Subject: Tracy's Redrive - Prop Spin
From: ACRE NL
Date: 4/18/2002, 6:18 AM


Hello Paul,
While making some decisions about how to wire my starter circuit, I had
a
question asked to me by another builder.  I didn't know the answer.

He asked if there was a major electrical failure that caused a loss of
power
to Tracy's EI / EFI, would the prop / RD1-B Redrive continue to spin in
the
air stream (thus turning the e-shaft) until I can switch over to the
isolated
"Essential Bus" to reestablish electrical power.  If the engine
continues to
turn over, it should restart immediately after reestablishing electrical
power.  If not, I will need to power the starter off of the isolated
"Essential Bus" in order to restart.

Any info would be very helpful !!!
I may need to ask Tracy directly though.

Thanks,
Don


I think we need to ask Tracy that question. Tracy?

Paul Lamar


In my power off glide tests, the engine continued to windmill until I
reduced airspeed to around 80 mph.  The prop continued to turn the engine
over but would stop on every compression cycle.  Don't know if I could have
restarted by increasing airspeed or not.

Tracy Crook
tcrook@rotaryaviation.com
www.rotaryaviation.com

 
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