REFLECTOR: Pitch trim poll
Scott Derrick
scott at tnstaafl.net
Sat Feb 28 14:03:36 CST 2009
My Strong pitch servo has NC micro switches at each end of the screw.
When you get near the end of travel, power is removed from the servo,
thus you never bump up against the end of travel on the physical screw.
I can hold the switch down in either direction forever and it would
never cause any problems.
Does you servo have these switches?
My advice is to take a picture of the servo and send it to Alex. See if
he would recommend changes to the unit. Alex has been more than helpful
for my installation.
Scott
KMis178813 at aol.com wrote:
> Scott
> I have not contacted him about the sticking unit for a couple
> reasons. First one being that if I had not accidentally held the left
> trim button on the stick it would have never happened (and I don't
> think he can fix Pilot error on my part) The other reason is that his
> trim actuator uses the clutch drive from a drill. If you keep pounding
> it in on one of the ends I can't see how he would be able to make more
> power to get the clutch to overcome what is already locked up. I'm a
> realist, keep your finger off the button and it would not be a
> problem. How old I don't know, It came in a box of extra parts from
> "Shazam's" purchase.
> Ken
>
> In a message dated 2/28/2009 9:46:27 A.M. Eastern Standard Time,
> scott at tnstaafl.net writes:
>
> Ken,
>
> how old is your Strong actuator and have you talked to him about it?
>
> Scott
>
> KMis178813 at aol.com wrote:
> > Sorry I can't help you with the pitch trim but I do have a Strong
> > Aileron trim installed. Recently I had a (pilot induced) runaway
> trim.
> > The Strong system got stuck in a full left aileron trim. When I
> > installed this system I did confirm that in the event of a
> runaway the
> > system could be overcome for normal (tired arm) flight. The strong
> > system can get stuck at the ends and not come back, at least the
> one I
> > have. Tried to stick the system again and I can't reenact it on the
> > ground. Other than that it works great, just a little bug to work
> > out. Moral of the story, Be careful when using a non standard system
> > that in the event of a runaway you can still overcome the trim.
> > Ken
> >
> > In a message dated 2/27/2009 9:52:47 P.M. Eastern Standard Time,
> > stedmanlou at roadrunner.com writes:
> >
> > I would also be interested in hearing from those who are using
> > this product. How does it effect the stick forces?
> >
> > Lou Stedman
> > Velocity N7044Q
> > Olean, NY
> >
> > ----- Original Message -----
> > *From:* Don Johnston <mailto:don at numa.aero>
> > *To:* reflector at tvbf.org <mailto:reflector at tvbf.org>
> > *Sent:* Friday, February 27, 2009 1:10 PM
> > *Subject:* REFLECTOR: Pitch trim poll
> >
> > I’m getting ready to install the elevator pitch trim and
> heard
> > about the Alex Strong pitch trim.
> >
> >
> >
> > http://mysite.verizon.net/res80xp0/strongvelocitypitchtrim/
> >
> >
> >
> > Just wondering what the general consensus is regarding this
> > versus the factory trim mechanism.
> >
> >
> >
> > Is there anyone that’s flown with both and can offer a
> comparison?
> >
> >
> >
> > As for the people flying behind the factory version, are you
> > happy with it?
> >
> >
> >
> > It does seem to open up some room on top of the canard.
> >
> >
> >
> > -Don Johnston
> >
> >
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