10 tooth clutch vs 12 tooth clutch

[GOKILL]

Hi,

After much searching on a subject that I'm sure has been covered a million times.(with no luck)

10 tooth clutch vs 12 tooth clutch

I have a old 1 seater thunder kart that came with a 10t clutch. The thing would literally come unglued on our rock roads with just a tap of the gas pedal after I replaced the motor with a HF 6.5hp.

Well while trying to resurrect an old murry 2 seater with the stripped gear, jack shaft removed, I burnt the clutch. Wont try that again!!!!

So I'm hunting a replacement and was wondering the difference as the one I have (10t) seems to be a bit hard to find in a 35 chain and I hate to change a setup that worked really well. The 10t was awesome for this little kart. I mean we were drifting this thing around turns like crazy. Rocks flying everywhere.:arf:

If my logic is correct the 12t would make things better cause it will get more revolutions per turn then the 10t or am I just a moron?

Thanks!

 

[Kaptain Krunch]

12t will add a little top speed and take away a little acceleration. What size tires and axle sprocket do you have?

 

[GOKILL]

Thx for the quick reply KK. I've read many of your helpful replies.

It's one of those single wheel setups with about 60 teeth. The tires are kinda odd, 145/70/6. They are like 12" tall mudd grips.

I think I'm leaning towards the 10 teeth if I understand you correctly. I/we just love the radical takeoffs. Besides I dont need my son flying down gravel roads to fast. I was getting 29mph (gps checked) with the old 10t clutch so why fix it if it aint broke...ya know..

how do i find this speed calculator I've heard discussed? just math right??
thx

 

[Kaptain Krunch]

speed calculator is here.

 

[GOKILL]

thx KK, I must be blind.

Now I know why this hasn't been covered much.

After further looking it seems like the chain dictates how many teeth will be on the clutch. I could only find 10t clutches in #40-41 chain without looking at the high dollar stuff.

I did find a used barstool contraption clutch with 18t. The speed cal says I would get 72mph with my setup. Yeah If I get a pull from a truck for take-off... I'll stick to 10t

Think I got lucky, found 2 new max torque clutches 10t/40-41 on egay for 23 bucks each? Well see if even 1 arrives...lol
thx