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From Wikipedia...
Historically, straight-five engines have been used rarely
but continuously since their invention, though they have become increasingly
popular in recent years. They are used in Audis, Volkswagens,
Volvos,
Land Rover
TD5s and on some diesel-powered Mercedes-Benz
models, as well as on the Acura 2.5 TL and Vigor.
Recently, General Motors launched a straight-five engine for
its popular compact trucks (Chevrolet Colorado, GMC Canyon, and the Isuzu
i-350). It also powers the Hummer H3
NeilK
From: Rotary motors in
aircraft [mailto:flyrotary@lancaironline.net] On Behalf Of Bill
Bradburry
Sent: Tuesday, January 04, 2011 6:33 PM
To: Rotary motors in aircraft
Subject: [FlyRotary] Re: GM Coil Comparison
What has 5 cylinders???
Bill B
From: Rotary motors in
aircraft [mailto:flyrotary@lancaironline.net] On Behalf Of Bobby J.
Hughes
Sent: Tuesday, January 04, 2011 6:26 PM
To: Rotary motors in aircraft
Subject: [FlyRotary] Re: GM Coil Comparison
Here's one idea.
http://www.audizine.com/forum/showthread.php/272465-Converted-95-S6-ignition-to-GM-Delphi-D585-coils
From: Rotary motors in aircraft
[mailto:flyrotary@lancaironline.net] On Behalf Of Mark Steitle
Sent: Tuesday, January 04, 2011 2:53 PM
To: Rotary motors in aircraft
Subject: [FlyRotary] Re: GM Coil Comparison
Yesterday I ordered 6 new D585 coils for my 20B. It
looks like they mount differently than the D580 coils. Does anyone have
any pictures they could share of how they mounted their D585 coils?
FWIW, the old D580 coils have close to 200 hrs on them with
no failures. I mounted them down low on the motor mount. The lack
of vibration and heat may account for their longevity.
Mark S.
On Mon, Jan 3, 2011 at 2:53 PM, Steven W. Boese <SBoese@uwyo.edu> wrote:
Kelly,
My spark plug life has been the same
with the stock 13B coils and the D585 coils. I have had SAG with the D585
coils also. As I discussed at the Paducah fly in, SAG does not appear to
be a spark plug misfire or failure to spark. The effect on EGT and coolant
temperatures is the opposite for SAG as opposed to no spark with either the
trailing or leading plug. I have seen evidence that SAG may be (similar
to?) preignition caused by decreased thermal conductivity between the center
electrode and the tip of the ceramic. This decreased thermal conductivity
results from corrosion between the ceramic and the center electrode and this
corrosion is accelerated by the use of leaded fuel. There is also some
evidence for decreased thermal conductivity of the center electrode copper core
as the spark plugs age.
Steve Boese
From: Rotary
motors in aircraft [mailto:flyrotary@lancaironline.net] On Behalf Of Kelly
Troyer
Sent: Monday, January 03, 2011 1:17 PM
To: Rotary motors in aircraft
Subject: [FlyRotary] Re: GM Coil Comparison
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 D585
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 <ALVentures@cox.net>
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, 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:
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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