Wheels

[fluxcored]

Front/Rear: Knobby: 145 x 7 x 6" / 18 x 9.5 x 8"

Is this a good set of wheels for a kiddies 3.5 HP size kart? Will the speed be acceptable - a comfortable jogging pace or do you'se reckon it'll be slowww!

Maybe a bit too big but I plan to change the motor to 150CC when he gets comfortable handling the kart.

 

[Kenny_McCormic]

You cant run over a 15 without gearing it to go 10 or using a TAV.

 

[fluxcored]

You cant run over a 15 without gearing it to go 10 or using a TAV.

Kenny, I hate to admit but I do'nt understand what you're saying - I really know too little.

Will you please be so kind as to expand on that.

 

[Kenny_McCormic]

Tires over 15 inches are not recommended for clutch setups they cause the gearing to be too high and slipping/burnt clutch will happen.

 

[fluxcored]

Kenny, what optimal size tyre and rim would you recommend for front and back for a 3.5HP motor sized kart?

I really appreciate your input and thanx.

 

[2or3wheels]

actually it doesnt matter, if you gear it down more. you could run some 66" tractor tires if you geared it down enough.

 

[Kenny_McCormic]

Yea but it would go 5mph with tires that big. A single seat light weight yard cart doesnt need much for tires, the balder the better, MORE FUN! IDK how fast it will go without knowing your gearing. http://www.diygokarts.com/speed-calculator.html

 

[AlphaRunner85]

I measured the bolt hole ring on my wheels and it was like 3 3/8"
is that normal???

 

[Kenny_McCormic]

Bolt patterns are measured in MM, look up how ot measure bolt patterns on google. I dont think a 3.5 will push a live axle good enough to make it handle very well if at all.

 

[fluxcored]

I'm quite flexible regarding gearing - I think I have a 12 tooth gear on the clutch. Will check tonight.

 

[modelengineer]

"I dont think a 3.5 will push a live axle good enough to make it handle very well if at all"

My live axle has a 3.5 2-stroke and it does AWESOME powerslides at around 40kph... But that may be because I have a manual clutch and can unhook the backend whenever. Just dip the clutch with throttle down and you slide all over the place!

 

[Kenny_McCormic]

"I dont think a 3.5 will push a live axle good enough to make it handle very well if at all"

My live axle has a 3.5 2-stroke and it does AWESOME powerslides at around 40kph... But that may be because I have a manual clutch and can unhook the backend whenever. Just dip the clutch with throttle down and you slide all over the place!

We are talking 4 stroke auto here.

 

[fluxcored]

Ja, I do'nt think it'll be that powerful. My clutch has got 10 teeth - I still need to figure what to put on the drive wheel and I'll definitely go single wheel drive.

I'm going for wheel barrow or cheaper wheels - a rat build look. I have to save money for another project which I want to attempt after this is done.

Thanks all and especially you Kenny.

 

[modelengineer]

I'm going for wheel barrow or cheaper wheels - a rat build look. I have to save money for another project which I want to attempt after this is done.

You might think you will save money, but I have barrow wheels on my kart and after 3 days of around 4 hours a day both back tyres were worn bald and one popped.

 

[fluxcored]

I'll decide within the next few days what I'm gonna do about the wheels. Andrew, I'm afraid that you've got a good point there.