Hypothetical situation:

If one drills two holes in a straight section of a locost chassis, would the loss in strength be recovered by bolting another section of RHS to it through the holes?

I don't quite see what you mean, but welding a tube inside the holes would restore much of the strength, and prevent any crush if you are bolting through

quote:

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Originally posted by Mark Allanson
I don't quite see what you mean, but welding a tube inside the holes would restore much of the strength, and prevent any crush if you are bolting through

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A better solution would be to weld a bracket to the chassis , and bolt the frame to that .
I NEVER drill through a chassis tube just to bolt something on

Yes, alway weld brackets to chassis members, never drill.

quote:

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Originally posted by clairetoo
A better solution would be to weld a bracket to the chassis , and bolt the frame to that .
I NEVER drill through a chassis tube just to bolt something on

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Depends which tube youre drilling.

If you drill into the flat side of a tube under compression then it wont make a great deal of difference id say. You need to consider the additional forces at accelleration, cornering and braking though, as this compression force might change in different circumstances.

If you were to bush the hole that youve drilled, then thats the proper way of doing it. Drill the hole bigger and weld a bush into it.

Looks like i have some welding to do this afternoon then

Cheers guys (and girls)