Thread: Dual 7" Servo
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Old 10th January 2012, 17:24
Mike Mike is offline
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Default Stainless stress

I think stainless would have been ok!!!!!!!!!!!!!!!!!

Based on these figures an M8 bolt, which has a cross section width conservatively of 7mm, has a radius of 3.5mm, and therefore a cross sectional area of 36.75mm2. So, at 700N/mm2 = 25.7kN = 4,250lbs per bolt, it would take in excess of 3.5 TONS of force for the bolts to fail.

Anyone got a right foot that heavy!

May be this is a little flippant, as the failure is likely to be stripping the threads, rather than on the cross section failing?
Anyone any ideas how to calculate that?

Mike



Quote:
Originally Posted by Grey V8 Pete View Post
Have found the following website giving some insight into the Stainless Steel vs Mild Steel strength issue.

http://www.volksbolts.com/faq/basics.htm

Peter.
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