I think I will allow Tracy to look inside…:>)
B2
From: Rotary motors in aircraft
[mailto:flyrotary@lancaironline.net] On
Behalf Of Jeff Whaley
Sent: Wednesday, January 09, 2013
9:23 AM
To: Rotary
motors in aircraft
Subject: [FlyRotary] Re:
[FlyRotary]: Hiccup
Bill,
something you can check that doesn’t take too long:
Pop
the top off your EC2 and slowly press on the socketed, micro-controller chips
one at a time – they should not move; if one does it is not 100% seated
in the socket.
Jeff
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From:
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"Bill Bradburry"
<bbradburry@bellsouth.net>
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Subject:
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RE: [FlyRotary] Re: Aeroquip hose changed to hiccup
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Date:
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Tue, 8 Jan 2013 23:42:07 -0500
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To:
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"'Rotary motors in
aircraft'" <flyrotary@lancaironline.net>
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No, I have the 2.85 gearbox. I
have the MT electric prop, so I fly WOT and use the prop to govern the engine
speed.
I have changed the plugs with no
effect. The mixture is fine when this is happening. Fuel pressure
also. I had an incident once on take off like you describe where the
plane was backfiring like crazy just after I lifted off. I had the
mixture too rich. I dialed it back and everything smoothed out.
This is different. It doesn’t really backfire. It is a
thump and it jerks the engine and plane. You can hear and feel
it. It seems to be a single thump and it has varying degrees of
violence. Some are just a little miss and some are so bad it shakes
everything. These are less frequent, but they are bad enough that I
don’t think they are good for the PSRU, prop, or engine mount.
That is why I have been bugging Tracy about the change
for the EC-2. I have my fingers crossed that this will fix it.
:>)
Bill B
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