Paul
Here is the back of the motor.
Tony
We got it Tony and sent it out.
Best put a dash between words in file names.
Not all programs can handle just spaces.
Paul Lamar
Paul
O.K. but I have been sending you pics for 8 months now and it has never been
a problem what has changed?
Tony
Some people don't get them with spaces in the name
on older PC's so I frequently have to rename them. I don't complain
so you don't hear about it.
Paul Lamar
People are saying it but, pictures help.
--
Blake C. Lewis
Tony and all,
I also have been told by my A&P to safety wire bolts together in sets of two
as the more reliable way of doing it.
Question: What is accomplished by safety wiring the engine block bolts? The
failure mode of those bolts would probably not be loosening but snapping
under thermal expansion stress cycles. Wouldn't it be wiser to be able to
notice if a bolt is protruding or loosely rotating during preflight?
Doug Fir
Good idea on the pre flight Doug.
It is not thermal expansion stress cycles that do them in.
It is running the engine at high power at one RPM
that causes them to vibrate in their natural resonant
frequency bending mode like a violin string.
When they break they break at the root of the threaded
end where there is a built in stress riser.
The safety wire will hold the broken bolt in the housings
preventing it from working out and interfering with
the Drive Plate. Here is what happens to the broken
bolt if it works its way out. This one was struck by
a flywheel and not a Drive Plate.
--
Paul Lamar ...No rotor no motor.
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