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1. 05:48 AM - When checking magnetos, intermittent engine shut down. (dwwilt)
2. 06:21 AM - Re: Roll Adjustment (Randy Cannon)
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Subject: | When checking magnetos, intermittent engine shut down. |
I also posted this in the Jabiru engine forum.
This morning I was going to go fly when during run up, as I was taking the switch
from left to both, the engine "burped". I'll call it a burp, but it really
was in process of shutting down. I checked left mag again and the engine quit,
back to both and since the prop had not stopped, it came back up. I checked
several times and the left mag position was intermittent. It would be ok and
then it would shut down.
After getting back to the hangar, I pulled the cowl and did not see anything unusual.
I checked the wire from the magneto to the distributor cap and it seemed
to be on Ok, although looser than the right magneto wire. I'll go see if my
playing with the magneto wire did anything positive later this afternoon or
tomorrow morning.
My flying window had closed for the morning, so I came home and decided to send
out this post. Any ideas? Could it be the ignition switch?
Thanks for any ideas out there.
--------
Dennis
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=367842#367842
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Subject: | Re: Roll Adjustment |
Thanks Nick, I will try your suggestions.
George
----- Original Message -----
From: Nick Otterback
To: Lightning-list@matronics.com
Sent: Monday, March 05, 2012 9:22 AM
Subject: Lightning-List: Roll Adjustment
George,
I know you emailed with the newsletter thread but this warrants a
thread of its own.
First Adjusting the Ailerons will not correct any roll problem in an
aircraft with push rod system similar to ours. The "system" will simply
fly in a different position and you r stick will be off center. The
ailerons should be neutral with the tips of the aircraft with the stick
centered vertically.
Next measure the difference of angles between your flaps. You can
measure the gap up or down from the wing roots on the fuselage for
reference or use an digital level on the bottom surface of the flap. I
would suggest only having about a =BC" difference in flap angle if using
the fuselage as a reference point, or about 5 degrees in flap
differential.
IF the flaps are currently at deferent angles, and adjusting will help
the eliminate the roll and make them closer to even, than do that first.
If they are even, than try dropping one and raising the other. In your
case some left flap drop and right flap rise will help.
Now if the flaps are adjusted to the maximum suggested, than its time
to put a small tab on the aileron. Build the tab from a 2" by 6" piece
of 0.040 aluminum. These seem to be more effective if bent down to fly
the aileron up, so a small tab on the right aileron bent down will help
the roll.
As for attaching the tab, most hardware stores have what called
"gorilla tape" this is a 2 sided tape that will hold just about anything
together.
This will be good to test the tab, once happy than bonding it on is
the permanent solution. Bond the tab on by; sanding the aluminum with
60 grit paper on the portion that attaches to the aileron, do the same
to the aileron. Wipe clean with acetone or similar to degrease. Use some
good structural epoxy for this, 24 hour is not needed but if that is
what you got ok, make sure to mix some flox in as well to provide a
filler for the small voids.
There are many more ways to correct the roll, and maybe we will get
some more suggestions.
Nick Otterback
Arion Aircraft LLC
R&D Technical Support
931-680-1781
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