X-Virus-Scanned: clean according to Sophos on Logan.com Return-Path: Received: from mail18.syd.optusnet.com.au ([211.29.132.199] verified) by logan.com (CommuniGate Pro SMTP 5.2.2) with ESMTPS id 2880690 for flyrotary@lancaironline.net; Thu, 01 May 2008 18:11:29 -0400 Received-SPF: pass receiver=logan.com; client-ip=211.29.132.199; envelope-from=lendich@optusnet.com.au Received: from george (d220-237-232-70.dsl.nsw.optusnet.com.au [220.237.232.70]) by mail18.syd.optusnet.com.au (8.13.1/8.13.1) with SMTP id m41MAf9P022675 for ; Fri, 2 May 2008 08:10:42 +1000 Message-ID: <003201c8abd8$367ebba0$6400a8c0@george> From: "George Lendich" To: "Rotary motors in aircraft" References: Subject: Re: [FlyRotary] Re: PSRU Date: Fri, 2 May 2008 08:10:47 +1000 MIME-Version: 1.0 Content-Type: multipart/alternative; boundary="----=_NextPart_000_002F_01C8AC2C.07306610" 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_002F_01C8AC2C.07306610 Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable Bill, I agree, and that is what I felt that was needed, but wanted your = opinion on it, as your the engineer. I wasn't alluding to thicker plates = - just means more weight IMHO. Thicker is stronger for agricultural = equipment and the farmer's needs that's for sure, it even looks good on = the land - but not for the aviator who is balancing strength with weight = issues. I though bringing this up might help Jerry design out potential = problems, if he ventured down this path. George ( down under) George, If anything needs beefing up it would be the fore and aft direction. = That could be improved by boxing the sides of the beams supporting the = bearings. That would do more than thicker plates. That could be done = with way less material that way rather than making the plates thicker Bill Jepson -----Original Message----- From: George Lendich To: Rotary motors in aircraft Sent: Thu, 1 May 2008 12:11 am Subject: [FlyRotary] Re: PSRU 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 = >> 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 -------------------------------------------------------------------------= ----- 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: 269.23.7/1408 - Release Date: = 30/04/2008 6:10 PM ------=_NextPart_000_002F_01C8AC2C.07306610 Content-Type: text/html; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable
 
Bill,
I agree, and that is what I felt that = was needed,=20 but wanted your opinion on it, as your the engineer. I wasn't alluding = to=20 thicker plates - just means more weight IMHO. Thicker is stronger for=20 agricultural equipment and the farmer's needs that's for sure, it = even=20 looks good on the land - but not for the aviator who is balancing = strength=20 with weight issues.
 
I though bringing this up might help = Jerry design=20 out potential problems, if he ventured down this path.
George ( down under)
 
 
George,
If anything needs beefing up it would be the fore and = aft=20 direction. That could be improved by boxing the sides of the beams = supporting=20 the bearings. That would do more than thicker plates. That could be done = with=20 way less material that way rather than making the plates thicker
Bill = Jepson


-----Original Message-----
From: George Lendich=20 <lendich@optusnet.com.au>
To: Rotary motors in aircraft=20 <flyrotary@lancaironline.net>
Sent: Thu, 1 May 2008 12:11=20 am
Subject: [FlyRotary] Re: PSRU

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 -=20 to me it looks like there could be some flexing of this front = cantilevered=20 (from 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=20 to be for a double sided system.
I do give him points for = originality=20 though. He needs to use a aluminum top sprocket for sure! Good = support
on=20 both sides for sure, looks super stout. My guess is that the belt is = certain=20 to be the weak link in that system.
He could do a serious = lightening job on=20 that and still be quite solid. Good re-sourcing of original = materials.
Bill=20 Jepson


-----Original Message-----
From: Jerry Hey <jerry@jerryhey.com>
To: = Rotary=20 motors in aircraft <flyrotary@lancaironline.net>
Sent:=20 Wed, 30 Apr 2008 2:45 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.=20 They all weigh at least 40 lbs. I think weight could be saved back = by=20 incorporating the alternator in the drive similar to Briggs and = Stratton,=20 likewise the forward engine mounts. Make that extra structure earn = its keep.=20 Jerry 
 
On Apr 30, 2008, at 5:21 PM, George Lendich = wrote: 
 
> 
>> Does anyone = recognize this=20 drive? I found the photo yesterday but 
>> with no=20 information. I think it is a beauty and I would like to=20 know 
>> more. Jerry 
> 
>=20 Jerry, 
> It looks very much a home made job, the top = belt wheel=20 looks to be > made of something solid and would be heavy I would = imagine.=20 I can't > say I like it or the engine mount - but Paul's the = expert=20 there. 
> I'm sure you could make something better=20 Jerry. 
> It looks like they put the engine really low to = cater=20 for the off-> set thrust line - I wonder if it was made for a=20 pusher? 
> George ( down = under) 
> 
>=20 -- 
> 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

No virus found in this incoming message.
Checked by AVG.=20
Version: 7.5.524 / Virus Database: 269.23.7/1408 - Release Date:=20 30/04/2008 6:10 PM
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