Fred,
I have an email from Andy Draper, dated may, 2002, which could be
out of date by now. This states:
The correct force that the friction damper should resist is 5kg +0/-1kg
at 90 degrees to the long arm (the one that the servo attaches to)
At the time I thought this was a hell of a load and I settled for
the lower end of the range.
Since you still have the top off, you could check that the trim tab
servo internal limit stop on full nose up trim cuts in before the trim
bellcrank hits the tab link rod when full up elevator is applied ( a
very unlikely combination I know). On my early mono wheel kit I had to
shorten the two plastic clevis forks by 3mm so that they could bottom
out when screwed on to the servo link rod. Maybe the factory made this
mod on later kits.
Gerry Cole
----- Original Message -----
From: Fred Klein
To: europa-list@matronics.com
Sent: Wednesday, April 15, 2009 6:37 PM
Subject: Europa-List: Trim Damper Assembly
All,
Before bonding on the top, I want to be certain that the Trim Damper
Assembly is properly adjusted, particularly w/ respect to the amount
of friction when it moves in the slot in TS01. As far as I can tell,
the Build Manual does not address this question, yet it would appear
to be key to having the pitch control system function properly without
burning up the pitch trim motor. I can't seem to get my mind around
the function of this seemingly elaborate confusion of spring, tube,
thru bolt, and nuts of various sizes...it's complexity suggests that,
when properly adjusted, it performs a critical function.
I reference Fig. 2, p. 19-2, and Step 4 & Fig. 6 on p. 19-4.
Can anyone please enlighten me on what proper adjustment would be?
Thanks in advance,
Fred
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