REFLECTOR: Pitch Trim Mystery
Tom Martino
tmartino at troubleshooter.com
Thu Mar 23 11:17:58 CST 2006
I probably did a stupid thing. But I connected my control stick
switches directly to the trim motor and breaker. There is no relay in
between. I know it is just a matter of time before the switches say
"goodbye".
Question: Is there an easy way to connect a relay (up near the trim
actuator) where it is easy to get to the wire leads? My logic says
"yes" ... but I want to hear from those who have retrofitted/
Thanks
-----Original Message-----
From: reflector-bounces at tvbf.org [mailto:reflector-bounces at tvbf.org] On
Behalf Of Ron Brown
Sent: Thursday, March 23, 2006 10:06 AM
To: Velocity Aircraft Owners and Builders list
Subject: Re: REFLECTOR: Pitch Trim Mystery
John,
I agree with TEC:
If the trim switch is in the control stick, it probably has a very low
power rating and needs to be actuating relays. If there is a relay, you
need to trouble shoot and determine if the problem is in the relay or
the switch.
If your trim switch is mounted on the panel (and involves no relays),
then the switch needs to be replaced.
Ronnie
----- Original Message -----
From: HYTEC45 at aol.com
To: reflector at tvbf.org
Sent: Thursday, March 23, 2006 11:38 AM
Subject: Re: REFLECTOR: Pitch Trim Mystery
In a message dated 3/23/2006 8:31:06 A.M. Pacific Standard Time,
aminetech at bluefrog.com writes:
Any suggestions on what
to do with the switch?
Use the switch to operate a relay (DPDT). The relay can handle
a larger load then the switch. Plus, the relay is much easier to
replace or trouble shoot in the event of future service. I have an
original military grip w/cooley hat. It would be tough to find a
replacement switch for that, so I elected to use relays to carry both
the roll and pitch loads. Has worked fine for 11 years.
TEC
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