X-Virus-Scanned: clean according to Sophos on Logan.com Return-Path: Received: from mail-gx0-f17.google.com ([209.85.217.17] verified) by logan.com (CommuniGate Pro SMTP 5.2.7) with ESMTP id 3121734 for flyrotary@lancaironline.net; Tue, 09 Sep 2008 17:01:56 -0400 Received-SPF: pass receiver=logan.com; client-ip=209.85.217.17; envelope-from=lehanover@gmail.com Received: by gxk10 with SMTP id 10so11817441gxk.19 for ; Tue, 09 Sep 2008 14:01:19 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=gamma; h=domainkey-signature:received:received:message-id:date:from:to :subject:mime-version:content-type; bh=Es9uQfqdZSjNIHluHq047+l/0dQxNNegFhLGJytNd6o=; b=Vr4BzGCnDkfkkTxv67nCOp5A40XJiQaXBT09fK8hASgTJ9Vf1MIURMnO9pxkZsQqV9 L2C4rrLsKzpqYPnX3z/DCIiPfAvnKbbiI7hRDmNE4RFGozaGq09nUpxHelxto3Ahf2/B a/GiviLv99oGFVSIPWysevknQz/9eWhs6wCSg= DomainKey-Signature: a=rsa-sha1; c=nofws; d=gmail.com; s=gamma; h=message-id:date:from:to:subject:mime-version:content-type; b=XZyBcISGsVzRf4IiGTnjQie/A42MdaKipgvwHkT/u4LYQqxl3fDOGiID9NyLvui7pd PW0LaJzO/J/9ghy0MjtqTgQc6ofcSVolYV33f6oBL0Pwsl13Wo96TLaGHZVhDgspXogM gU/orxfo4gRK55JGDk6rcioTaUV+JKlFursjE= Received: by 10.142.133.15 with SMTP id g15mr95900wfd.83.1220994078610; Tue, 09 Sep 2008 14:01:18 -0700 (PDT) Received: by 10.143.159.3 with HTTP; Tue, 9 Sep 2008 14:01:18 -0700 (PDT) Message-ID: <1ab24f410809091401x3717f5fbk115b26b3b50ce787@mail.gmail.com> Date: Tue, 9 Sep 2008 17:01:18 -0400 From: "Lynn Hanover" To: flyrotary@lancaironline.net Subject: Nut off MIME-Version: 1.0 Content-Type: multipart/alternative; boundary="----=_Part_798_10170403.1220994078611" ------=_Part_798_10170403.1220994078611 Content-Type: text/plain; charset=WINDOWS-1252 Content-Transfer-Encoding: quoted-printable Content-Disposition: inline Chris, My recommendation is to get one of the large =BE" (900 + ft =96 lbs) air wrenches. I got one for $99 and it earned its keep the first time I had t= o get the big nut off. 2 seconds and it was loose. In fact, had a gent load his rotary in his car and drive 90 mile round trip to my hangar =96 for the= 2 seconds it took to get his loose as well. He had spent three days trying t= o stabilize the block and using a pipe on a wrench ( as well as many of the methods you attempted) to get it loose, all which failed. Believe, me you'll love it for that purpose alone =96 not counting all the other uses. I had a smaller =BD" 300 ft-lb air wrench but it just wasn't u= p to the job. Ed Anderson Rv-6A N494BW Rotary Powered Matthews, NC eanderson@carolina.rr.com http://www.andersonee.com http://members.cox.net/rogersda/rotary/configs.htm#N494BW http://www.dmack.net/mazda/index.html For those who wish to use the nut again but have difficulty removing it, heat any flat on the nut with an Acetylene Oxygen medium tip, to pink. This makes the nut bigger than when it is cold, and will fail the Locktite if any was used. With a long punch, and a light fast moving hammer, drive the nut loose. I have never had this not work since 1980. To install the nut, place a deep socket between the head of a case bolt and the counterweight to prevent the counterweight from turning. Place a small drop of red Locktite on your finger. Wipe the area where the nut will touch the counterweight with Locktite. A small drop because Locktite on the bearing will glue the bearing to the crank. So, no Loctite on the taper at all. Warm the nut to the point that is uncomfortable to hang on to. Spin th= e nut on the shaft, slip on the socket and spin up the 1/2" drive impact gun at 120 pounds of air pressure, and hold the trigger down until the nut stop= s turning, and then a few seconds more. There you go. Over 350 foot pounds of torque. And it tightens up a bit when it cools, and it is Loctited. Never use the soft locking washer. It extrudes over time releasing some of the torque load on the nut. Duh................ I have never had one come loose, even with the shock loads of a dog ring transmission. No tears, no injuries, no failures. Lynn E. Hanover ------=_Part_798_10170403.1220994078611 Content-Type: text/html; charset=WINDOWS-1252 Content-Transfer-Encoding: quoted-printable Content-Disposition: inline

 

My recommendati= on is to get one of the large =BE"  (900 + ft =96 lbs) air wrenches.&n= bsp; I got one for $99 and it earned its keep  the first time I had to= get the big nut off.  2 seconds and it was loose.  In fact, had = a gent load his rotary in his car and drive 90 mile round trip to my hangar= =96 for the 2 seconds it took to get his loose as well.  He had spent= three days trying to stabilize the block and using a pipe on a wrench ( as= well as many of the methods you attempted) to get it loose, all which fail= ed.

 

Believe, me you= 'll love it for that purpose alone =96 not counting all the other uses.&nbs= p; I had a smaller =BD" 300 ft-lb air wrench but it just wasn't up to the j= ob.

 

Ed Anderson

Rv-6A N494BW Rotary P= owered

Matthews, NC

eanderson@carolina.rr.com

http://www.ander= sonee.com

http://members.cox.net/rogersda/rotary/conf= igs.htm#N494BW

http://www.dmack.net/mazda/index.html

For those who wish to use the nut a= gain but have difficulty removing it, heat any flat on the nut with an= Acetylene Oxygen medium tip, to pink.

This makes the nut bigger than when= it is cold, and will fail the Locktite if any was used. With a long punch,= and a light fast moving hammer, drive the nut loose. I have never had this= not work since 1980.

To install the nut, place a deep so= cket between the head of a case bolt and the counterweight to prevent the c= ounterweight from turning. Place a small drop of red Locktite on your finge= r. Wipe the area where the nut will touch the counterweight with Locktite. = A small drop because Locktite on the bearing will glue the bearing to = the crank. So, no Loctite on the taper at all. Warm the nut to the point th= at is uncomfortable to hang on to. Spin the nut on the shaft, slip on = the socket and spin up the 1/2" drive impact gun at 120 pounds of air = pressure, and hold the trigger down until the nut stops turning, and then a= few seconds more. There you go. Over 350 foot pounds of torque. And it tig= htens up a bit when it cools, and it is Loctited. Never use the soft lockin= g washer. It extrudes over time releasing some of the torque load on the nu= t. Duh................

I have never had one come loose, ev= en with the shock loads of a dog ring transmission. No tears, no injuries, = no failures. 

Lynn E. Hanover

 

 

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