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I do not believe that is a significant factor, either,
Al. After all, we're suppose to do our ignition checks on the ground
before take off {:>). My understanding is that best power on the 13B
has ignition timing between 25-28 deg BTDC, so not surprising that the 20B would
fall in that range also. Sounds reasonable to me.
Ed
----- Original Message -----
Sent: Wednesday, September 19, 2007 3:08
PM
Subject: [FlyRotary] Re: Strange
Ignition?
I
wondered if perhaps one issue was that I was doing the ignition check static,
on the ground; where the combination of RPM and MAP would be different than in
the air. But on checking with Tracy’s spreadsheet on
the timing settings, over a fairly broad range above about 4900 the timing is
(should be) in the range of 26 to 28 degrees BTDC.
Al
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