Mailing List flyrotary@lancaironline.net Message #39429
From: cbeazley <cbeazley@innovista.net>
Subject: Re: [FlyRotary] Re: One for the smart guys
Date: Sat, 15 Sep 2007 11:27:35 -0400
To: Rotary motors in aircraft <flyrotary@lancaironline.net>
Hi Mark;

Well, the 3800 and high rpm were classic CAS signal breakup hints.
If the shielding/grounding was scoped and OK.
Is the rx8 pickup a hall-effect type with the weird 36? toothed with 3 gaps -> A 36-2-2-2 wheel?
Next guess would be a loose pickup, air gap or something as simple as metal shavings on the pickup.
Cheers
Cary


Ed,
You are getting closer when you stated that it must be erratic ignition.  (I wish I had someone to give me hints).  Yes, the ignition timing was too far advanced, but retarding the timing didn't correct the problem.  The coils are LS1 units, 6 ea, so any individual coil isn't firing any more often than on a 2-rotor.  So, what's causing the erratic ingition?  That's the question.
 
Mark
Subscribe (FEED) Subscribe (DIGEST) Subscribe (INDEX) Unsubscribe Mail to Listmaster