Need gearing advice

[john_doe_318]

Im looking for a lil bit of help on my gearing on my kart its no more than 140 pounds and I'm 230 i have hf 212 motor and 20 inch rear tires 54t sprocket and really gonna be riding on the street and a lil off road nothing major so i was thinking about getting a tc tav2 10t would this work and how could i calculate the speed i would get if not what would be a better setup for the frame and motor i have.really need help guys

 

[OzFab]

For starters, a 54t sprocket is waaaay too small with 20" tyres.

Go for the tav2 but your axle sprocket should be somewhere around 80t.

To figure out your top speed, punch some numbers into this

 

[john_doe_318]

For starters, a 54t sprocket is waaaay too small with 20" tyres.

Go for the tav2 but your axle sprocket should be somewhere around 80t.

To figure out your top speed, punch some numbers into this

Ok so if i get the tav2 10t and a 80t sprocket will it be alright to ride or wat about a 72t sprocket

 

[mckutzy]

I doubt you will find a 80 tooth sprocket, I think most they get is 72.
EDIT....Unless you want it in #25 chain....

 

[john_doe_318]

I doubt you will find a 80 tooth sprocket, I think most they get is 72.
EDIT....Unless you want it in #25 chain....

That's wat i was looking for i found 1 but it was 90 bucks could i drop the sprocket to a 80t #35 and the tav2 for it its only 45 for the 80t sprocket for 35 chain

 

[john_doe_318]

Gold all on my frame

The guy painted it so tacky

 

[john_doe_318]

Please guys any advice wpuld help

 

[OzFab]

could i drop the sprocket to a 80t #35 and the tav2 for it its only 45 for the 80t sprocket for 35 chain

By that comment, I assume you're currently using #41 chain: The problem with switching to #35 is you'll then need to get a #35 sprocket for the driven which will probably be a minimum of 12t, bringing your ratio back to 6.6:1...

 

[john_doe_318]

Ok i jus found a problem. on the rear tires where the lug nut or watever is there is not a nut it is welded to the axel.i got one tire off and i will have to grind a bit of axel and rim off to get the other off so i now need another axel. Is this hard to replace and how do i find out which one buy https://www.bmikarts.com/mobile/1-Steel-Live-Axle_p_517.html

 

[modestmouse]

hey i was wondering what a good gear ratio would be for a off road kart with 13 inch tires in the back and 14 inch front tires the engine is a 212 predator. also i was thinking of using this torque converter 30 Series Driven Unit, 5/8" Bore, 6" Diameter at http://www.mfgsupply.com is this any good?

 

[landuse]

7:1 should be fine. Maybe 8:1

 

[john_doe_318]

hey i was wondering what a good gear ratio would be for a off road kart with 13 inch tires in the back and 14 inch front tires the engine is a 212 predator. also i was thinking of using this torque converter 30 Series Driven Unit, 5/8" Bore, 6" Diameter at http://www.mfgsupply.com is this any good?

13 on the back 14 on the front