[Kartbuilding] Axles

Stephen Burke sburke at burkesys.com
Tue Oct 7 23:49:56 IST 2008

Hi Francisco,

The reason why some karts would have two rear axles, is because this would 
allow one rear wheel to be driven and one to spin freely.
With a single solid live rear axle (where both rear wheels are attached to 
the one spining axle) cornering can be very difficult. As there is no 
differential, when cornering, the outside wheel must go faster than the 
inside. As a result the inside rear wheel must slip in order for the kart 
to go around the corner.

One solution is to use a differential:

Another solution is to have two rear axles, and allow one rear wheel to 
spin freely/independently from the other.

For racing karts the most common solution is just to attach both rear 
wheels to the one live axle, and with the chassis and steering setup allow 
the chassis to flex allowing the inside rear wheel to slip when cornering.

I hope this helps answer your question.

Best of luck,

On Sun, 28 Sep 2008, Francisco Cary wrote:

> Hi!
> Could you explain me why some chassis have two rear axles?..one for each wheel?
> Thank you
> francisco

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