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Message-ID: <413B2250.70402@bellsouth.net>
Date: Sun, 05 Sep 2004 09:27:28 -0500
From: Charlie England <ceengland@bellsouth.net>
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To: Rotary motors in aircraft <flyrotary@lancaironline.net>
Subject: Re: [FlyRotary] safety wiring Ross prop bolts
References: <list-393847@logan.com>
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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