Return-Path: Received: from [65.54.168.116] (HELO hotmail.com) by logan.com (CommuniGate Pro SMTP 4.2.8) with ESMTP id 658990 for flyrotary@lancaironline.net; Fri, 04 Feb 2005 12:49:33 -0500 Received-SPF: pass receiver=logan.com; client-ip=65.54.168.116; envelope-from=lors01@msn.com Received: from mail pickup service by hotmail.com with Microsoft SMTPSVC; Fri, 4 Feb 2005 09:49:00 -0800 Message-ID: Received: from 4.174.1.157 by BAY3-DAV12.phx.gbl with DAV; Fri, 04 Feb 2005 17:48:10 +0000 X-Originating-IP: [4.174.1.157] X-Originating-Email: [lors01@msn.com] X-Sender: lors01@msn.com From: "Tracy Crook" To: "Rotary motors in aircraft" , References: Subject: Re: [FlyRotary] Re: CCI sandwich mounts.. torque values.. Date: Fri, 4 Feb 2005 12:48:08 -0500 MIME-Version: 1.0 Content-Type: multipart/alternative; boundary="----=_NextPart_000_012D_01C50AB7.C718C770" X-Priority: 3 X-MSMail-Priority: Normal X-Mailer: MSN 9 X-MimeOLE: Produced By MSN MimeOLE V9.10.0009.2900 Seal-Send-Time: Fri, 4 Feb 2005 12:48:08 -0500 X-OriginalArrivalTime: 04 Feb 2005 17:49:00.0540 (UTC) FILETIME=[CEEBB3C0:01C50AE1] This is a multi-part message in MIME format. ------=_NextPart_000_012D_01C50AB7.C718C770 Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable Should have read your post more carefully Dave, could have figured out = that you meant the FW bolts. =20 BTW, a couple of builders have wrung off the AN4 nuts on the RD-1 drive = after reading the torque spec in inch-pounds. Many torque wrenches read = out in ft-pounds. You can probably guess the rest of the story. Tracy ----- Original Message -----=20 From: David Staten=20 To: Rotary motors in aircraft=20 Sent: Friday, February 04, 2005 10:24 AM Subject: [FlyRotary] Re: CCI sandwich mounts.. torque values.. Thanks Fred.. and everyone who responded. =20 Sorry I was less than clear in my original post.. Thats what I get for = posting while tired. I was indeed referring to the firewall mounting=20 hardware with regards to the CCI mount. I am now beginning to learn "all about AN and MS hardware" from the = lady=20 who owns the aircraft parts store. She visibly winced a few times when = I=20 described that I was helping build a (WINCE) homebuilt and we were=20 putting an auto engine (WINCE) from Mazda (WINCE) on it.. =20 All's well that ends well, though. she took some time to explain the = AN=20 nomenclature regarding the bolt specs so now I know what I am looking=20 at/for. She also happens to have a BIG torque wrench thats good for = 600=20 ft lbs that she will let me borrow to ensure that the "big nut" is=20 torqued properly.. She winced a few more times when I described how I=20 was unable to find a large enough torque wrench at reasonable cost, = nor=20 a torque multiplier, so I described the 5 ft pipe on the end of the 2 = ft=20 breaker bar that I applied an approx 60-70 lbs to on the end (after=20 practicing some 50-60 lbs pushes..). =20 Seriously she's a nice lady, been in the aviation parts/maintenance=20 business for 40 years and she just wants to ensure the job is done=20 right, and safely. =20 Anyhooo... thats all for now, Dave CCI wrote: > > Hi Dave, You want to use the tension-type nut torque values, that is = > for AN 310, 160-190 inch-pounds. Fred, CCI. > > > > > > > > > At 05:14 PM 2/3/2005, you wrote: > >> The oil pan "sandwich" mounts for the rotary take 3/8" bolts.. = Chris=20 >> and I had it temporarily mounted using hardware store parts, but we = >> elected to use AN bolts to fit it up for the final/working=20 >> attachment. 3/8 translates to AN6... and we are looking at about=20 >> AN6-37 for the bottom and AN6-34 for the top mounting holes (this=20 >> takes into account the plywood aft bulkhead and stainless=20 >> overlay/firewall, with some fender washers to distribute the force. >> I don't have the CCI paperwork handy.. is there a recommended=20 >> fastener and torque value for use with those mounts? >> What is an appropriate torque value with AN6 bolts/nuts? I have one = >> reference on hand and want to compare notes. I have the "aviation=20 >> mechanic handbook" 4th ed by Dale Crane that lists two different=20 >> torque values: one is "nuts tension torque limits" and is 160-190=20 >> INCH pounds, but it also lists a "nut shear torque limit" as well = of=20 >> 95-110 INCH pounds. >> Rather than make a guess here, would someone with the knowledge = spell=20 >> out for me the difference between those two categories? >> Dave Staten >> >> >>>> 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 >> > >> Homepage: http://www.flyrotary.com/ >> Archive: = http://lancaironline.net/lists/flyrotary/List.html ------=_NextPart_000_012D_01C50AB7.C718C770 Content-Type: text/html; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable
Should have read your post more carefully Dave, could have figured = out that=20 you meant the FW bolts. 
 
BTW, a couple of builders have wrung off the AN4 nuts on the RD-1 = drive=20 after reading the torque spec in inch-pounds.  Many torque = wrenches=20 read out in ft-pounds.   You can probably guess the rest = of the=20 story.
 
Tracy
----- Original Message -----
From: David=20 Staten
To: Rotary motors in = aircraft
Sent: Friday, February 04, 2005 = 10:24=20 AM
Subject: [FlyRotary] Re: CCI = sandwich=20 mounts.. torque values..

Thanks Fred.. and everyone who = responded.
 
Sorry I=20 was less than clear in my original post.. Thats what I get for =
posting=20 while tired. I was indeed referring to the firewall mounting =
hardware with=20 regards to the CCI mount.

I am now beginning to learn "all = about AN and=20 MS hardware" from the lady
who owns the aircraft parts store. She = visibly=20 winced a few times when I
described that I was helping build a = (WINCE)=20 homebuilt and we were
putting an auto engine (WINCE) from Mazda = (WINCE) on=20 it..
 
All's well that ends well, though. she took some = time to=20 explain the AN
nomenclature regarding the bolt specs so now I know = what I=20 am looking
at/for. She also happens to have a BIG torque wrench = thats good=20 for 600
ft lbs that she will let me borrow to ensure that the "big = nut" is=20
torqued properly.. She winced a few more times when I described = how I=20
was unable to find a large enough torque wrench at reasonable = cost, nor=20
a torque multiplier, so I described the 5 ft pipe on the end of = the 2 ft=20
breaker bar that I applied an approx 60-70 lbs to on the end = (after=20
practicing some 50-60 lbs pushes..).
 
Seriously she's = a nice=20 lady, been in the aviation parts/maintenance
business for 40 years = and she=20 just wants to ensure the job is done
right, and=20 safely.
 
Anyhooo... thats all for now,
Dave

CCI=20 wrote:

>
> Hi Dave, You want to use the tension-type = nut=20 torque values, that is
> for AN 310, 160-190 inch-pounds. Fred, = = CCI.
>
>
>
>
>
>
>
>
&= gt;=20 At 05:14 PM 2/3/2005, you wrote:
>
>> The oil pan = "sandwich"=20 mounts  for the rotary take 3/8" bolts.. Chris
>> and I = had it=20 temporarily mounted using hardware store parts, but we
>> = elected to=20 use AN bolts to fit it up for the final/working
>> = attachment. 3/8=20 translates to AN6... and we are looking at about
>> AN6-37 = for the=20 bottom and AN6-34 for the top mounting holes (this
>> takes = into=20 account the plywood aft bulkhead and stainless
>> = overlay/firewall,=20 with some fender washers to distribute the force.
>> I don't = have the=20 CCI paperwork handy.. is there a recommended
>> fastener and = torque=20 value for use with those mounts?
>> What is an appropriate = torque=20 value with AN6 bolts/nuts? I have one
>> reference on hand = and want=20 to compare notes. I have the "aviation
>> mechanic handbook" = 4th ed=20 by Dale Crane that lists two different
>> torque values: one = is=20 "nuts tension torque limits" and is 160-190
>> INCH pounds, = but it=20 also lists a "nut shear torque limit" as well of
>> 95-110 = INCH=20 pounds.
>> Rather than make a guess here, would someone with = the=20 knowledge spell
>> out for me the difference between those = two=20 categories?
>> Dave=20 Staten
>>
>>
>>>>  = Homepage:  http://www.flyrotary.com/
>&= gt;>> =20 Archive:   http://lancai= ronline.net/lists/flyrotary/List.html
>>>
>
>=
>
>
>>> =20 Homepage:  http://www.flyrotary.com/
>&= gt;> =20 Archive:   http://lancai= ronline.net/lists/flyrotary/List.html
>>
>


= >> =20 Homepage:  http://www.flyrotary.com/
>&= gt; =20 Archive:   http://lancai= ronline.net/lists/flyrotary/List.html
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