[NSRCA-discussion] Trim Change

[J N Hiller]

I should have mentioned one other thing I did upon returning home yesterday.
I plugged in another receiver and got the same centering offset. I also
noted the servos seamed to hunt a little (intermittently) between beeping
the trims, classic bad servo pot symptoms. I remember when we had to clean
them several times a season. I don't know if you can clean them anymore, in
any case it isn't worth doing on a $35 servo. By the time the electronics
have a problem the gears are loose also.
I'm down to my last two 3152's and I've held off restocking trying to decide
if I want to change to a JR 2.4 system or stay with Futaba (I prefer to keep
the components matched). I can probably get through this season and next
year I will be flying an all new design with new stuff in it.
Jim

-----Original Message-----
From: nsrca-discussion-bounces at lists.nsrca.org
[mailto:nsrca-discussion-bounces at lists.nsrca.org]On Behalf Of Bill's Email
Sent: Thursday, August 06, 2009 11:13 AM
To: General pattern discussion
Subject: Re: [NSRCA-discussion] Trim Change

Tony wrote:
Trim change with dual rates in not necessarily a bad pot.  It could be a
good pot that has slipped.  This is very common.  Futaba even went to metal
straps to help stop this.  Pots that are bad usually have dirty control, or
a tight shaft.

I guess I should rephrase my comment to be more accurate. Trim changes are
an indication of a problem with the pots. They may be bad or have slipped.
Either way it is a sign that a trip to the transmitter doctor is in order.


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