Return-Path: Received: from imf17aec.mail.bellsouth.net ([205.152.59.65] verified) by logan.com (CommuniGate Pro SMTP 4.3c2) with ESMTP id 761080 for flyrotary@lancaironline.net; Sat, 26 Feb 2005 21:20:42 -0500 Received-SPF: pass receiver=logan.com; client-ip=205.152.59.65; envelope-from=sladerj@bellsouth.net Received: from JSLADE ([65.2.91.8]) by imf17aec.mail.bellsouth.net (InterMail vM.5.01.06.11 201-253-122-130-111-20040605) with ESMTP id <20050227021956.SBZ2031.imf17aec.mail.bellsouth.net@JSLADE> for ; Sat, 26 Feb 2005 21:19:56 -0500 From: "John Slade" To: "Rotary motors in aircraft" Subject: A little down on power Date: Sat, 26 Feb 2005 21:19:54 -0500 Message-ID: MIME-Version: 1.0 Content-Type: multipart/alternative; boundary="----=_NextPart_000_01C9_01C51C48.EA4487F0" 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_01C9_01C51C48.EA4487F0 Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: 7bit I wonder if any of you expert Wanklers could comment on my latest issue..... My turbo REW engine now starts almost instantly and runs very smoothly at all rpm ranges. There's little if any soot on the prop so long as I don't run too rich on take-off. My static used to be 4050. Lately it's been in the 3900's with 46 MAP. More MAP (I tried briefly up to 50 today) doesn't do a damn thing. There's plenty of power to take-off and climb, but not as much as I had way back when before a thousand changes because of which I can't pinpoint when the power changed. Could be fairly recent (in terms of hours) and after the new turbo was fitted. Could be partially a result of the hi-flow turbo, but I think not all. I've never been able to get any more power past a certain throttle position. Its as though I get to a certain point, then more throttle and boost just makes it shudder a bit, so I back off. That "there aint no more" point on the throttle seems to be coming back toward the idle :) I've also noticed that shutting off the primary injectors almost kills the engine. If I struggle with it I CAN keep it running, but only just. I'm currently flying on 87 Octane. Could this be impacting my ability to produce power this much? I'm working my way through the possible octanes to see how she behaves so as not to get caught out later. The next tankful will be 91, then 100LL. I've tried clean (not new) plugs. That's my next experiment. Any other thoughts or suggestions welcome. John (flying, but not climbing as fast as I'd like) ------=_NextPart_000_01C9_01C51C48.EA4487F0 Content-Type: text/html; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable

I = wonder if any of=20 you expert Wanklers could comment on my latest = issue.....

My = turbo=20 REW engine now starts almost instantly and runs very smoothly at = all rpm=20 ranges. There's little if any soot on the prop so long as I don't run = too rich=20 on take-off. My static used to be 4050. Lately it's been in the = 3900's with=20 46 MAP. More MAP (I tried briefly up to 50 today) doesn't do a damn = thing.=20 There's plenty of power to take-off and climb, but not as much as I had = way back=20 when before a thousand changes because of which I can't pinpoint when = the power=20 changed. Could be fairly recent (in terms of hours) and after the = new turbo=20 was fitted. Could be partially a result of the hi-flow turbo, but I = think not=20 all.

I've = never been able=20 to get any more power past a certain throttle position. Its as though I = get to a=20 certain point, then more throttle and boost just makes it shudder a bit, = so I=20 back off. That "there aint no more" point on the throttle seems to = be=20 coming back toward the idle :) I've also noticed that shutting off the = primary=20 injectors almost kills the engine. If I struggle with it I CAN keep it = running,=20 but only just.

I'm = currently flying=20 on 87 Octane. Could this be impacting my ability to produce power = this=20 much? I'm=20 working my way through the possible octanes to see how she behaves so as = not to=20 get caught out later. The next tankful will be 91, then 100LL.=20 I've tried=20 clean (not new) plugs. That's my next experiment. Any other thoughts or=20 suggestions welcome.

John = (flying, but=20 not climbing as fast as I'd like)

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