20" tires to big?

[weirdo4400]

mean to order 18s and got 20s... debating mounting them or sending back. Intek 6.5hp 206 with 30 series t/c and 60tooth axle... so 6:1 i beleive.

worried i wont be able to pull a hill XD kart is a yerf dog 3200

 

[weirdo4400]

P.s. tires are heavy 4 ply 20x9.5-8

https://www.amazon.com/dp/B07Z51DKTY?psc=1&ref=ppx_yo2_dt_b_product_details

 

[Denny]

It should be ok, but on the edge.

 

[karl]

Yeah it's not going to have great acceleration, but should work alright. I would recommend a 9t torque converter drive sprocket, that will compensate for the 2in taller tires, and make a much more enjoyable go kart, at the cost of 10-15 $

 

[weirdo4400]

Yeah it's not going to have great acceleration, but should work alright. I would recommend a 9t torque converter drive sprocket, that will compensate for the 2in taller tires, and make a much more enjoyable go kart, at the cost of 10-15 $

Any recommendation on where to find a 9t? Is it pretty straight forward to change out?

Also, from what I can find online I guess these 3200s came stock on 20s with a 6hp tecumseh. So I'd like to think the briggs intek 206 6.5 could turn 20s as good if not better than the stock engine. I've rebuilt the engine and added an animal engine cam to replace the plastic one I found in it.

The karts a rebuild of my childhood kart I had before I got a real license haha, been sitting probably 15 years but I remember it used to rip on the 18s... of course I've probably gained at least 50lb as I've sat 15 years as well hahaha

 

[weirdo4400]

Also if it helps at all old tires were exactly 18x8.5-8 turf savers. so knew ones are both taller and wider and thicker

 

[Denny]

Sprocket should be easy to change. You should be able to find an 8 or 9 tooth sprocket anywhere kart parts are sold on line.

 

[karl]

Yeah it should be a relatively easy swap. Same as assembling the TC unit , just reverse then forward

You are spot on, the kart manufacture's usually gear the kart for a sub 120lb kid.
Once you add an american adult butt to the seat, you'd wish the gear ratio was steeper.

Also where you ride matters, as you are right now, the kart will hit top speed on flat pavement,
once it hits grass that won't happen.

Many places carry such sprocket, take your pick.

https://www.bmikarts.com/TAV-Replacement-Sprocket-58-Bore-C-Type_p_1421.html

https://www.gopowersports.com/9t-5-8b-41p-sprocket/

9 Tooth 40 41 420 Chain 5/8" Bore "C" Sprocket

OMB Warehouse - Go Kart Parts and Mini Bike Parts. OEM and Aftermarket supplier of Outdoor Power Equipment Parts, Arborist and Landscape Supplies.

www.ombwarehouse.com

 

[weirdo4400]

So I guess the consensus is then, run the 20s not return them for the 18s. And then lower the gearing back down at the jack-shaft sprocket if need be? Gotcha

 

[karl]

You got it!

 

[weirdo4400]

Thanks for the feedback, I appreciate it. You too, Denny.

 

[FabnOkie]

i ran 22" rear tires on my daughters kart originally. it had a briggs 5hp, tav30, 9t and 60t. it was fine. should work nicely with 20's

 

[weirdo4400]

i ran 22" rear tires on my daughters kart originally. it had a briggs 5hp, tav30, 9t and 60t. it was fine. should work nicely with 20's

Did it pull you well as an adult rider too even? Thanks for the feedback!

 

[FabnOkie]

Did it pull you well as an adult rider too even? Thanks for the feedback!

yes it was decent with me on it, but it was better with her 80lbs lol

 

[weirdo4400]

yes it was decent with me on it, but it was better with her 80lbs lol

I guess decent was what I was expecting there. I'm roughly 160-170... would like it to pull my old man around too though, since it will be at his farm... I'd say he has a hundred lbs on me guesstimating

 

[FabnOkie]

I guess decent was what I was expecting there. I'm roughly 160-170... would like it to pull my old man around too though, since it will be at his farm... I'd say he has a hundred lbs on me guesstimating

if i was guessing, it would do about 20mph with me/300lb on it, but seemed to have good torque. so as long as he isnt looking for blistering speed he should be fine.