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Kelly,
I was lucky enough to mount the coils just
the right distance from the plugs and I am now using the stock RX-8 wires, so
if they fit the RX-8, they will fit my installation.
Thanks, Ed. I was going to go with
the 8.5 if no one came up with a reason for the thicker ones. The stock
wires are 7mm, and it is pretty hard to get them into the wire loom, so I will
probably need to get a larger loom for either one. I will try it first.
Bill B
From: Rotary motors in aircraft
[mailto:flyrotary@lancaironline.net] On
Behalf Of Kelly Troyer
Sent: Sunday, January 13, 2013
3:34 PM
To: Rotary
motors in aircraft
Subject: [FlyRotary] Re: Hiccup
Bill,
One more consideration..............The Magnacore wires
for the Stock RX8 Renesis may not be
the proper length for your installation...........Probably you will
need a custom set made if you have
not already figured that out !!.............<:)
Kelly Troyer
On Sun, Jan 13, 2013 at 1:06 PM, Ed Anderson <eanderson@carolina.rr.com>
wrote:
Bill, I have the 8.5mm wires - seems like there was a reason
(other than price, but too long ago to remember - perhaps I could only get
different color boots on the 8.5)
Sent: Sunday,
January 13, 2013 12:47 PM
Subject:
[FlyRotary] Re: Hiccup
Ed and John,
Do you guys have the 8.5 or the 10 MM thickness? Does it
matter?
Bill B
From: Rotary motors in aircraft
[mailto:flyrotary@lancaironline.net]
On Behalf Of Ed Anderson
Sent: Sunday, January 13, 2013
7:14 AM
To: Rotary
motors in aircraft
Subject: [FlyRotary] Re: Hiccup
I agree with, John. I had Magnacore make custom wires for my
rotary - cost me around $45 back then. Have flow for close to 10 years
now with the wires with no problem. I also had the boots in
two different colors, one color for leading and one for trailing.
Sent: Saturday,
January 12, 2013 7:31 PM
Subject:
[FlyRotary] Re: Hiccup
I'd recommend paying the $85. My magnacore custom made plug
leads haven't given me a problem in 8 years.
Any way you can eliminate one possible cause is worth it. One nice thing about
Magnacore is that they will make them to specified length with pre-installed
connectors. I got mine in 2 colors. Red for leading, Black for trailing.
On 1/12/2013 3:18 PM, Bill Bradburry wrote:
The Magnacore wires are fairly pricey, about $85 for the
RX-8. Not that I am cheap or anything, but does anyone have a more
economical source??
Bill B
From: Rotary
motors in aircraft [mailto:flyrotary@lancaironline.net]
On Behalf Of Steven W. Boese
Sent: Saturday, January 12, 2013
1:30 PM
To: Rotary
motors in aircraft
Subject: [FlyRotary] Re: Hiccup
I had an aftermarket tachometer on my engine
test stand that would often read twice the actual rpm. The engine stand
was set up so that the power to each of the four ignition coils could be
controlled independently. The spark plug wires were Mazda OEM. The
behavior of the tach would sometimes be affected by the combination of
ignition coils that were active. In the course of troubleshooting, it was
found that the tach would consistently read twice the actual RPM when its
input wire was completely disconnected at the tach. It was concluded that
the tach was responding to signals emitted by the spark plug wires and
the doubled rpm indication was due to triggering by the ignition
signals from both rotors. Replacing the Mazda spark plug wires
with Magnecore wires from the installation in my plane cured the tach
errors. Now, however, checking the ignition timing with an inductive
timing light pickup on these wires was difficult whereas it was not a
problem with the original wires.
It should be noted that the EC2 on the
engine stand never gave any indication of having problems when either set
of spark plug wires was installed in spite of being physically located closer
to the coils and spark plug wires relative to the tach.
Steve Boese
RV6A, 1986 13B NA, RD1A, EC2
Dunno how many people here remember when spark wire was just that:
wire. But it was electrically noisy. So it got replaced by carbon
impregnated fabric, which has rather high resistance (a cheap way to damp the
"noise").
Another way to suppress the "noise" is to wrap the wire (many turns,
closely spaced) around an insulating core, which creates an inductive
impedance, which accomplishes the same goal but readily passes spark
current. AFAIK, "MAGNECORE" was the first to explore this
method, but several companies offer a similar product now. According to
some sources, the core material can make a large difference in the inductive
effectiveness. Therefore, I'd recommend
MAGNECORE.
-- Best Regards, Dale_R (who has no financial interest in Magnecore) Cozy MKIV #497
On 1/12/2013 7:21 AM, Bill Bradburry wrote:
Anybody have a recommendation for ignition wires for the
Renesis? I have the original Mazda wires. I checked them out
yesterday and they seemed fine, but I am still considering replacing them to
see if it helps.
Bill B
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