Hello again Mike,
I've just made up a trim bellcrank assembly and have been able to achieve the
desired
result with the friction damper. The end of the nut was about flush with
the end of the TS04 bolt, but the friction was as desired, the spring being
nearly, but not quite coil bound. The spring is there to enable fine
adjustment.
The friction breakout force should be around 10 - 11 lb when pulling on the end
of the bellcrank's long arm. If you've painted or treated the bracket with the
slot in you will have altered the friction characteristics, probably lowered
them, so remove any paint that's on there.
If the friction is too high, you could try reversing the nut so that the
gripping
nylon is still in contact with the thread with the nut not fully screwed onto
TS04.
Incidentally, you will notice that there is a small radius between the TS04's
head
and shaft. You'll need to chamfer the inside of one of the friction washers
to allow it to sit against the head properly.
The M5 x 60 bolt should only be inserted through the bellcrank enough for the M5
nyloc nut to be threaded on to the end of the bolt. This will leave about 1/2"
of the headed end protruding from TS04.
I hope that this is able to answer your questions.
Best Regards
Andy Draper
Technical Director
e-mail andy@europa-aircraft.com
>>> <DuaneFamly@aol.com> 03/11/03 09:29:02 >>>
Good day all,
Seems that I am having more questions the further I go from this point. I
just finished installing the cockpit module and the rear bulkhead aft of the
tailplanes. I went to make up the Pitch Push Rod and found a problem. The manual
says to cut a EUR002 Set Screw to 1 1/2", then fully screw it into the CS17A
End Cap with some Threadlocker and a locking nut on the other side. But the
EUR002's that were supplied are only threaded halfway down the shaft. Am I
missing
something? And they are not easy to replace because they are not standard
bolts found at your local Ace Hardware store or Home Depot.
Then, when building the Trim Damper and Bellcrank Assy the manual says to cut
the TS04A Shaft to 28mm. It's already that length! But the M5 X 60 bolt that
goes thru the center is too long, it hits the TS02 support on the other side.
Does this get trimmed to fit? Then there is no mention of how tight the M10
Nylock is to be. With it "just on", the spring load is very tight. Is the trim
drive servo that strong?
I know this is homebuilt, but these type things could nag me later. Thanks in
advance for any insight from those that have gone before.
Mike Duane A207
Redding, California
XS Conventional Gear
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