Mailing List flyrotary@lancaironline.net Message #2382
From: Peter Cowan/Lexy Cameron <cowcam@pipcom.com>
Subject: starters and solonoids (pt. 2) again
Date: Mon, 4 Aug 2003 09:32:04 -0400
To: Rotary motors in aircraft <flyrotary@lancaironline.net>
Looking at Dale's excellent freehand drawing with the change that the Motor
M is wired directly to "C" (I'm not using the contactor just the solonoid),
I thought of another potential issue. I'm now getting frequent missed gear
engagements when I hit the starter switch. Could this be due to a slight
"timing" difference between this setup and one solonoid/contactor? With the
one Mazda solonoid/contactor the first thing that moves is the solonoid
which throws the starter gear into the ring gear, then the electrical
contact is made for power to the motor. So the gear is activated a little
ahead of the contactor. With my setup, power gets to the motor at the same
time as power to the solonoid windings so the motor is likely staarting
before the gear engages. Any thoughts/
Peter
Peter



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