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All
Am I missing something here? At 6000 eccentric
shaft RPM, each rotor pair of coils is firing once per revolution
which is 6000 pulses per minute, ( not 12000 ), or 100 pulses per
second.
Dean Van Winkle
----- Original Message -----
Sent: Wednesday, January 18, 2006 4:58
PM
Subject: [FlyRotary] Fw: [FlyRotary] Re:
LS1 Coil Failures
----- Original Message -----
Sent: Wednesday, January 18, 2006 5:01 PM
Subject: Re: [FlyRotary] Re: LS1 Coil Failures
Cause still to be resolved, Bob. Too soon to
worry, but, if truly a problem better to find it now than at 2000 MSL on some
take off down the road. Although with 6 (20B I presume) you can stand a
coil failure a bit better than us two rotor.
Ed A
----- Original Message -----
Sent: Wednesday, January 18, 2006 3:44
PM
Subject: [FlyRotary] Re: LS1 Coil
Failures
Plus I really hate reading all this about the LS1 coils....I just
purchased 6 yesterday.
Bob Mears -----Original Message----- From: Mark
R Steitle < mark.steitle@austin.utexas.edu> To:
Rotary motors in aircraft < flyrotary@lancaironline.net> Sent:
Wed, 18 Jan 2006 14:24:20 -0600 Subject: [FlyRotary] Re: LS1 Coil
Failures
Bill,
I feel it is a fair
assumption that the LS1 coil was never intended to run at 12,000 rpm, as
would be the equivalent of what we?re doing with the rotary at 6,000
rpm. So, we?re clearly operating it outside the design range.
Does this shorten their life? Don?t know, but Tracy?s experience
seems to indicate this could be the case. Couple this with other
extremes, such as temperature and frequency and they might not be up to the
task.
The coils on my
126,000 mile LS1 truck are all factory stock. No failures (knock on
wood).
Mark S.
From:
Rotary motors in aircraft
[mailto:flyrotary@lancaironline.net] On
Behalf Of wrjjrs@aol.com
Sent: Wednesday, January 18, 2006 1:27
PM
To: Rotary motors in aircraft
Subject: [FlyRotary] Re: LS1 Coil
Failures
There may well be a duty cycle
problem, but I doubt it. Older ignitions used a single coil of similar type
firing all 8 cylinders. I would be more likely to suggest it was a "bathtub
failure curve" failure of the solid state "trigger"
circuit.
-----Original
Message-----
From: Mark R
Steitle <mark.steitle@austin.utexas.edu>
To:
Rotary motors in aircraft
<flyrotary@lancaironline.net>
Sent: Wed, 18 Jan 2006 10:51:47
-0600
Subject: [FlyRotary] Re: LS1 Coil
Failures
Sorry, that's what
I get for doing "head math". Anyway, my point is still valid. It
fires 8 times more often in the rotary than in the truck/auto. Could
the duty-cycle be the culprit? It would be interesting to see the
specs on these coils.
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