Those are the ones I bought off of EBay a few months back for about
the same price.
David Moyer
Remcon Associates, LLC
Tel: 281-360-2158
Fax: 281-360-2168
Cell: 281-795-2712
On 1/4/2011 11:17 PM, Kelly Troyer wrote:
Group,
Found these D585 Coils on EBay................
Kelly Troyer
"DYKE DELTA JD2" (Eventually)
"13B ROTARY"_ Engine
"RWS"_RD1C/EC2/EM2
"MISTRAL"_Backplate/Oil Manifold
"TURBONETICS"_TO4E50 Turbo
From: Mark
Steitle <msteitle@gmail.com>
To: Rotary
motors in aircraft <flyrotary@lancaironline.net>
Sent: Tue,
January 4, 2011 4:46:51 PM
Subject:
[FlyRotary] Re: GM Coil Comparison
I forgot to include the price. Rock Auto has a number of
brands; I chose the ones for $30.79/ea.
Mark
On Tue, Jan 4, 2011 at 4:35 PM,
Mark Steitle <msteitle@gmail.com>
wrote:
Rock Auto.com
On Tue, Jan 4, 2011
at 4:06 PM, Bill Bradburry <bbradburry@bellsouth.net>
wrote:
Mark,
Care
to share your source and price??
Bill
B
From: Rotary
motors in aircraft [mailto:flyrotary@lancaironline.net]
On Behalf Of Mark
Steitle
Sent:
Tuesday, January 04, 2011 3:53
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
|