X-Virus-Scanned: clean according to Sophos on Logan.com Return-Path: Received: from fed1rmmtao105.cox.net ([68.230.241.41] verified) by logan.com (CommuniGate Pro SMTP 5.3.11) with ESMTP id 4662660 for flyrotary@lancaironline.net; Mon, 03 Jan 2011 14:38:13 -0500 Received-SPF: none receiver=logan.com; client-ip=68.230.241.41; envelope-from=alventures@cox.net Received: from fed1rmimpo02.cox.net ([70.169.32.72]) by fed1rmmtao105.cox.net (InterMail vM.8.01.03.00 201-2260-125-20100507) with ESMTP id <20110103193737.GTPL14403.fed1rmmtao105.cox.net@fed1rmimpo02.cox.net> for ; Mon, 3 Jan 2011 14:37:37 -0500 Received: from BigAl ([72.199.216.14]) by fed1rmimpo02.cox.net with bizsmtp id r7dc1f00q0KDB3c047dcNH; Mon, 03 Jan 2011 14:37:37 -0500 X-VR-Score: 0.00 X-Authority-Analysis: v=1.1 cv=ZH8U2ZeJmbD9OoBczrItEMYePoWmZ9qoR2uYc095tHo= c=1 sm=1 a=svIKFco9tjcA:10 a=TPvrVRyicAsl4VeEYn0L5g==:17 a=Ia-xEzejAAAA:8 a=HZJGGiqLAAAA:8 a=s1I-Y6CqAAAA:8 a=1XWaLZrsAAAA:8 a=vLcsLK-AWnOSPeBrePwA:9 a=8Kj8a2mTbYkYsdXN1v8DInU7hewA:4 a=CjuIK1q_8ugA:10 a=TbTuEfNj71wA:10 a=EzXvWhQp4_cA:10 a=HeoGohOdMD0A:10 a=YDDLot2eMAOLbmgM:21 a=09v208YF2NuJLVOu:21 a=AhlFC5Ach82_UXGVCBsA:9 a=7MwHoTsR6qvsj_1Xq0IA:7 a=maj7Hqgh_WuZMu7NLu7XIXUA_z0A:4 a=ZczlwXjsB7xPp_3q:21 a=nnwkORzfwUxEKQX6:21 a=TPvrVRyicAsl4VeEYn0L5g==:117 X-CM-Score: 0.00 Authentication-Results: cox.net; none From: "Al Gietzen" To: "'Rotary motors in aircraft'" Subject: RE: [FlyRotary] Re: GM Coil Comparison Date: Mon, 3 Jan 2011 11:38:42 -0800 Message-ID: MIME-Version: 1.0 Content-Type: multipart/alternative; boundary="----=_NextPart_000_001E_01CBAB3A.C5BBC060" X-Priority: 3 (Normal) X-MSMail-Priority: Normal X-Mailer: Microsoft Outlook, Build 10.0.6863 Importance: Normal Thread-Index: AcurYSfpJFKpEolDQuKpOhD/AE/ZwwAGkmJA X-MimeOLE: Produced By Microsoft MimeOLE V6.00.2900.5994 In-Reply-To: This is a multi-part message in MIME format. ------=_NextPart_000_001E_01CBAB3A.C5BBC060 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: quoted-printable Aside from the higher spark current from the D585s eroding the sparkplug electrodes more quickly; do we have evidence that it will, in fact, = improve performance? Perhaps it is a cure for SAG. =20 BTW; my 6 D581 coils (Mounted atop my 20B) have been in use since my = first engine start back in about 2001. They have survived many hours of = ground test runs where cowl temps exceeded 150F (at times I'm sure reached 190+ = for short periods); and 200 fight hours with nary a single failure. In-cowl temps are typically about 150 during climb-out; and generally 120-140 = during cruise. =20 =20 Perhaps it helps that they get plenty of air flow (during flight) being pretty much in blast from the rad exit. I generally run the rad aux fan = for awhile after shutdown; but I'd guess high temp is less of an issue when = they are not operating. =20 Al =20 -----Original Message----- From: Rotary motors in aircraft [mailto:flyrotary@lancaironline.net] On Behalf Of Tracy Sent: Monday, January 03, 2011 8:13 AM To: Rotary motors in aircraft Subject: [FlyRotary] Re: GM Coil Comparison =20 I highly recommend the air cooled enclosure as Steve Boese (and I) use. This is especially important on the D581 and the stock RX-8 Renesis = coils. The Renesis coils have a fairly high failure rate even on the car. The D581 would only last a few hours at 150 F but I have about 250 hours on = them with the airbox at 120F. Don't forget to do the coil disable test to check for failed coils prior = to every flight. Tracy On Mon, Jan 3, 2011 at 10:53 AM, Steven W. Boese = wrote: I have about 100 hours on D585 coils and have had no problems with them = so far. The temperature in their airblasted enclosure is usually less than = 100 degrees in flight and has gotten up to 120 degrees during taxi. =20 Steve Boese =20 From: Rotary motors in aircraft [mailto:flyrotary@lancaironline.net] On Behalf Of Tracy Sent: Monday, January 03, 2011 8:41 AM To: Rotary motors in aircraft Subject: [FlyRotary] Re: GM Coil Comparison =20 I have a set of the D585 coils but have only evaluated them on the bench = for compatibility with the EC2/3 (they are). I do know that the previous version of the truck coils (D581) are not as reliable as the D580 (Corvette) coils. Tracy On Sun, Jan 2, 2011 at 2:16 PM, Kelly Troyer wrote: Happy New Year Group, =20 A little info regarding the various GM ignition coils that many = of us use on our Rotary engines with Tracy's EC2 and EC3 boxes that I thought might be of interest to those that have not seen it before.............Tracy would like your comments on the the apparently big performance difference between the LS1 verses the LS2 Truck coils and if an upgrade would be worth the $$ especially for those of us that have or plan on Turbocharging in light of the higher combustion chamber pressures.......=20 =20 =20 http://www.megamanual.com/seq/coils.htm#ls1 =20 http://video.google.com/videoplay?docid=3D-6218245369765754251 = &hl=3Den# =20 Kelly Troyer "DYKE DELTA JD2" (Eventually) "13B ROTARY"_ Engine "RWS"_RD1C/EC2/EM2 "MISTRAL"_Backplate/Oil Manifold "TURBONETICS"_TO4E50 Turbo =20 =20 ------=_NextPart_000_001E_01CBAB3A.C5BBC060 Content-Type: text/html; charset="us-ascii" Content-Transfer-Encoding: quoted-printable

Aside from the higher spark = current from the D585s eroding the sparkplug electrodes more quickly; do we have = evidence that it will, in fact, improve performance? Perhaps it is a cure for = SAG.

 

BTW; my 6 D581 coils (Mounted = atop my 20B) have been in use since my first engine start back in about 2001. =  They have survived many hours of ground test runs where cowl temps exceeded = 150F (at times I’m sure reached 190+ for short periods); and 200 fight = hours with nary a single failure. In-cowl temps are typically about 150 during = climb-out; and generally 120-140 during cruise.  

 

Perhaps it helps that they get = plenty of air flow (during flight) being pretty much in blast from the rad = exit.  I generally run the rad aux fan for awhile after shutdown; but I’d = guess high temp is less of an issue when they are not = operating.

 

Al

 

-----Original = Message-----
From: Rotary motors in = aircraft [mailto:flyrotary@lancaironline.net] On Behalf Of Tracy
Sent: Monday, January 03, = 2011 8:13 AM
To: Rotary motors in = aircraft
Subject: [FlyRotary] Re: = GM Coil Comparison

 

I highly recommend the air cooled enclosure as Steve Boese (and I) = use.  This is especially important on the D581 and the stock RX-8 Renesis coils.  The Renesis coils have a fairly high failure rate even on = the car.   The D581 would only last a few hours at 150 F but I = have about 250 hours on them with the airbox at 120F.

Don't forget to do the coil disable test to check for failed coils prior = to every flight.

Tracy

On Mon, Jan 3, 2011 at 10:53 AM, Steven W. = Boese <SBoese@uwyo.edu> = wrote:

I have about 100 hours on D585 coils and have had no problems with them so = far.  The temperature in their airblasted enclosure is usually less than 100 = degrees in flight and has gotten up to 120 degrees during = taxi.

 

Steve Boese

 

From: Rotary motors in aircraft = [mailto:flyrotary@lancaironline.net] On Behalf Of Tracy
Sent: Monday, January 03, = 2011 8:41 AM
To: Rotary motors in = aircraft
Subject: [FlyRotary] Re: = GM Coil Comparison

 

I have a set = of the D585 coils but have only evaluated them on the bench for compatibility with = the EC2/3  (they are).

I do know that the previous version of the truck coils (D581) are not as reliable as the D580 (Corvette) coils.

Tracy

On Sun, Jan 2, 2011 at 2:16 PM, Kelly Troyer = <keltro@att.net> = wrote:

Happy New Year Group,

 

     &nbs= p;  A little info regarding the various GM ignition coils that many of us = use on our

Rotary engines with Tracy's EC2 and EC3 boxes that I thought might be of = interest

to = those that have not seen it before.............Tracy would like your comments on = the

the apparently big performance difference between the LS1 verses the LS2 = Truck

coils and if an upgrade would be worth the $$ especially for those of us that = have

or = plan on Turbocharging in light of the higher combustion chamber = pressures....... 

 

 

 


 

Kelly Troyer
"DYKE DELTA = JD2" (Eventually)

"13B ROTARY"_ = Engine
"RWS"_RD1C/EC2/EM2
"MISTRAL"_Backplate/Oil Manifold

"TURBONETICS"_TO4E50 = Turbo

 

 

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