Trevor,
The bars, IMHO, will experience their greatest amount of stress when braking, HARD.
No other activity will put as much strain on them (except if they are used as tie-down
points when transporting the bike). By background, I have structural engineering
experience and ability, which means that I can run all sorts of calculations to
determine what the minimal wall thickness needs to be, but, it's safe to say that the
OEM wall thickness would be the safest way to go. And keep in mind that the wider the
bars, the greater the stress the bars will experience. Good Luck!
Randy
VMOA #667
'94 stock/corbin
Ps. Don't even think of filling them, it won't work unless the fill material (a steel
rod or tube, NOT conrete or epoxy) can be bonded or welded to the outer sleeve in
order to make the two work together. Too much work, IMHO.
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