----- Original Message -----
Sent: Sunday, September 05, 2004 2:34
PM
Subject: [FlyRotary] Re: safety wiring
Ross prop bolts
Well, Ken it depends on which way Paul sticks the
bolts through. If he has a crush plate with slots either the nuts or the
bolt heads can be captured there, so if you are using the crush plate slots to
capture the nuts then you might want to safety wire the heads of the bolts
sticking out the other side of the prop flange. If you put the head of
the bolts in the slots then you are correct makes no sense to safety wire the
heads and leave the nuts unsafed.
Like I mentioned I use the all metal lock nuts
for over 225 hours and never had one even loose.
I just don't like hole through the shank, I have
twisted all the ends of bolts so weakened - just my personal hang-up of
course.
Ed
Ed Anderson
RV-6A N494BW Rotary Powered
Matthews, NC
----- Original Message -----
Sent: Sunday, September 05, 2004 9:56
AM
Subject: [FlyRotary] Re: safety wiring
Ross prop bolts
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
>
> C! onner, 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