|
|
Although more powerful ignition systems may be beneficial under some conditions, it will not help with sag. This is because sag is not due to the failure of the plug to produce a spark.
From: Rotary motors in aircraft [flyrotary@lancaironline.net] on behalf of downing.j@sbcglobal.net [downing.j@sbcglobal.net]
Sent: Sunday, April 15, 2012 2:06 PM
To: Rotary motors in aircraft
Subject: [FlyRotary] Re: Laser Ignition, was: [FlyRotary] Re: The 16X is A L I V E...
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
|
|