X-Virus-Scanned: clean according to Sophos on Logan.com Return-Path: Received: from mail04.syd.optusnet.com.au ([211.29.132.185] verified) by logan.com (CommuniGate Pro SMTP 4.3.4) with ESMTPS id 1005682 for flyrotary@lancaironline.net; Fri, 17 Jun 2005 19:20:25 -0400 Received-SPF: none receiver=logan.com; client-ip=211.29.132.185; envelope-from=lendich@optusnet.com.au Received: from george (d211-31-104-109.dsl.nsw.optusnet.com.au [211.31.104.109]) by mail04.syd.optusnet.com.au (8.12.11/8.12.11) with SMTP id j5HNJawR013650 for ; Sat, 18 Jun 2005 09:19:37 +1000 Message-ID: <005301c57393$c7ebe700$6d681fd3@george> From: "George Lendich" To: "Rotary motors in aircraft" References: Subject: Re: [FlyRotary] Re: re-drive question for George and Richard Date: Sat, 18 Jun 2005 09:24:59 +1000 MIME-Version: 1.0 Content-Type: multipart/alternative; boundary="----=_NextPart_000_0050_01C573E7.99319410" X-Priority: 3 X-MSMail-Priority: Normal X-Mailer: Microsoft Outlook Express 6.00.2800.1106 X-MimeOLE: Produced By Microsoft MimeOLE V6.00.2800.1106 This is a multi-part message in MIME format. ------=_NextPart_000_0050_01C573E7.99319410 Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable Message Rusty, I sure hope your right mate, I roughly weighed the centre housing, ( = 31lbs or 14 kilo) a rotor ( 9lbs or 4kilo) and rotor housing ( 12lbs or = 5.5 kilo) and guess at the weight of the single shaft ( 5lbs difference = or 2.2 kilo) Max all-up is approx 60lbs or 27kilo and took that off = 330 lbs (all up installation). Mine is a worst case scenario. What did I forget !? Both Richard Sohn and myself are working on aluminium housings - I need = some desperately. However there's not a lot of savings there for the = single as it doesn't have a centre housing. The best case for savings with his latest development, which is now very = similar to my own, Front housings 24 lbs ( 4 lbs of wear plate) =3D 7 = lbs of aluminium housing + 4 of wear plate =3D total of 11 lbs ( savings = of 13 lbs); Rear housing 27lbs (4 lbs of wear plate) , 8lbs + 4pounds of = wear plate is 12 lbs ( savings of 15lbs). Total is say approx 27/ 28 lbs as the wear plate is still steel. So = even with aluminium housings ( 330 - 90) =3D 240 lbs ( in round = numbers). I would like to know where I went wrong or what I forgot to omit as I = like your figures better Rusty. Don't tell me oil!! George ( down under) You might want to check your kg to lbs conversion rates again, mate. If = you're just counting the engine, and PSRU, you could probably save some = weight by using a stock 13B and Tracy's drive :-) You aren't making = that PP adapter out of lead are you :-) FWIW, my estimate is for a worst case weight of 230 lbs for the total = engine installation using stock housings. I'm pretty sure I can beat = that weight on the Kolb, but I haven't added everything up yet. If = anyone ever gets an aluminum front and rear housing to market, that will = save about 25 lbs as well. Cheers, Rusty (no idea what I'll use for a muffler on the single) =20 ------=_NextPart_000_0050_01C573E7.99319410 Content-Type: text/html; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable Message
 
Rusty,
I=20 sure hope your right mate, I roughly weighed the centre housing, ( = 31lbs or=20 14 kilo) a rotor ( 9lbs or 4kilo) and rotor housing ( 12lbs or 5.5 = kilo)=20 and guess at the weight of the single shaft ( 5lbs difference or 2.2=20 kilo)   Max all-up is approx 60lbs or 27kilo and took that off = 330 lbs=20 (all up installation). Mine is a worst case=20 scenario.
 
What=20 did I forget !?
 
Both=20 Richard Sohn and myself are working on aluminium housings - I need some=20 desperately. However there's not a lot of savings there for the single = as it=20 doesn't have a centre housing.
 
The=20 best case for savings with his latest development, which is now very = similar to=20 my own, Front housings  24 lbs ( 4 lbs of wear plate) = =3D   7=20 lbs of aluminium housing + 4 of wear plate =3D total of 11 lbs ( = savings of=20 13 lbs); Rear housing 27lbs (4 lbs of wear plate) , 8lbs + 4pounds = of wear=20 plate is 12 lbs ( savings of 15lbs).
Total is say  approx 27/ 28 lbs as = the wear=20 plate is still steel. So even with aluminium housings ( 330 - 90) =3D = 240 lbs ( in=20 round numbers).
 
I would=20 like to know where I went wrong or what I forgot to omit as I like your = figures=20 better Rusty. Don't tell me oil!!
George=20 ( down under)
 
You might want to check your kg to lbs = conversion rates=20 again, mate.  If you're just counting the engine, and PSRU, = you could=20 probably save some weight by using a stock 13B and Tracy's drive=20 :-)    You aren't making that PP adapter out of = lead=20 are you :-)
 
FWIW, my=20 estimate is for a worst case weight of 230 lbs for the total engine=20 installation using stock housings.   I'm pretty sure I can = beat that=20 weight on the Kolb, but I haven't added everything up yet.  If = anyone=20 ever gets an aluminum front and rear housing to market, that will save = about=20 25 lbs as well.
 
Cheers,
Rusty (no idea what I'll use = for a muffler=20 on the single) 
 
 
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