X-Virus-Scanned: clean according to Sophos on Logan.com Return-Path: Received: from mail-iy0-f180.google.com ([209.85.210.180] verified) by logan.com (CommuniGate Pro SMTP 5.3.11) with ESMTP id 4662724 for flyrotary@lancaironline.net; Mon, 03 Jan 2011 15:36:29 -0500 Received-SPF: pass receiver=logan.com; client-ip=209.85.210.180; envelope-from=wdleonard@gmail.com Received: by iyi12 with SMTP id 12so16143661iyi.25 for ; Mon, 03 Jan 2011 12:35:53 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=gamma; h=domainkey-signature:mime-version:received:received:in-reply-to :references:date:message-id:subject:from:to:content-type; bh=tNcKFyLLDBTItXenNoRblfsvf73egTa5FgUnSjgcwEc=; b=JcklqcomQQ3dLTjI7yQFR7uwejxwm5+y5Gr1tn2dxanehLcOj3N9zssqtQMdW0cXU2 bkF2L7qNSLbUA/5zMe+zP0LX2LiUkNN4SKSgcd6t8RvD456mREwJO6Fnz8OSzYnUnkfv 0lOXTKtEge5FoQNgJoewLVwnwuyPXXBmcxuVA= DomainKey-Signature: a=rsa-sha1; c=nofws; d=gmail.com; s=gamma; h=mime-version:in-reply-to:references:date:message-id:subject:from:to :content-type; b=Fysqv50XvwEbdefDSjNfeM4aTA9eTFSv9huPnVHnHXeiNNtBbO0L3u88+ALa7KAU+a ODXQqyZHmph/uFS+soMAuc+ex1AHRJZu3joS7Ako8obf/9vic2fqhmgWHqeodIVmBN7S oGUSDt5ohCxSOlp2Ao6PGmSzDPr5k5FM1t0sM= MIME-Version: 1.0 Received: by 10.231.20.68 with SMTP id e4mr20820289ibb.194.1294086952961; Mon, 03 Jan 2011 12:35:52 -0800 (PST) Received: by 10.231.169.213 with HTTP; Mon, 3 Jan 2011 12:35:52 -0800 (PST) In-Reply-To: References: Date: Mon, 3 Jan 2011 12:35:52 -0800 Message-ID: Subject: Re: [FlyRotary] Re: GM Coil Comparison From: David Leonard To: Rotary motors in aircraft Content-Type: multipart/alternative; boundary=000325574bc223c72c0498f719e8 --000325574bc223c72c0498f719e8 Content-Type: text/plain; charset=windows-1252 Content-Transfer-Encoding: quoted-printable I can't recall which version of the GM coils I have, I have been flying a couple years long than Al, so I would assume that I have the 581's. But I really seem to remember that there was an upgrade just before I bought my coils.. so I am pretty sure they are the 585's. Either way, I have no cooling box or blast tube for them. Though my in-cowl temps are usually only 15 deg or so warmer than ambient. Never had a problem with my coils, though my spark plugs only seem to last for 30 hrs or so. Up to 550 flight hrs now. --=20 David Leonard Turbo Rotary RV-6 N4VY http://N4VY.RotaryRoster.net http://RotaryRoster.net On Mon, Jan 3, 2011 at 12:17 PM, Kelly Troyer wrote: > Steve, > Good to start the year off with an interesring and educational string = !! > Steve to shine > some light on Al's question about electrode erosion and possible "SAG" > reduction what > has been your experience with plug life and have you had SAG with the D58= 5 > coil/igniters?? > > > Kelly Troyer > *"DYKE DELTA JD2" (Eventually)* > > "13B ROTARY"_ Engine > "RWS"_RD1C/EC2/EM2 > "MISTRAL"_Backplate/Oil Manifold > > "TURBONETICS"_TO4E50 Turbo > > > ------------------------------ > *From:* Al Gietzen > *To:* Rotary motors in aircraft > *Sent:* Mon, January 3, 2011 1:38:42 PM > > *Subject:* [FlyRotary] Re: GM Coil Comparison > > Aside from the higher spark current from the D585s eroding the sparkplug > electrodes more quickly; do we have evidence that it will, in fact, impro= ve > performance? Perhaps it is a cure for SAG. > > > > BTW; my 6 D581 coils (Mounted atop my 20B) have been in use since my firs= t > engine start back in about 2001. They have survived many hours of ground > test runs where cowl temps exceeded 150F (at times I=92m 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 dur= ing > 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=92d 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] *O= n > 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 t= hem > 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 s= o > 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] *O= n > 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 wrote: > > Happy New Year Group, > > > > A little info regarding the various GM ignition coils that many o= f > 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....... > > > > > > http://www.megamanual.com/seq/coils.htm#ls1 > > > > http://video.google.com/videoplay?docid=3D-6218245369765754251&hl=3Den > > > > > Kelly Troyer > *"DYKE DELTA JD2" **(Eventually)* > > "13B ROTARY"_ Engine > "RWS"_RD1C/EC2/EM2 > "MISTRAL"_Backplate/Oil Manifold > > "TURBONETICS"_TO4E50 Turbo > > > > > --000325574bc223c72c0498f719e8 Content-Type: text/html; charset=windows-1252 Content-Transfer-Encoding: quoted-printable I can't recall which version of the GM coils I have, I have been flying= a couple years long than Al, so I would assume that I have the 581's.= =A0 But I really seem to remember that there was an upgrade just before I b= ought my coils.. so I am pretty sure they are the 585's.=A0 Either way,= I have no cooling box or blast tube for them.=A0 Though my in-cowl temps a= re usually only 15 deg or so warmer than ambient.=A0 Never had a problem wi= th my coils, though my spark plugs only seem to last for 30 hrs or so.=A0 U= p to 550 flight hrs now.

--
David Leonard

Turbo Rotary RV-6 N4VY
http://N4VY.RotaryRoster.net
http://RotaryRoster.net

On Mon, Jan 3, 2011 at 12:17 PM, Kelly Troyer <keltro@att.net> wrote:
Steve,
=A0=A0 Good to start the year off with an interesring and educational = string !! Steve to shine
some light on Al's question about electrode erosion and possible &= quot;SAG" reduction what
has been your experience with plug life and have you had SAG with the = D585 coil/igniters??
=A0

Kelly Troyer
"DYKE DELTA JD2" (Eventually)

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

"TURBONETICS"_TO4E50 Turbo



From: Al Gietzen <ALVentures@cox.net&g= t;
To: Rotary motors in= aircraft <flyrotary@lancaironline.net>
Sent: Mon, January 3, 2011= 1:38:42 PM

Subject: [FlyRotary] Re: GM Coil Comparison

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

=A0=

BTW; my 6 = D581 coils (Mounted atop my 20B) have been in use since my first engine sta= rt back in about 2001. =A0They have survived many hours of ground test runs= where cowl temps exceeded 150F (at times I=92m sure reached 190+ for short= periods); and 200 fight hours with nary a single failure. In-cowl temps ar= e typically about 150 during climb-out; and generally 120-140 during cruise= . =A0

=A0=

Perhaps it= helps that they get plenty of air flow (during flight) being pretty much i= n blast from the rad exit.=A0 I generally run the rad aux fan for awhile af= ter shutdown; but I=92d guess high temp is less of an issue when they are n= ot operating.

=A0=

Al<= /font>

=A0=

-----Orig= inal 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

=A0

I highly recommend the air cooled enclosure as Steve Boes= e (and I) use.=A0 This is especially important on the D581 and the stock RX= -8 Renesis coils.=A0 The Renesis coils have a fairly high failure rate even= on the car.=A0=A0 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 a= t 10:53 AM, Steven W. Boese <SBoese@uwyo.edu> wrote:

I have about 100 hours on D585 coils and have had no p= roblems with them so far.=A0 The temperature in their airblasted enclosure = is usually less than 100 degrees in flight and has gotten up to 120 degrees= during taxi.

=A0

Steve Boese

=A0

= From: R= otary 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

=A0

<= font size=3D"3" face=3D"Times New Roman">I= have a set of the D585 coils but have only evaluated them on the bench for= compatibility with the EC2/3=A0 (they are).

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

Tracy

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

Happy=A0New Year Group,

=A0

=A0=A0=A0=A0=A0=A0=A0 A little info regarding the various GM igniti= on coils that many of us use on our

Rotary engines=A0with 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 th= e 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.......=A0

=A0

=A0

=A0


=A0

Kelly Troyer=
"DYKE DELTA JD2" (Eventually)

"13B RO= TARY"_ Engine
"RWS"_RD1C/EC2/EM2
"MISTRAL"_B= ackplate/Oil Manifold

"TURBON= ETICS"_TO4E50 Turbo

=A0

=

=A0

=



--000325574bc223c72c0498f719e8--