X-Virus-Scanned: clean according to Sophos on Logan.com Return-Path: Received: from mail09.syd.optusnet.com.au ([211.29.132.190] verified) by logan.com (CommuniGate Pro SMTP 5.2.2) with ESMTPS id 2879574 for flyrotary@lancaironline.net; Thu, 01 May 2008 03:11:57 -0400 Received-SPF: pass receiver=logan.com; client-ip=211.29.132.190; envelope-from=lendich@optusnet.com.au Received: from george (d220-237-232-70.dsl.nsw.optusnet.com.au [220.237.232.70]) by mail09.syd.optusnet.com.au (8.13.1/8.13.1) with SMTP id m417B95T006662 for ; Thu, 1 May 2008 17:11:11 +1000 Message-ID: <001801c8ab5a$8d1acf90$6400a8c0@george> From: "George Lendich" To: "Rotary motors in aircraft" References: Subject: Re: [FlyRotary] Re: PSRU Date: Thu, 1 May 2008 17:11:16 +1000 MIME-Version: 1.0 Content-Type: multipart/alternative; boundary="----=_NextPart_000_0015_01C8ABAE.5DCC7A00" X-Priority: 3 X-MSMail-Priority: Normal X-Mailer: Microsoft Outlook Express 6.00.2900.3138 X-MimeOLE: Produced By Microsoft MimeOLE V6.00.2900.3198 X-Antivirus: avast! (VPS 0657-0, 12/12/2006), Outbound message X-Antivirus-Status: Clean This is a multi-part message in MIME format. ------=_NextPart_000_0015_01C8ABAE.5DCC7A00 Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable Bill, The front plate does not appear to be tied to the rear plate ( at the = top) other than with the prop shaft itself - to me it looks like there = could be some flexing of this front cantilevered (from the bottom = bellhousing) plate. Something I think could be better engineered - do you feel it's stiff = enough? It also looks very agricultural! I'm sure Jerry could make a much nicer = job of it. George ( down under) Jerry, the plate behind the bellhousing looks 50% thicker than it needs = to be for a double sided system.=20 I do give him points for originality though. He needs to use a aluminum = top sprocket for sure! Good support on both sides for sure, looks super stout. My guess is that the belt is = certain to be the weak link in that system. He could do a serious lightening job on that and still be quite solid. = Good re-sourcing of original materials. Bill Jepson -----Original Message----- From: Jerry Hey To: Rotary motors in aircraft Sent: Wed, 30 Apr 2008 2:45 pm Subject: [FlyRotary] Re: PSRU George, you are very hard to please! I think the guy who made this = knew what he was doing. I'd like to know the weight too. One thing is = for sure, a belt drive has to have two sprockets, upper and lower = shafts, prop flange and so on. They all weigh at least 40 lbs. I think = weight could be saved back by incorporating the alternator in the drive = similar to Briggs and Stratton, likewise the forward engine mounts. Make = that extra structure earn its keep. Jerry=20 =20 On Apr 30, 2008, at 5:21 PM, George Lendich wrote:=20 =20 >=20 >> Does anyone recognize this drive? I found the photo yesterday but=20 >> with no information. I think it is a beauty and I would like to = know=20 >> more. Jerry=20 >=20 > Jerry,=20 > It looks very much a home made job, the top belt wheel looks to be > = made of something solid and would be heavy I would imagine. I can't > = say I like it or the engine mount - but Paul's the expert there.=20 > I'm sure you could make something better Jerry.=20 > It looks like they put the engine really low to cater for the off-> = set thrust line - I wonder if it was made for a pusher?=20 > George ( down under)=20 >=20 > --=20 > Homepage: http://www.flyrotary.com/=20 > Archive and UnSub: = http://mail.lancaironline.net:81/lists/flyrotary/List.html=20 >=20 =20 --=20 Homepage: http://www.flyrotary.com/=20 Archive and UnSub: = http://mail.lancaironline.net:81/lists/flyrotary/List.html=20 -------------------------------------------------------------------------= ----- Plan your next roadtrip with MapQuest.com: America's #1 Mapping Site.=20 -------------------------------------------------------------------------= ----- No virus found in this incoming message. Checked by AVG.=20 Version: 7.5.524 / Virus Database: 269.23.7 - Release Date: 30/04/2008 = 12:00 AM ------=_NextPart_000_0015_01C8ABAE.5DCC7A00 Content-Type: text/html; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable
Bill,
The front plate does = not appear to be=20 tied to the rear plate ( at the top) other than with the prop shaft = itself - to=20 me it looks like there could be some flexing of this front cantilevered = (from=20 the bottom bellhousing) plate.
Something I think could be better = engineered - do=20 you feel it's stiff enough?
It also looks very agricultural! = I'm sure=20 Jerry could make a much nicer job of it.
George ( down under)
 
Jerry, the plate behind the bellhousing looks 50% thicker than it = needs to=20 be for a double sided system.
I do give him points for originality = though.=20 He needs to use a aluminum top sprocket for sure! Good support
on = both sides=20 for sure, looks super stout. My guess is that the belt is certain to be = the weak=20 link in that system.
He could do a serious lightening job on that and = still=20 be quite solid. Good re-sourcing of original materials.
Bill=20 Jepson


-----Original Message-----
From: Jerry Hey=20 <jerry@jerryhey.com>
To: Rotary motors in aircraft=20 <flyrotary@lancaironline.net>
Sent: Wed, 30 Apr 2008 2:45=20 pm
Subject: [FlyRotary] Re: PSRU

George,=20 you are very hard to please! I think the guy who made this knew what = he was=20 doing. I'd like to know the weight too. One thing is for sure, a belt = drive=20 has to have two sprockets, upper and lower shafts, prop flange and so = on. They=20 all weigh at least 40 lbs. I think weight could be saved back by = incorporating=20 the alternator in the drive similar to Briggs and Stratton, likewise = the=20 forward engine mounts. Make that extra structure earn its keep.=20 Jerry 
 
On Apr 30, 2008, at 5:21 PM, George Lendich=20 wrote: 
 
> 
>> Does anyone recognize = this=20 drive? I found the photo yesterday but 
>> with no = information.=20 I think it is a beauty and I would like to know 
>> = more.=20 Jerry 
> 
> Jerry, 
> It looks very = much a=20 home made job, the top belt wheel looks to be > made of something = solid and=20 would be heavy I would imagine. I can't > say I like it or the = engine mount=20 - but Paul's the expert there. 
> I'm sure you could make = something=20 better Jerry. 
> It looks like they put the engine really = low to=20 cater for the off-> set thrust line - I wonder if it was made for a = pusher? 
> George ( down under) 
> 
> = -- 
> Homepage: http://www.flyrotary.com/ 
> Archive = and UnSub:=20 http://mail.lancaironline.net:81/lists/flyrotary/List.htm= l 
> 
 
-- 
Homepage:=20 http://www.flyrotary.com/ 
Archive and = UnSub: http://mail.lancaironline.net:81/lists/flyrotary/List.htm= l 

No virus found in this incoming message.
Checked by AVG.=20
Version: 7.5.524 / Virus Database: 269.23.7 - Release Date: = 30/04/2008=20 12:00 AM
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