Main Steering Shaft Failure

Technical and Repair Discussions

Forum Hermit
Forum Hermit
Posts: 155
Joined: Tue Dec 06, 2011 12:26 pm
PostPosted: Thu Jul 26, 2018 7:02 am
When manufacturing shafts with holes that see torque loads the holes should be reamed after drilling, on aircraft they are often honed after reaming. Any ridges left by a drill bit cause stress risers leading to the formation of cracks.

The process used to make our shafts probably has varied over the years.

Still not a very expensive but critical part worth considering replacing.
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