Return-Path: Received: from mail.tsisp.com ([65.23.108.44] verified) by logan.com (CommuniGate Pro SMTP 4.2.1) with ESMTP-TLS id 404577 for flyrotary@lancaironline.net; Thu, 09 Sep 2004 17:50:42 -0400 Received-SPF: none receiver=logan.com; client-ip=65.23.108.44; envelope-from=steve@tsisp.com Received: from your6oef4glwm9 by mail.tsisp.com (Technical Support Inc.) with SMTP id CQA74584 for ; Thu, 09 Sep 2004 17:50:12 -0400 Reply-To: From: "mail" To: "Rotary motors in aircraft" Subject: RE: [FlyRotary] First engine run with Monster Prop Date: Thu, 9 Sep 2004 17:52:55 -0400 Message-ID: MIME-Version: 1.0 Content-Type: multipart/alternative; boundary="----=_NextPart_000_0183_01C49695.D5E27C60" 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 In-Reply-To: Importance: Normal This is a multi-part message in MIME format. ------=_NextPart_000_0183_01C49695.D5E27C60 Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: 7bit Ed, Congratulations on the successful run. Sounds pretty good. It will be interesting to see what kind of climb rate and cruise performance you get with the new setup. Steve Brooks -----Original Message----- From: Rotary motors in aircraft [mailto:flyrotary@lancaironline.net]On Behalf Of Ed Anderson Sent: Thursday, September 09, 2004 3:08 PM To: Rotary motors in aircraft Subject: [FlyRotary] First engine run with Monster Prop Ok, got out today and fired up the engine with the new prop and gear box. This is the 76x88 inch prop that is 2" longer than the one Tracy and Rusty have on their birds. The static was 5400 rpm at 28.75" with ambient manifold pressure reading 29.75" (as best I interpolated). OAT was 87F. Idle was considerably smoother whether due to increased mass of larger prop, new gear box or both. I did notice the 2.85 has considerably less gear lash than the 2.17. I took it for a quick taxi up and down our 35' wide runway and notice that the "P" effect was considerable at full power. It felt like someone was taking the nose of the aircraft and forcefully shoving it to the left. Rudder with Nose wheel helping kept things under control without any problem, but I think my first full power takeoffs will be where they have those 100 -150' wide runways - just to be safe.{:>). Subjectively seemed to have considerable more acceleration but will not do any definitive test on this runway. Temperatures were normal. After extended runup the oil temps approached 190F and coolant temp got up to 210F this is what I would normally see. Considering that the static rpm was the same as my old gearbox and prop, it likely I was producing the same HP and therefore would not expect major difference. The larger prop did not seem to interfere with the cooling airflow - at least on the ground. The RPM is a bit less than I had hoped for - but may just indicate that the 2" increased diameter over the ones flying now (74x88) is a bit more prop than is optimum. I will fly with it and record the data so that Performance Propellers will know how much to trim when I ship it back. Hope to get the spinner painted over the weekend and go flying early next week. Ed Ed Anderson RV-6A N494BW Rotary Powered Matthews, NC --- Outgoing mail is certified Virus Free. Checked by AVG anti-virus system (http://www.grisoft.com). Version: 6.0.714 / Virus Database: 470 - Release Date: 7/2/2004 ------=_NextPart_000_0183_01C49695.D5E27C60 Content-Type: text/html; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable

Ed,

Congratulations on the successful run. Sounds pretty = good. It=20 will be interesting to see what kind of climb rate and cruise = performance you=20 get with the new setup.

Steve=20 Brooks

-----Original Message-----
From: Rotary motors in = aircraft=20 [mailto:flyrotary@lancaironline.net]On Behalf Of Ed=20 Anderson
Sent: Thursday, September 09, 2004 3:08 = PM
To:=20 Rotary motors in aircraft
Subject: [FlyRotary] First engine = run with=20 Monster Prop

Ok, got out today and fired up the = engine with=20 the new prop and gear box. This is the 76x88 inch prop that is = 2" longer=20 than the one Tracy and Rusty have on their birds. The static was = 5400=20 rpm at 28.75" with ambient manifold pressure reading 29.75" (as best I = interpolated). OAT was 87F. Idle was considerably smoother = whether=20 due to increased mass of larger prop, new gear box or both. I = did notice=20 the 2.85 has considerably less gear lash than the 2.17.

I took it for a quick taxi up = and down our=20 35' wide runway and notice that the "P" effect was considerable at = full=20 power. It felt like someone was taking the nose of the aircraft = and=20 forcefully shoving it to the left. Rudder with Nose wheel = helping kept=20 things under control without any problem, but I think my first full = power=20 takeoffs will be where they have those 100 -150' wide runways - just = to be=20 safe.{:>). Subjectively seemed to have considerable more = acceleration but will not do any definitive test on this = runway.

Temperatures were normal. After = extended=20 runup the oil temps approached 190F and coolant temp got up to 210F = this is=20 what I would normally see. Considering that the static rpm was = the same=20 as my old gearbox and prop, it likely I was producing the same HP and=20 therefore would not expect major difference. The larger prop did = not=20 seem to interfere with the cooling airflow - at least on the=20 ground.

The RPM is a bit less than I had = hoped for=20 - but may just indicate that the 2" increased diameter over the = ones=20 flying now (74x88) is a bit more prop than is optimum. I will = fly with=20 it and record the data so that Performance Propellers will know how = much to=20 trim when I ship it back.

Hope to get the spinner painted over = the weekend=20 and go flying early next week.

Ed

Ed Anderson
RV-6A N494BW Rotary=20 Powered
Matthews, NC

------=_NextPart_000_0183_01C49695.D5E27C60--