X-Virus-Scanned: clean according to Sophos on Logan.com Return-Path: Received: from wr-out-0506.google.com ([64.233.184.226] verified) by logan.com (CommuniGate Pro SMTP 5.2c4) with ESMTP id 2629257 for flyrotary@lancaironline.net; Thu, 03 Jan 2008 10:47:55 -0500 Received-SPF: pass receiver=logan.com; client-ip=64.233.184.226; envelope-from=msteitle@gmail.com Received: by wr-out-0506.google.com with SMTP id 70so185907wra.7 for ; Thu, 03 Jan 2008 07:47:16 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=gamma; h=domainkey-signature:received:received:message-id:date:from:to:subject:in-reply-to:mime-version:content-type:references; bh=Q1+iVRkQPi8dRAD1/7S/FRz6ytlBV0NI6oljo3XBsuY=; b=ZC3O3qzZ5Bytr0ECjAXG/07lopiA9QiIM5sUbMS8FBwSCdQQYJcQOwhFWVPg4rTaJQvq/dB4G9CUZCb8HXQERtdTSVLUULnK1pJ2I3p5FZJsJGxHSQhDwx45VBqE1DD0O3WPCZ4uRDWJDEpYgP1tlOxeeeJ6sSOBZnwEbL+LsCk= DomainKey-Signature: a=rsa-sha1; c=nofws; d=gmail.com; s=gamma; h=message-id:date:from:to:subject:in-reply-to:mime-version:content-type:references; b=HzAsBWgQvL5taACCcGxGK722lFfyEXZLWErJmWNYn1gUdYZlnQxkO0QF+eFAOWMTNxXXtHyRC3GHnLept6rv85ECi7aKiz1W51+GQMvIwBMlVo2ugBf1sMMvfOFaXxJzsihvdKoYEvKzrtT1e0yfNCmBKZew2OWxnRGBE5dHW00= Received: by 10.150.53.2 with SMTP id b2mr4205263yba.126.1199375236807; Thu, 03 Jan 2008 07:47:16 -0800 (PST) Received: by 10.150.146.16 with HTTP; Thu, 3 Jan 2008 07:47:16 -0800 (PST) Message-ID: <5cf132c0801030747o36751938hf977206280c1faca@mail.gmail.com> Date: Thu, 3 Jan 2008 09:47:16 -0600 From: "Mark Steitle" To: "Rotary motors in aircraft" Subject: Re: [FlyRotary] Renesis CAS gap.... was flooding In-Reply-To: MIME-Version: 1.0 Content-Type: multipart/alternative; boundary="----=_Part_14550_23693747.1199375236788" References: ------=_Part_14550_23693747.1199375236788 Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: 7bit Content-Disposition: inline Maybe someone with a Renesis can check the gap for Don to use as a reference. What I know for sure is that the engine would not even start when the gap was greater than .035. Metal filings can also cause problems with the CAS signal. Mark On Jan 3, 2008 8:35 AM, Bobby J. Hughes wrote: > Don, > > It could be something else, but my plan is to grind the flange down to a > gap of .020 and try it. It will be a bitch to get to. > > *I would not grind anything yet*. The stock location is correct as Dennis > and Tracy are using it with no modifications. There is a quirk with the EC2 > and the Renesis CAS that may require a couple of resistors and a zener diode > at higher rpm ranges. But I believe Tracy has an upgrade to correct the > issue. It does not effect the engine at start or below 4500 rpms if I > remember correctly. Mark Steitle fabricated a Renesis CAS bracket and > adopted it for his 20B so it is an entirely different animal. The 20b does > not have a place to bolt up the CAS like the Renesis. > > One thing you can check is to make sure the CAS has not collected any > metal dust or shavings as that will have an effect on the signal. > > Bobby > > ------------------------------ > *From:* Rotary motors in aircraft [mailto:flyrotary@lancaironline.net] *On > Behalf Of *Don Wallker > *Sent:* Sunday, January 13, 2008 9:18 PM > *To:* Rotary motors in aircraft > *Subject:* [FlyRotary] flooding > > I made it out to the airport today, soldered up the CAS and installed > it. Before I cranked it over, I put it in mode 8 and fired it off. The > usual nice blue sparks. Then set it to mode 0 and cranked with the plugs > out and pumps/inj off. No spark. Cranked and looked again. Every so often > there would be a weak spark or 3, but most of the time, nothing. So little > or no spark. I measured the gap between the CAS and the wheel and I get > between .045 and .050 (I don't have the right feeler gauges). This > contrasts with Mark having to move his CAS to .020 to make it work. The > flange that the CAS sets on is part of the cast casing and is machined flat > where the CAS is bolted in. It looks like this sould be the correct setting > and would never have concidered this to be the problem (still don't know for > sure if it is) if Mark hadn't mentioned it. Have any of you Renesis people > run into this? Some possibilities are that it needs a smaller gap for the > EC-2. or that this being a "grey market" engine, they let the builder figure > it out the spacing. It could be something else, but my plan is to grind the > flange down to a gap of .020 and try it. It will be a bitch to get to. I > can add spacers if I need to move it back out. Anyone else have any > suggestions as what else might be the problem? Bill, Tracy and Dennis, did > you have this problem with spacing on the Renesis, or did you just install > the stock CAS and go? I checked the factory Manual on CD and they have no > specs on the gap. BTW no RPM display at these low cranking speeds. Lynn, I > am running a stock 13b autotrans starter. It cranks well, until the battery > runs down. Yes, I have my 12 lb Catto prop installed. I put a little oil > into the plugs holes before cranking. > Dennis, I'll put that inverted drain valve at the top of the radiator > housing this weekend. I also have 2 air purge lines, one running from the > rear top of the engine and the other from the radiator, radiator cap, both > going up to the surge tank to purge air out of the system. Bob, I think > your harnesses are fine! Picked up some Marvel MM oil for squirting into > the plug holes. Bill, I have been cleaning my plugs with carb cleaner, then > blowing them dry. If that doesn't work, I'll use the rice hulls. I will > attempt to fire it off once the urathane sets and I get the flange cut > down. Guys, thanks for all the suggestions! I'll keep you posted. > > Don Walker > ------=_Part_14550_23693747.1199375236788 Content-Type: text/html; charset=ISO-8859-1 Content-Transfer-Encoding: 7bit Content-Disposition: inline Maybe someone with a Renesis can check the gap for Don to use as a reference.  What I know for sure is that the engine would not even start when the gap was greater than .035.  Metal filings can also cause problems with the CAS signal. 

Mark

On Jan 3, 2008 8:35 AM, Bobby J. Hughes <bhughes@qnsi.net> wrote:
Don,
 
It could be something else, but my plan is to grind the flange down to a gap of .020 and try it.  It will be a bitch to get to. 
 
I would not grind anything yet. The stock location is correct as Dennis and Tracy are using it with no modifications. There is a quirk with the EC2 and the Renesis CAS that may require a couple of resistors and a zener diode at higher rpm ranges. But I believe Tracy has an upgrade to correct the issue. It does not effect the engine at start or below 4500 rpms if I remember correctly. Mark Steitle fabricated a Renesis CAS bracket and adopted it for his 20B so it is an entirely different animal. The 20b does not have a place to bolt up the CAS like the Renesis.
 
One thing you can check is to make sure the CAS has  not collected any metal dust or shavings as that will have an effect on the signal.
 
Bobby

From: Rotary motors in aircraft [mailto:flyrotary@lancaironline.net] On Behalf Of Don Wallker
Sent: Sunday, January 13, 2008 9:18 PM
To: Rotary motors in aircraft
Subject: [FlyRotary] flooding

I made it out to the airport today, soldered up the CAS and installed it.  Before I cranked it over, I put it in mode 8 and fired it off.  The usual nice blue sparks.  Then set it to mode 0 and cranked with the plugs out and pumps/inj off.  No spark.  Cranked and looked again.  Every so often there would be a weak spark or 3, but most of the time, nothing.  So little or no spark.  I measured the gap between the CAS and the wheel and I get between .045 and .050  (I don't have the right feeler gauges).  This contrasts with Mark having to move his CAS to .020  to make it work.  The flange that the CAS sets on is part of the cast casing and is machined flat where the CAS is bolted in.  It looks like this sould be the correct setting and would never have concidered this to be the problem (still don't know for sure if it is) if Mark hadn't mentioned it.  Have any of you Renesis people run into this?  Some possibilities are that it needs a smaller gap for the EC-2. or that this being a "grey market" engine, they let the builder figure it out the spacing.  It could be something else, but my plan is to grind the flange down to a gap of .020 and try it.  It will be a bitch to get to.  I can add spacers if I need to move it back out.  Anyone else have any suggestions as what else might be the problem?  Bill, Tracy and Dennis, did you have this problem with spacing on the Renesis, or did you just install the stock CAS and go?  I checked the factory Manual on CD and they have no specs on the gap.  BTW no RPM display at these low cranking speeds.  Lynn, I am running a stock 13b autotrans starter.  It cranks well, until the battery runs down.  Yes, I have my 12 lb Catto prop installed.  I put a little oil into the plugs holes before cranking. 
Dennis, I'll put that inverted drain valve at the top of the radiator housing this weekend.  I also have 2 air purge lines, one running from the rear top of the engine and the other from the radiator, radiator cap, both going up to the surge tank to purge air out of the system.  Bob, I think your harnesses are fine!  Picked up some Marvel MM oil for squirting into the plug holes.  Bill, I have been cleaning my plugs with carb cleaner, then blowing them dry.  If that doesn't work, I'll use the rice hulls. I will attempt to fire it off once the urathane sets and I get the flange cut down.  Guys, thanks for all the suggestions!  I'll keep you posted.
 
Don Walker

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