Return-Path: Received: from imf21aec.mail.bellsouth.net ([205.152.59.69] verified) by logan.com (CommuniGate Pro SMTP 4.2) with ESMTP id 394603 for flyrotary@lancaironline.net; Sun, 05 Sep 2004 20:57:06 -0400 Received-SPF: pass receiver=logan.com; client-ip=205.152.59.69; envelope-from=sqpilot@bellsouth.net Received: from Carol ([209.214.44.22]) by imf21aec.mail.bellsouth.net (InterMail vM.5.01.06.08 201-253-122-130-108-20031117) with SMTP id <20040906005631.XCDO1791.imf21aec.mail.bellsouth.net@Carol> for ; Sun, 5 Sep 2004 20:56:31 -0400 Message-ID: <002201c493ac$5061a110$162cd6d1@Carol> From: "paul" To: "Rotary motors in aircraft" References: Subject: Re: [FlyRotary] Re: safety wiring Ross prop bolts Date: Sun, 5 Sep 2004 19:56:15 -0500 MIME-Version: 1.0 Content-Type: multipart/alternative; boundary="----=_NextPart_000_001F_01C49382.66B50F30" X-Priority: 3 X-MSMail-Priority: Normal X-Mailer: Microsoft Outlook Express 6.00.2800.1437 X-MimeOLE: Produced By Microsoft MimeOLE V6.00.2800.1441 This is a multi-part message in MIME format. ------=_NextPart_000_001F_01C49382.66B50F30 Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable Hi, everyone....I just checked....my crush plate is smooth on both = sides. Thanks for all the input on this....I guess it's steel locknuts = for me. Paul Conner....SQ2000 safely at airport, wings both on. Taxi = testing this week. =20 ----- Original Message -----=20 From: Ed Anderson=20 To: Rotary motors in aircraft=20 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 -----=20 From: kenpowell@comcast.net=20 To: Rotary motors in aircraft=20 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 --------------=20 > Paul, if you have all metal type (NOT NYLON Inserts) lock-nuts = for the=20 > bolts and a crush plate with a recess that the heads of the = bolts will seat=20 > into preventing them from turning, then it is not necessary to = safety=20 > wire the bolts. That is the way I flew my Ross drive and my = current RD-1C=20 > drive. However, You must use all metal type lock-nuts!=20 >=20 > If you do want the safety wire then I suggest get the drilled = head type=20 > bolts. Drilling the shank can weaken the bolt especially if you = have a bit=20 > of torque to apply.=20 >=20 > FWIW=20 >=20 > Ed=20 >=20 > Ed Anderson=20 > RV-6A N494BW Rotary Powered=20 > Matthews, NC=20 > ----- Original Message -----=20 > From: "paul"=20 > To: "Rotary motors in aircraft"!=20 > Sent: Sunday, September 05, 2004 9:13 AM=20 > Subject: [FlyRotary] safety wiring Ross prop bolts=20 >=20 >=20 > > Hi all....On a typical aircraft prop installtion, the heads of = the prop=20 > > bolts are drilled and then safety wired. This works, because = the prop=20 > flange=20 > > has fixed threaded sleeves into which the prop bolts fasten. = On my Ross=20 > > PSRU, there are thru-bolts, and instead of the bolts being = threaded into a=20 > > fixed unit, they go through the crush plate on the engine side = of the prop=20 > > and have locknuts instead. What might be the best method of = securing=20 > these=20 > > type of prop bolts? Unfortunately, I have seen a few other = rotary=20 > > installations with a Ross redrive, but never bothered to look = to see if=20 > the=20 > > prop bolts had safety wire, etc. Thanks for any and all = suggestions. Paul=20 > > C! onner, 13b powered SQ2000 transporting to the airport = today.=20 > >=20 > >=20 > >=20 > > >> Homepage: http://www.flyrotary.com/=20 > > >> Archive: http://lancaironline.net/lists/flyrotary/List.html = > >=20 >=20 >=20 >=20 > >> Homepage: http://www.flyrotary.com/=20 > >> Archive: http://lancaironline.net/lists/flyrotary/List.html ------=_NextPart_000_001F_01C49382.66B50F30 Content-Type: text/html; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable
Hi, everyone....I just checked....my = crush plate is=20 smooth on both sides.  Thanks for all the input on this....I guess = it's=20 steel locknuts for me.  Paul Conner....SQ2000 safely at airport, = wings both=20 on.  Taxi testing this week. 
----- Original Message -----
From:=20 Ed=20 Anderson
Sent: Sunday, September 05, = 2004 2:34=20 PM
Subject: [FlyRotary] Re: safety = wiring=20 Ross prop bolts

Well, Ken it depends on which way = Paul sticks the=20 bolts through.  If he has a crush plate with slots either the = nuts or the=20 bolt heads can be captured there, so if you are using the crush plate = slots to=20 capture the nuts then you might want to safety wire the heads of the = bolts=20 sticking out the other side of the prop flange.  If you put the = head of=20 the bolts in the slots then you are correct makes no sense to safety = wire the=20 heads and leave the nuts unsafed.
 
Like I mentioned I use the all metal = lock nuts=20 for over 225 hours and never had one even loose.
 
I just don't like hole through the = shank, I have=20 twisted all the ends of bolts so weakened  - just my personal = hang-up of=20 course.
 
 
Ed
 
Ed Anderson
RV-6A N494BW Rotary Powered
Matthews, NC
----- Original Message -----
From:=20 kenpowell@comcast.net =
To: Rotary motors in = aircraft=20
Sent: Sunday, September 05, = 2004 9:56=20 AM
Subject: [FlyRotary] Re: = safety wiring=20 Ross prop bolts

Hi Ed,

I came to aviation after racing motorcycles for many years.  = In the=20 early mototrcycle days I had stuff falling off the bike (actually, = just=20 getting loose) until I discovered thread lockers (I was only a kid = in those=20 early years(grin)).  Well, now that I have seen the light and=20 discovered safety wire (I'm not sure its 'better' though) please = educate me=20 further - How is safety wiring the head of a bolt going to keep the = nuts=20 from falling off?  Why not drill the aft end of the bolt (on = the=20 backside of the nut) for a small cotter pin?

Thanks,  Ken Powell

--------------=20 Original message --------------

> Paul, if you have all = metal=20 type (NOT NYLON Inserts) lock-nuts for the
> bolts and a = crush=20 plate with a recess that the heads of the bolts will seat
> = into=20 preventing them from turning, then it is not necessary to safety =
>=20 wire the bolts. That is the way I flew my Ross drive and my = current RD-1C=20
> drive. However, You must use all metal type lock-nuts! =
>=20
> If you do want the safety wire then I suggest get the = drilled=20 head type
> bolts. Drilling the shank can weaken the bolt=20 especially if you have a bit
> of torque to apply.
> =
> FWIW
>
> Ed
>
> Ed Anderson =
>=20 RV-6A N494BW Rotary Powered
> Matthews, NC
> ----- = Original=20 Message -----
> From: "paul" =
> To:=20 "Rotary motors in aircraft"!
> = Sent:=20 Sunday, September 05, 2004 9:13 AM
> Subject: [FlyRotary] = safety=20 wiring Ross prop bolts
>
>
> > Hi = all....On a=20 typical aircraft prop installtion, the heads of the prop
> = >=20 bolts are drilled and then safety wired. This works, because the = prop=20
> flange
> > has fixed threaded sleeves into = which the=20 prop bolts fasten. On my Ross
> > PSRU, there are = thru-bolts,=20 and instead of the bolts being threaded into a
> > fixed = unit,=20 they go through the crush plate on the engine side of the prop =
>=20 > and have locknuts instead. What might be the best method of = securing=20
> these
> > type of prop bolts? Unfortunately, I = have=20 seen a few other rotary
> > installations with a Ross = redrive,=20 but never bothered to look to see if
> the
> > = prop bolts=20 had safety wire, etc. Thanks for any and all suggestions. Paul =
>=20 > C! onner, 13b powered SQ2000 transporting to the airport = today.=20
> >
> >
> >
> > >> = Homepage:=20 http://www.flyrotary.com/
> > >> Archive:=20 http://lancaironline.net/lists/flyrotary/List.html
> > =
>=20
>
>
> >> Homepage: = http://www.flyrotary.com/=20
> >> Archive:=20 http://lancaironline.net/lists/flyrotary/List.html=20
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