X-Virus-Scanned: clean according to Sophos on Logan.com Return-Path: Received: from access.aic-fl.com ([204.49.76.2] verified) by logan.com (CommuniGate Pro SMTP 4.3.4) with ESMTP id 1006170 for flyrotary@lancaironline.net; Sat, 18 Jun 2005 15:25:42 -0400 Received-SPF: none receiver=logan.com; client-ip=204.49.76.2; envelope-from=unicorn@gdsys.net Received: from b9k4u9 (unverified [204.49.76.107]) by access.aic-fl.com (Rockliffe SMTPRA 4.5.6) with SMTP id for ; Sat, 18 Jun 2005 14:19:16 -0500 Message-ID: <001f01c5744b$ea703ac0$6b4c31cc@b9k4u9> From: "Richard Sohn" To: "Rotary motors in aircraft" References: Subject: Re: [FlyRotary] Re: re-drive question for George and Richard Date: Sat, 18 Jun 2005 14:22:53 -0700 MIME-Version: 1.0 Content-Type: multipart/alternative; boundary="----=_NextPart_000_001C_01C57411.37233F10" X-Priority: 3 X-MSMail-Priority: Normal X-Mailer: Microsoft Outlook Express 6.00.2900.2180 X-MimeOLE: Produced By Microsoft MimeOLE V6.00.2900.2180 This is a multi-part message in MIME format. ------=_NextPart_000_001C_01C57411.37233F10 Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable Message ----- Original Message -----=20 From: Russell Duffy=20 To: Rotary motors in aircraft=20 Sent: Saturday, June 18, 2005 7:38 AM Subject: [FlyRotary] Re: re-drive question for George and Richard yes, the 85lb is just the block as it is running now. The FF, dry, = will be 170lb. Keep in mind it is 12A based. The 13B based will be a bit = heavier. Hi Richard, Do you have a weight for all of your redrive components? I'm trying = to get a comparison to Tracy's 45 lbs weight, which includes everything = but the flex plate itself (I assume). When you add the Hirth drive, = mounting plate and hardware, input shaft, drive coupling mechanism, what = does it come to? =20 I think I guessed that would all be about 30 lbs. Tracy's drive could = fairly easily be reduced to about 40 lbs, and possibly a bit lower if = weight becomes critical. Fortunately, it's not critical for me at the = moment. It's also yet to be seen how the RD-1C will cope with the pulse = frequency of the single rotor near idle. There may well be some = dampener durometer modification to be done. I won't know until I fire = it up, which should be around the end of the Summer. =20 Thanks, Rusty (climb test will have to wait until tomorrow) Hi Rusty, you could not use the componet weights of my set up because the = externals of my side housing have nothing in common eternally with the = MAZDA housing. My mounting plate for the redrive is much smaller than = what you need. My flywheel is 10" dia, and the mounting of the adapter = plate is very close around the flywheel. Essentially, I have nothing = further out than the tension Bolts, or for that matter, the rotor = housing outer contour. Sorry to be not of more help on this one. Richard Sohn N-2071U =20 ------=_NextPart_000_001C_01C57411.37233F10 Content-Type: text/html; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable Message
 
----- Original Message -----
From:=20 Russell=20 Duffy
Sent: Saturday, June 18, 2005 = 7:38=20 AM
Subject: [FlyRotary] Re: = re-drive=20 question for George and Richard

yes, the 85lb is just the block as it = is running=20 now. The FF, dry, will be 170lb. Keep in mind it is 12A based. The 13B = based=20 will be a bit heavier.
 
 
Hi=20 Richard,
 
Do you=20 have a weight for all of your redrive = components? =20 I'm trying to get a comparison to Tracy's 45 lbs weight, which = includes=20 everything but the flex plate itself (I assume).  When you = add the=20 Hirth drive, mounting plate and hardware, input shaft, drive=20 coupling mechanism, what does it come to?  =20
 
I think I=20 guessed that would all be about 30 lbs.  Tracy's drive = could fairly=20 easily be reduced to about 40 lbs, and possibly a bit lower if weight = becomes=20 critical.  Fortunately, it's not critical for me at the=20 moment.  It's also yet to be seen how the RD-1C will cope with = the=20 pulse frequency of the single rotor near idle.  There = may well=20 be some dampener durometer modification to be done.  I won't = know=20 until I fire it up, which should be around the end of the=20 Summer.  
 
Thanks,
Rusty=20 (climb test will have to wait until tomorrow)
 
Hi=20 Rusty,
 
you could=20 not use the componet weights of my set up because the externals of my = side=20 housing have nothing in common eternally with the MAZDA housing. My = mounting=20 plate for the redrive is much smaller than what you need. My flywheel = is 10"=20 dia, and the mounting of the adapter plate is very close around the = flywheel.=20 Essentially, I have nothing further out than the tension Bolts, or for = that=20 matter, the rotor housing outer contour.
 
Sorry to be=20 not of more help on this one.
 
Richard = Sohn
N-2071U
 
 
    
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