Make sure your ENGINE is properly grounded
to the battery negative, your Seawind is a glass machine so you also have a
long GROUND umbilical cord … I had similar problems when first starting
my engine on test stand.
Jeff
From: Rotary motors in aircraft
[mailto:flyrotary@lancaironline.net] On
Behalf Of Al Gietzen
Sent: Thursday, September 21, 2006
11:41 PM
To: Rotary
motors in aircraft
Subject: [FlyRotary] Re: It runs!
However,
I put the timing light on each of the plug leads and was really
confused
at what I saw.
#1, both lead and trail, 35 degrees before TDC So good so far.
Timing marks on the
pulley are set for timing on rotor one. Spark on #2 should be 120 degrees
later (40 degrees rotation of rotor) and another 120 degree later on rotor 3.
I don’t know about ‘waste’ sparks, but it does seem you
should see consistent sparks at the right place for each rotor.
I
am hopeing that the extra length of my embilical
cord
from the firewall to engine (Seawind) accounts for all of that, but I
have
a hard time convincing myself that is so.
What do you mean by
‘embilical’ cord engine (I think the word is umbilical) –
wires from the box to the engine? Do you have the
‘triggering’ leads from box to coils separated from the leads from
the CAS to the box? I think inductive coupling there could be a problem,
even if the CAS leads are shielded. I’m sure you’ve double checked
all the coil wiring, ground points, etc.
Good luck,
Al
Any
other good ideas?????
Bob
Darrah
Seawind/20B
Near
Austin, TX
(But
my spell checker said it was ok)
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