What axle shall i get?

[ibrahim123]

First my rims are 8'' and i would like to know what is the reccomended length for an axle or does the depend on how wide the frame of the kart is. Also what should the thickness be so that it does not bend?

 

[ibrahim123]

One more thing, will i be able to get any disk brake or the disk that will spin the wheels matching any thickness type of axle?

 

[ibrahim123]

Firstly i am making the kart.

Here are the pics i have atm of my kart.
















the rims are 8 inches diameter.