X-Virus-Scanned: clean according to Sophos on Logan.com X-SpamCatcher-Score: 30 [X] Return-Path: Received: from fed1rmmtao106.cox.net ([68.230.241.40] verified) by logan.com (CommuniGate Pro SMTP 5.1.6) with ESMTP id 1835006 for flyrotary@lancaironline.net; Tue, 13 Feb 2007 10:16:37 -0500 Received-SPF: none receiver=logan.com; client-ip=68.230.241.40; envelope-from=alventures@cox.net Received: from fed1rmimpo02.cox.net ([70.169.32.72]) by fed1rmmtao106.cox.net (InterMail vM.7.05.02.00 201-2174-114-20060621) with ESMTP id <20070213151544.GLAO21704.fed1rmmtao106.cox.net@fed1rmimpo02.cox.net> for ; Tue, 13 Feb 2007 10:15:44 -0500 Received: from BigAl ([72.192.132.90]) by fed1rmimpo02.cox.net with bizsmtp id P3Fk1W00q1xAn3c0000000; Tue, 13 Feb 2007 10:15:45 -0500 From: "Al Gietzen" To: "'Rotary motors in aircraft'" Subject: RE: [FlyRotary] Second engine start Date: Tue, 13 Feb 2007 07:15:46 -0800 Message-ID: <000001c74f81$d630db10$6400a8c0@BigAl> MIME-Version: 1.0 Content-Type: multipart/alternative; boundary="----=_NextPart_000_0001_01C74F3E.C80FE500" X-Priority: 3 (Normal) X-MSMail-Priority: Normal X-Mailer: Microsoft Outlook, Build 10.0.6626 Importance: Normal In-Reply-To: X-MimeOLE: Produced By Microsoft MimeOLE V6.00.2900.3028 This is a multi-part message in MIME format. ------=_NextPart_000_0001_01C74F3E.C80FE500 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: quoted-printable =20 We discovered that the 10A fuse on the ignition circuit providing power=20 to the igniters had blown. After replacing the fuse, we were getting=20 flashes on the timing light! I am concerned about why the fuse might=20 have blown, but so far, it is holding up. =20 Bill; I don't recall your setup, but with the EC2 and LS1 coils there will be spikes that will blow a standard 10A fuse. You can try a 10A 'slow = blow', but I would suggest using 15A, preferably a SB. I'm assuming you have at least 16 or 18 AWG wire on the power circuit. And we don't want to = re-open the discussion of fuses vs circuit breakers.=20 =20 Now the engine starts, but only seems to want to run at high revs. It=20 also seems to run better when cold start is on. I have not figured out=20 if this is just because the engine is cold, or if the condition is=20 chronic. The temp outside at the time was in the low 70s. =20 Do you have a prop on? Sounds like the mixture setting is too lean, and with the 'cold start' on the mixture is doubled and too rich, accounting = for the flames. Although with only a 3" header, you might see flames even = when the mixture is correct. =20 That 3" straight out exhaust note is a tad harsh! especially=20 when the engine only wants to run at high revs! =20 I think you'll want to consider getting some sort of exhaust system on = there to protect your neighbors:-). =20 Al G =20 =20 ------=_NextPart_000_0001_01C74F3E.C80FE500 Content-Type: text/html; charset="us-ascii" Content-Transfer-Encoding: quoted-printable

We discovered that the 10A fuse on the ignition circuit providing power =

to the igniters had blown. After replacing the fuse, we were getting =

flashes on the timing light! I am concerned about why the fuse might =

have blown, but so far, it is holding up.

Bill;

I don’t = recall your setup, but with the EC2 and LS1 coils there will be spikes that = will blow a standard 10A fuse. You can try a 10A ‘slow blow’, = but I would suggest using 15A, preferably a SB. I’m assuming you have at least = 16 or 18 AWG wire on the power circuit. And we don’t want to = re-open the discussion of fuses vs circuit breakers.

Now the engine starts, but only seems to want to run at high revs. It =

also seems to run better when cold start is on. I have not figured out =

if this is just because the engine is cold, or if the condition is =

chronic. The temp outside at the time was in the low 70s.

Do you have a = prop on? Sounds like the mixture setting is too lean, and with the ‘cold = start’ on the mixture is doubled and too rich, accounting for the flames. = Although with only a 3” header, you might see flames even when the mixture = is correct.

That 3" straight out exhaust note is a tad harsh! especially =

when the engine only wants to run at high revs!

I think = you’ll want to consider getting some sort of exhaust system on there to protect = your neighborsJ.

Al = G

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