Originally Posted by
maddog34
the shear load capacity of a 5mm bolt is a bit below one metric ton... an aluminum bike rack is rated to about, what, 50 Pounds? :-D
Yebbut /fatigue/ ... the fact that you'll have to overcome half a ton of clamping force before you stress cycle the fastener is easily overlooked.
Originally Posted by
maddog34
i'd suggest custom grinding or filing a standoff out of a tall V-brake pivoting base(the taller aluminum part, they come in two thicknesses), but then you characters couldn't rack up another 85 posts discussing this simple fix.
I keep a few pieces of round bar in brass and aluminium for making spacers - I can have the spacer made in less time than it would take me to scratch around for something to improvise with.