Really Need some help here and suggestions

[Reehar]

Hey guys, I am new to kart building but am very hands on and mechanical. Anyways I have ran into a slight problem. So heres the story. I pulled a 10 hp B&S engine of a generator. 7/8” diameter shaft. I bought a 40 series TC on ebay (the $230 one) and a 7/8” to 1” shaft adapter. I am going to the machine guy tomorrow to get a quote on getting a keyway cut in the shaft. Now heres my problem, this setup is massive. The TC basically hangs over the wheels and I have to raise the engine about 5 inches above where the original engine mount was. I will include pictures if I can to make it all make sense. I am running a 60 tooth and then a 12 tooth on the TC. I am worried if the 11in diameter wheels will be able to hold this setup. And if its even worth at this point to continue or just buy a 212cc. I want it to work and we are so close but what I am asking is if it will work in reality and if it will go as fast as I am expecting it to go. We have access to lots of tools and everything. (Yes I know its mounted on concrete slabs and yes I know the clutch is backwards but thats the only way it will align and others haven't seemed to have a problem).

 

[mckutzy]

Hello and welcome...

You have started at kinda awkward position, with a big tapered shaft engine, and spent a chunk of change for the TC... then thinking about the 212 for $100......
Now by all means dont take this the wrong way... just pointing out...

To make things work....The ratio is fine with that tire size.... A better means to save money would be thinking about getting a cheaper TC or decent clutch is fine, and buy a Pred, with the sale of that TC you have...you can also put some of that towards brakes.....

Set the Geny motor aside and think on that for another day.... Keep an eye out for a compatible 1" crankshaft that will fit, in the mean time.... Or could sell that too....

Well get you worked out for something thatll work nice...Just hang in there...

 

[Dingocat]

looks like a bearing on that wheel. 10 hp one wheel peel?

 

[Hellion]

Sure looks like it, Dingocat. Imagine the burnout potential! When all is said and done, that one tire is gonna be bald in short order.

Giant engine on that tiny kart I see lots of fabrication in your future.

Be sure to tell all your friends, when in doubt: come to DIY first.

 

[Reehar]

Thanks for the replies guys. So much help. I decided to return that TC and pick up a pred. Also what are yalls thoughts on the $70 TC on ebay or amazon? Don’t really want a comet at the moment. How are the preds too? Pretty good power when you have the ratios right?

 

[Hellion]

Lowest cost for a knockoff Chinesium TC is at $50.01 on fleabay. I think most people upgrade to genuine Comet belts though.

I’m a clutch guy though on small karts like that because TCs create parasitic drag and limit your top end...plus they're bulky, plus I'm cheap.

 

[Reehar]

Im really looking for a cart that can get off the line quickly. Always thought the TC helped with that?

 

[Dingocat]

Even with a tc, if that kart IS a one wheel peel then you're going to be doing a lot of burnouts. But if it is a live axle I'd go for torque converter. It also depends on where you're going to drive it. Lots of stopping and starting isn't good for clutches because they will be spending most of the time slipping. I prefer torque converters because most of my riding is offroad and I like spinning tires.

 

[Hellion]

3D Manual Clutch:

https://www.youtube.com/watch?v=O-CdW48qIoo

 

[Reehar]

So should I still be using a TC if its a one wheel peel?

---------- Post added at 11:16 PM ---------- Previous post was at 11:15 PM ----------

I don’t plan on off-roading. Just the pavement

 

[Hellion]

Try both! I think you can afford both and the clutch is the cheaper option. There's some 3/4" bore clutches for under $16 on that popular auction site....


Wait, what am I thinking. The TC is the item that's gonna give you a better off the line speed....but it still contains a centrifugal clutch. It's not perfect.

 

[Reehar]

Just bought a cheap TC off amazon $60. Going to get a pred tomorrow so I will keep you guys updated. Another other tips on how i can get this thing off the line faster?

 

[landuse]

Just bought a cheap TC off amazon $60. Going to get a pred tomorrow so I will keep you guys updated. Another other tips on how i can get this thing off the line faster?

Getting off the line faster would mean lower gearing to give you more torque. That would rob you of top speed though, so it is a trade off.

Generally, a TC isn't such a great idea on a 1 wheel peel. They are used more on live axle karts.

I would get the predator, get the generic 30 series but with a genuine comet belt (Chinese ones are rubbish), and just see what happens. You could also get a CC as well and test it out too. CC are used on racing karts because they can lock up fully and utilise the full potential of the engine. With a TC there is always some slippage and loss of power

 

[Hellion]

Make sure you have the $99.99 coupon for the Predator or you’ll kick yourself.
Regular price is $119.99

Look for Predator stock #60363, it’s the one with the hemi (hemispherical combustion chamber). Otherwise the other one has more of a ‘bathtub’ chamber.

Landuse is absolutely right. Frankly I’m not sure why you’re so obsessed with absolute off the line speed. Maybe too many Fast and Furious movies....

 

[Reehar]

Haha very funny Hellion! Yeah we are going to see how the TC works

 

[Reehar]

What do you guys think about this. I just went and bought the predator. Now, should I take the governor off while theres no oil in there at the moment or leave it be? https://www.amazon.com/TORQUE-CONVERTER-CLUTCH-COMET-218353A/dp/B010TQ3VU0
Theres the TC i ordered

 

[Hellion]

Sure, why not. Take off the side-cover and make sure there’s no metal shavings in there, i.e., manufacturing ‘residue’ from the assembly line where they drilled and milled the block.

While you’re in there, do a governor delete and remove the low oil sensor then plug the holes for both while you’re at it.


OR run it first with the governor intact; break it in, ride your kart a while then drain your break-in oil. Open up the block and delete the governor (etc) after you drain the old oil out. Then you will have a baseline for comparison—governed versus ungoverned.

EDIT: There is a bit of oil in the crankcase added by the factory, just a few ounces (a shot glass worth) so be wary of that if you open the engine first thing. Prop the engine up so the PTO shaft is at an upwards angle when you pull the side-cover off so the oil doesn’t drain all over your workbench...

 

[JTSpeedDemon]

I would suggest keeping it bone stock until the return period runs out, since sometimes there are bum engines.
You are dealing with a Chinese product.
But of course, I understand that some people take the speed route to speed.

 

[Reehar]

Ok ill probably break it in first. You guys think the TC I bought can hold up to the ungoverned engine?

 

[950speed]

I bet it would, but get good quality belts, unless you enjoy shredding them constantly