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Charlie, I'm really quite surprised that someone on
the rotary site hasn't tried an MSD Digital Capacitive Discharge ignition
system, it might even blast a few more hours out of the a set of plugs.
John
----- Original Message -----
Sent: Sunday, April 15, 2012 2:06
PM
Subject: [FlyRotary] Re: Laser Ignition,
was: [FlyRotary] Re: The 16X is A L I V E...
I can assure you that while you might need to ground one to
'make it quit', there are lots of ways it can (and does) quit on its own
without your assistance.
There's a reason that mags are the only truly
redundant item that's standard equipment on a basic FAA-blessed aircraft,
& it isn't because of big combustion chambers.
FWIW, I won't be
trying to home-brew a lasar ignition system. But if multiple car makers are
taking a serious look, it's a pretty safe bet that they are confident in both
the efficiency gains and the potential reliability (they really do hate
warranty returns, and EPA performance requirements last a looong time on new
cars). Once a system has been on the road for a few years, I'd sure be
interested in the motor that's designed for it.
After all, what's the
MTBF for rotary plugs in aviation use, 30-40 hrs? How much longer until
someone gets the dreaded 'SAG' while trying to climb out of a
valley?
Charlie
On 04/14/2012 10:03 PM, CozyGirrrl@aol.com wrote:
LOL, and so some new fangled laser system yet to be proven is going to
cure all of our ills? Lets just say it will be fun to sit back and watch
with optimism for awhile. The early adopters can tell us all about it.
I am curious, we tout our rotary systems and our EFI over conventional
aircraft systems, yet for every wire we have there are two
terminations, how many of the wires hooking up our systems are critical
to keep it running? Got a number?, multiply that by two. Terminations are a
huge liability.
A mag has to be grounded out to make it quit. Not saying it is better,
but from this one angle it sure is simpler.
Chrissi
& Randi
www.CozyGirrrl.com
CG Products, Custom
Aircraft Hardware
Chairwomen, Sun-N-Fun Engine Workshop
In a message dated 4/14/2012 7:28:10 P.M. Central Daylight Time, echristley@att.net writes: On
04/14/2012 11:39 AM, CozyGirrrl@aol.com wrote:
High voltage is cheap and has worked well for over 100
years.
/end
It's her last paragraph that concerned me the most. I spent 20
years working with HID systems focused into fiber optics. Her last
sentence says it all.
I am not against innovation but I am very cautious.
Chrissi &
Randi
She is correct, except that word
"well" has a very fuzzy meaning. There are many levels of
"well". Magnetos work well. Points work well. Electronic
ignition works well. Capacitive discharge works
well.....
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