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Hi Ed,
I came to aviation after racing motorcycles for many years. In the early mototrcycle days I had stuff falling off the bike (actually, just getting loose) until I discovered thread lockers (I was only a kid in those early years(grin)). Well, now that I have seen the light and discovered safety wire (I'm not sure its 'better' though) please educate me further - How is safety wiring the head of a bolt going to keep the nuts from falling off? Why not drill the aft end of the bolt (on the backside of the nut) for a small cotter pin?
Thanks, Ken Powell
-------------- Original message --------------
> Paul, if you have all metal type (NOT NYLON Inserts) lock-nuts for the
> bolts and a crush plate with a recess that the heads of the bolts will seat
> into preventing them from turning, then it is not necessary to safety
> wire the bolts. That is the way I flew my Ross drive and my current RD-1C
> drive. However, You must use all metal type lock-nuts!
>
> If you do want the safety wire then I suggest get the drilled head type
> bolts. Drilling the shank can weaken the bolt especially if you have a bit
> of torque to apply.
>
> FWIW
>
> Ed
>
> Ed Anderson
> RV-6A N494BW Rotary Powered
> Matthews, NC
> ----- Original Message -----
> From: "paul"
> To: "Rotary motors in aircraft"
> Sent: Sunday, September 05, 2004 9:13 AM
> Subject: [FlyRotary] safety wiring Ross prop bolts
>
>
> > 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
> >
>
>
>
> >> Homepage: http://www.flyrotary.com/
> >> Archive: http://lancaironline.net/lists/flyrotary/List.html
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