REFLECTOR: Pitch trim ( was Fixed vs RG)

Dave Philipsen velocity at davebiz.com
Wed Aug 23 22:35:16 CDT 2006


Thanks for the suggestions, Pat.  I will take a look and see which of 
these is going to be the most feasible for me.  I definitely will be 
using one of them to correct the problem.


Pat Shea wrote:
> Dave,
>
> Once installed, here are some options for adjusting
> the pitch trim for more 'down' trim:
>
> - Move the bracket that mounts the pitch trim motor to
> the canard forward. To do this you will either need to
> slot or re-drill the mounting holes in the bracket.
>
> - Drill out the rivets that connect your trim spring
> bracket to the elevator torque tube, and then re-drill
> and re-rivet with the elevator trailing edge set up a
> little higher (more 'down' trim). You will probably
> need to remove your canard to do this. Also, I would
> consider overdoing this a little since it's
> real easy to add a spacer between the trim motor
> attach bracket and the trim spring if you go too far
> and need more up trim later.
>
> -Install a spacer between the trim spring and the V
> shaped mounting bracket on the elevator torque tube to
> get more down trim. A wedge shaped spacer may work
> best for this.
>
> Make sure you test for any interference issues after
> making any adjustments, specifically with the pitch
> trim spring. You will want to artificially load the
> elevator with your hands while doing this since the
> fiberglass springs moves quite a bit when loaded...  
>
> In terms of the TO pitch trim setting, try setting the
> elevator one finger's width below the trailing edge
> with one person up front and two fingers width with
> two people up front.
>
> Pat 
>
>
> --- Dave Philipsen <velocity at davebiz.com> wrote:

-- 
Dave Philipsen
STDFG
N171SP




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