UK Karting - Notice Board (General Karting) : Re: Solid Vs Hollow axles

Notice Board (General Karting)

Re: Solid Vs Hollow axles
Posted by 'SimonS' on 26 Oct 2008 @ 09:52

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SimonSJoined: December 2004
Total Posts: 4
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"The hollow axles are a little weaker than solid,"

It is however only a little weaker. Providing the walls of the structure are strong enough to resist buckling, there's little real gain to be found in 'solidity'. So one has an "H" shaped girder rather than a solid beam or a tube rather than a bar.

However the rigidity of the structure also acts against its flexibility, it's a lot more difficult to flex a 50mm steel tube than an equivalent bar. The walls of the tube wrinkle on the inside of the bend where the metal 'inside' the bar stops the side wrinkling. The bar flexes and return to the straight, while a tube stays bent.

So I suspect that the solid axle has more to do with returning to shape after an impact (wheel against kerb for example) than it has to do with 'putting a twist in the axle' from the power of acceleration.

If it wasn't illegal, the best thing to do would be to put a mesh of a composite fibre inside the axle tube, a technique used in expensive racing cycles and golf clubs, which combines a high stiffness and elasticity with the ductility of steel. On its own the composite fibre can shatter, the steel bends before it breaks, the result is a non-catastrophic failure.

Message Thread:

Solid Vs Hollow axles by 'Attack2001' (25 Oct 2008 @ 20:06)

Re: Solid Vs Hollow axles by 'michaelg36' (25 Oct 2008 @ 20:08)

Re: Solid Vs Hollow axles by 'lambstales' (25 Oct 2008 @ 22:05)

Re: Solid Vs Hollow axles by 'SimonS' << You are here!

Re: Solid Vs Hollow axles by 'Attack2001' (26 Oct 2008 @ 13:28)

Re: Solid Vs Hollow axles by 'KevinW' (26 Oct 2008 @ 13:41)

Re: Solid Vs Hollow axles by 'Attack2001' (26 Oct 2008 @ 13:42)

Re: Solid Vs Hollow axles by 'KevinW' (26 Oct 2008 @ 16:12)

none of these motors will develop enough .. by 'Chad' (27 Oct 2008 @ 2:09)

Re: Solid Vs Hollow axles by 'SMoss31' (26 Oct 2008 @ 20:29)

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