his own.

>>1201002
I'm certainly no expert, but that doesn't seem like it'd be an issue with that small of an engine. Update with what you come up with

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Update, front suspension

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>>1201968
>those welds

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>>1202044
calling 'those' welds

>>1202044
>>1202046
I'm not gonna try and defend them. It was my first time using a Flux core welder. My welds have since gotten better.

>>1202190
>learning how to weld while building the front suspension of a vehicle
RIP

>>1202190
You probably shouldn't even have welded the leaf spring.
An upside-down U welded to the frame to keep the spring from pivoting and a #8 grade bolt to hold the spring in place.

>>1201968
What steering geometry is that? Is that curved bar on the bottom the spring? It's interesting, but I'd have gone with double wishbone and a spring in the middle. Also 3-wheelers with 2 at the front are my thing. Gonna have a chain to the back wheel?

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>>1202197
>An upside-down U welded to the frame to keep the spring from pivoting and a #8 grade bolt to hold the spring in place.

8 hours in paint...

>>1202197
Oh, that would have been helpful when I poster this:
>>1200393
I was worried that the constant flexing would eventually brake the weld. Talked to buddy and he said, "nah, should be fine" so I decided to weld it.
I figure if I see any signs of wear or cracking, I'm just gonna cutting through the weld and do like you said, (although I'm worried about losing the temper on the leaf spring, although I probably fucked it up by "welding" it anyways)

>>1202200
Well, from my understanding the curved bar on the bottom is a leaf spring, and on top of the spindles there's a place to mount the coil shocks. I just haven't purchased them yet.

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Oh, another update, I received the keyed crankshaft I ordered online, and I plan on swapping it out sometime in the next few days hopefully.

>>1198343
>>1200393
>>1201968
those welds are dangerous. you're going to load the suspension at speed and it's going to fall apart. likely end up impaling yourself in the process.

make sure the go pro is mounted forward facing in the back so you can upload it to youtube for us/posterity.

>>1201968
RIP OP

Have you given any thought to what engine you're going to put in it? I'm resisting the urge to go all "V-8!! V-8!!"

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>>1202226

Clearly you have never welded a race car frame. I work for Richard Childress racing and when we mock up a frame it looks like this. The final welds will be pristine like cooling tubes on a nuclear reactor.

Have faith in OP.

>>1202258
The engine I have for it is a little 196cc gx200 clone.
>>1202266
And thanks, I'm sure they don't look quite so bad, but I rest assured everyone once I have the entirety of the frame put together, I'm going to go back over all my welds to make sure they're all good. Unless I do the other idea for the front suspension. Although if I do die, plan on having seeing the video link on here the same day

>>1202215
>when I poster this: >>1200393

The spring looks like it had been welded previously.
You're probably OK with it as-is.
I just wouldn't have given it further abuse by more welding.
Leave it as it is unless it breaks.

>>1200393
that leaf spring has never been welded your telling me youve never seen how a leaf spring attaches to an axle on a truck? same idea
>>1201968
theres so much wrong here its not funny your welds are terrible why not practice on some scrap first? and you fucked the leaf by putting heat into like that its going to crack its high carbon and everything there is so far out of square its not going to drive remotely straight and cause terrible wear on your tires
>>1202266
obvious troll is obvious
>>1202326
when it breaks its going to be under load as in driving and going to fuck up everything else

Guys.
It's a go-kart.
You can make them out of PVC pipe.

>>1201185
>welding in a t-shirt and sweatpants

At least he's not wearing flip-flops

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>>1202352
>that leaf spring has never been welded