Mailing List flyrotary@lancaironline.net Message #19887
From: Tracy Crook <lors01@msn.com>
Subject: Re: [FlyRotary] Re: Timing
Date: Thu, 7 Apr 2005 12:00:05 -0400
To: Rotary motors in aircraft <flyrotary@lancaironline.net>
Bottom line is that the 4th valley (between two teeth) following the single 30 degree flat must be centered on the sensor when rotor 1 is at TDC.
 
I have attached a drawing of the wheel but note that the wheel is NOT shown at #1 TDC in it.  The text at 5 deg BTDC on wheel is accurate relative to where the sensor should be at those times.
 
Hope the pix is not too large for list mail.
 
Tracy
 
----- Original Message -----
Sent: Thursday, April 07, 2005 3:31 AM
Subject: [FlyRotary] Re: Timing

Tracy,
You mentioned the timing mounting protocol, placement etc.
I sure would appreciate that advise.
George ( down under)
The RX-8 sensor is magnetic reluctance.  Same type, size & shape as the 3rd gen.  In fact if you have a 3rd gen sensor, you can use it if you can mount it correctly.  The Subaru sensors will also work but they are poor quality (many failures reported) so don't go there.
 
Advantages are:
No ignition timing scatter due to gear lash, single sensor instead of two, and gets the 2nd gen crank sensor out of the way for other things (like alternators).
 
Tracy
>

 From what I can pick up from the conversation, the RX-8 uses some sort
of optical pick-up from a wheel attached to the crankshaft through the
pulley.  What is the advantage in our application?  Compactness?
Lightness?  Durability? Anyone have a picture they could share?

--
This is by far the hardest lesson about freedom. It goes against
instinct, and morality, to just sit back and watch people make
mistakes. We want to help them, which means control them and their
decisions, but in doing so we actually hurt them (and ourselves)."


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