Here is something from the MSD Pro Mag web site that is relevant
to the rotary. Triggering the ignition off the front of the
e-shaft as done on the 3rd gen and RX8 (or better yet, the flywheel)
is much more accurate than using the second gen 13B and three rotor
20B crank angle sensors. Now here is the good part. Unlike a four cycle
piston engine there is no need to determine (usually from the camshaft)
when the combustion chamber is on the proper cycle to fire. The rotary
always fires at a specific e-shaft angle. Twice per rev on a two rotor
and three times per rev on a three rotor.

Paul Lamar

"Brian D. Cain" wrote:

This is very interesting, Paul.  I'm glad you've posted this and brought it
to light.  I've heard that the factory CAS (crank angle sensor) on the older
13B's isn't as accurate as the crank trigger wheel but I never knew it was
to that much of an errored degree.  This makes me want to switch to the
better wheel and dump the CAS.

B

 
The AirCraft Rotary Engine NewsLetter.  Powered by Linux.
ACRE NL web site. http://home.earthlink.net/~rotaryeng/            
Copyright 1998-2003 All world wide rights reserved.