Return-Path: Received: from imf23aec.mail.bellsouth.net ([205.152.59.71] verified) by logan.com (CommuniGate Pro SMTP 4.2.2) with ESMTP id 420279 for flyrotary@lancaironline.net; Sat, 18 Sep 2004 08:06:59 -0400 Received-SPF: pass receiver=logan.com; client-ip=205.152.59.71; envelope-from=sladerj@bellsouth.net Received: from JSLADE ([209.215.55.133]) by imf23aec.mail.bellsouth.net (InterMail vM.5.01.06.11 201-253-122-130-111-20040605) with ESMTP id <20040918120627.EQN13060.imf23aec.mail.bellsouth.net@JSLADE> for ; Sat, 18 Sep 2004 08:06:27 -0400 From: "John Slade" To: "Rotary motors in aircraft" Subject: RE: [FlyRotary] Re: Quiet Date: Sat, 18 Sep 2004 08:06:27 -0400 Message-ID: MIME-Version: 1.0 Content-Type: multipart/alternative; boundary="----=_NextPart_000_0052_01C49D56.66290890" X-Priority: 3 (Normal) X-MSMail-Priority: Normal X-Mailer: Microsoft Outlook IMO, Build 9.0.2416 (9.0.2910.0) X-MIMEOLE: Produced By Microsoft MimeOLE V6.00.2800.1409 Importance: Normal In-Reply-To: This is a multi-part message in MIME format. ------=_NextPart_000_0052_01C49D56.66290890 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Thanks for the comments, Lynn. Good stuff, but you sorta missed the point. This is not a planned project, it's a flying airplane so the question changes from "how do I do it" to "how do I use it". Its a street ported 2 rotor. The 6.5B single rotor comment was reference to the fact that I have a (hopefully short term) setup problem of some sort. > The weekend drifter kids are getting 700 HP at the rear wheels on their 95 > RX-7s. In too many cases, engine life is counted in minutes. I'm looking for 280HP max > Operating so close to the edge of the envelope seems to me to be in > opposition to what you want from an aircraft engine. Only if you don't know where the edge is. > There are just very few people that ever get > into the air without some difficulty in oil or water cooling, or both. No problems in this area in 8 hrs of flying. > I would contact an expert in turbocharging and have him select I have the mods described in http://www.turbonetics.com.au/ > I would design the system to be incapable of more than a > specific amount of boost, and then build in a popoff valve just above that > value just in case. I have a Blow Off Valve in the intake set for about 10 PSI > A scat tube to blow on the central (bearing area) part of the turbo > would be real good for long bearing life. Interesting point. My exhaust augmentation sucks cold air past the turbo so this should help. The turbo has both water and oil cooling. > Water temp 180 at cruise hot day climb 200. Oil temp 160 (ideal) > at cruise, 180 is OK, 210 hot day climb. Power goes down above 160 oil temp. I've told by another well respected rotary expert that the REW is designed to run at 203 - 212F, that oil temp should be kept below 240F, and should never regularly go over 248F. Everywhere I go I hear different numbers for these limits. I'm using 5-30 Castrol Synthetic. Thanks again, John ------=_NextPart_000_0052_01C49D56.66290890 Content-Type: text/html; charset="us-ascii" Content-Transfer-Encoding: quoted-printable

Thanks for the comments, Lynn. Good stuff, but = you sorta=20 missed the point. This is not a planned project, it's a flying airplane = so the=20 question changes from "how do I do it" to "how do I use it". Its a = street ported=20 2 rotor. The 6.5B single rotor comment was reference to the fact that I = have a=20 (hopefully short term) setup problem of some = sort.

> The=20 weekend drifter kids are getting 700 HP at the rear wheels on their = 95
>=20 RX-7s. In too many cases, engine life is counted in minutes.
I'm looking for 280HP max

> Operating = so close to=20 the edge of the envelope seems to me to be in
> opposition to what = you=20 want from an aircraft engine.
Only if you don't = know=20 where the edge is.

> There are just very few people = that ever=20 get
> into the air without some difficulty in oil or water = cooling, or=20 both.
No problems in this area in 8 hrs of=20 flying.

> I would contact an expert in turbocharging = and have=20 him select
I have the mods described in = http://www.turbonetics.com.au/

> I = would=20 design the system to be incapable of more than a
> specific amount = of=20 boost, and then build in a popoff valve just above that
> value = just in=20 case.
I have a Blow Off Valve in the intake set = for about=20 10 PSI

> A scat tube to blow on the central (bearing = area) part=20 of the turbo
> would be real good for long bearing life.
Interesting point. My exhaust augmentation sucks cold = air past the=20 turbo so this should help. The turbo has both water and oil=20 cooling.

> Water temp 180 at cruise hot day climb 200. = Oil temp=20 160 (ideal)
> at cruise, 180 is OK, 210 hot day climb. Power goes = down=20 above 160 oil temp.
I've told by another well = respected=20 rotary expert that the REW is designed to run at 203 - 212F, that oil = temp=20 should be kept below 240F, and should never regularly go over 248F. = Everywhere I=20 go I hear different numbers for these limits. I'm using 5-30 Castrol=20 Synthetic.

Thanks again,

John

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