REFLECTOR: Strong Pitch Trim

[Tom Martino]

I tried it and I did not like it.  It is a great system design and if it
worked as intended there would be no doubt as to it's validity.  But
here is the problem I ran into ... and I tried it several different
ways.  In fact, Alex Strong agreed with me on the problem.
 
When you run your stick full fore or aft when it is trimmed (or even in
neutral) ... it does not "snap back" to the original position.  It gets
hung up in the channel.  That's because you have "up pressure" trying to
pull the carriage out of the track while at the same time spring
pressure trying to move it fore or aft.
 
I understand there is one Velocity user who loves it and has not had
this trouble.  I had my installation looked at and I was doing it
correctly ... but it did not work out for me?
 
By the way ... I did have Alex design his motor-straight arm system for
my aileron.  It has half the force of the trim spring.  I mounted it on
the side of the fuselage and use it to move the aileron bell crank to a
specific roll trim position.  I love it for roll trim (but it only
involves in-out pressures, unlike the trim pitch).
 
Tom
 
 
 
-----Original Message-----
From: reflector-bounces at tvbf.org [mailto:reflector-bounces at tvbf.org] On
Behalf Of Brett Ferrell
Sent: Saturday, July 16, 2005 9:48 AM
To: Velocity Aircraft Owners and Builders list
Subject: Re: REFLECTOR: Strong Pitch Trim
 
Joe,
 
I have one, and I like it, but I'm not flying.  Ask Dave Nelson about
it, he's been flying his for awhile and published in the Velocity Views
and Central States Newsletters about how much he liked it.
 
>From an earlier Reflector post
"{DN}  Scott, I'm a long way from being a builder.  I actually had
several hundred hours of flying time on the factory design in my
aircraft before I did the panel upgrade.  I found the original system to
be adequate, but hardly a "finer design feature".  It was only after my
panel upgrade (and several hundred more hours of flying) - and -
numerous attempts to make the "stock" design work, that I started
working with Alex on a better solution. 
 
I agree that many builders tend to over-over-OVER engineer and debate
things on this forum.  That's one of the reasons that I'm a lurker
rather than a regular contributor.  Quite frankly, endless debates about
stuff that works just fine as designed by Dan or by the Swings bore the
heck out of me.  However, the stock pitch trim system was not working
adequately for me after my panel upgrades, and so I'm mearly reporting
on my solution.  My motive for installing a different pitch trim system
is simple - the per plans setup was not satisfactory for my particular
aircraft.
 
One last comment; there's a big difference between building and
experimenting.  I always tell people that talk about modifications to
think about how much of a test pilot do you really want to be?  Food for
thought... the per-plans kit built airplane is a pretty well proven
design.  However, for me, this isn't my first airplane project, and I've
got over 600 hours on it... so I hope you'll allow me to do a little
experimenting that maybe I wouldn't have chosen to do with less
experience.  
 
BTW, I've got a sign on my office wall - it says:
 
If it ain't broke, BREAK IT:
Take FAST and make it FASTER
Take GOOD and make it BETTER
 
Dave"
 
----- Original Message ----- 
From: "Joe" <jewen at comporium.net <mailto:jewen at comporium.net> >
To: "Velocity Aircraft Owners and Builders list" <reflector at tvbf.org
<mailto:reflector at tvbf.org> >
Sent: Saturday, July 16, 2005 10:01 AM
Subject: REFLECTOR: Strong Pitch Trim
 
> Does anyone currently monitoring Reflector and a Strong Pitch Trim
unit
> installed.  If so I would like to know if you are satisfied with the
unit.
> 
> Thanks,
> Joe
> 
> 
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