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paul wrote:
Hi all....On a typical aircraft prop installtion, the heads of the prop
bolts are drilled and then safety wired. This works, because the prop flange
has fixed threaded sleeves into which the prop bolts fasten. On my Ross
PSRU, there are thru-bolts, and instead of the bolts being threaded into a
fixed unit, they go through the crush plate on the engine side of the prop
and have locknuts instead. What might be the best method of securing these
type of prop bolts? Unfortunately, I have seen a few other rotary
installations with a Ross redrive, but never bothered to look to see if the
prop bolts had safety wire, etc. Thanks for any and all suggestions. Paul
Conner, 13b powered SQ2000 transporting to the airport today.
Homepage: http://www.flyrotary.com/
Archive: http://lancaironline.net/lists/flyrotary/List.html
This is common on RV-x's, etc using 'spool' type prop extensions. Nylon insert locknuts are adequate. Usually there is a machined aluminum crush plate with a groove that captures the head of the bolt; if you have a smooth crush plate you can safety wire the heads if it makes you more comfortable. (If you're using a wood prop, don't forget the retorque routine as you test run & do 1st flights.) Give me a call if that description doesn't make sense.
Congrats on your move to the airport!
Charlie
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