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Sorry, Bill.
I don't remember. I'll guess at the 8mm. They don't seem unusually
thick.
John
On 1/13/2013 12:47 PM, Bill Bradburry wrote:
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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