REFLECTOR: Elevator Trim Spring

Ron Brown romott at adelphia.net
Mon Jan 30 16:41:43 CST 2006


Adding the shim block at the spring would cause the trim to be more up 
(elevator to go more down).  That is the wrong direction.

Ron

----- Original Message ----- 
From: "Scott Derrick" <scott at tnstaafl.net>
To: "Velocity Aircraft Owners and Builders list" <reflector at tvbf.org>
Sent: Monday, January 30, 2006 11:57 AM
Subject: Re: REFLECTOR: Elevator Trim Spring


> Ron,
>
> how is that different in the final result  from putting a shim block 
> between the spring and where it attaches to the actuator as I did?
>
> Scott
>
> Ron Brown wrote:
>> Morning John,
>>
>> No, lets try again.
>>
>> The objective is to move the actuator forward a bit which provides more 
>> up (elevator down) trim.  (That is if you have a problem with not enough 
>> "up" trim when in cruise configuration, only one person in front seats. 
>> This solution allowed me to not only cruise without pushing forward on 
>> the stick, but also to trim for a 500 fpm descent with a slight reduction 
>> in power).
>>
>> To move the actuator forward, you will need to cut the canard attach 
>> bracket so that the hole is gone.  Now drill a new hole that is 1/4" to 
>> 3/8" forward of where the old hole was.
>>
>> By the way, the bracket shown in the new on-line manual is different from 
>> my 1999 kit.  The new bracket (Long Bracket VAB-02) shown on page 10-8 of 
>> the online manuals is shorter than mine.  What ever bracket you have, the 
>> objective is to move the forward part of the actuator about 3/8" toward 
>> the nose of the plane.
>>
>> Ronnie Brown
>>
>> ----- Original Message ----- From: <aminetech at bluefrog.com>
>> To: <reflector at tvbf.org>
>> Sent: Sunday, January 29, 2006 10:03 PM
>> Subject: Re: REFLECTOR: Elevator Trim Spring
>>
>>
>>> Ok.  Let's see if I got this.  You're talking about the bracket that
>>> attached the actuator
>>> to the canard?  And you shortened the bracket so you could move it aft?
>>> And then
>>> you drilled a new hole in to bracket and attached to the old aft hole in
>>> the canard?
>>> Did you drill a new forward hole in the canard for the other bolt?  How 
>>> am
>>> I doing?
>>>
>>> John
>>>
>>> Ron Brown wrote:
>>>
>>>  John,
>>>
>>>  I had the same problem with my 173.
>>>
>>>  I cut the trim actuator front mounting bracket off at the front of the 
>>> old
>>>  bolt hole.
>>>
>>>  Then I drilled a new hole about 1/4" or 3/8" ahead of the old hole.
>>> Problem
>>>  fixed, and I still have plenty of up trim for take off.  Easy fix.
>>>
>>>  Ronnie
>>>
>>>  ----- Original Message -----
>>>  From: "John Dibble" <aminetech at bluefrog.com>
>>>  To: "Velocity Aircraft Owners and Builders list" <reflector at tvbf.org>
>>>  Sent: Sunday, January 29, 2006 3:11 PM
>>>  Subject: REFLECTOR: Elevator Trim Spring
>>>
>>>  > Flying solo, I run out of down trim at 155 IAS.  On the other hand I
>>>  > have plenty of up trim for TOL.  Can I make a wedge shim where the
>>>  > spring attaches to the elevator tube to shift the adjustment range to
>>>  > more down and less up, or do I simply have to add more glass to the
>>>  > spring to make it stiffer?
>>>  >
>>>  > John
>>>  >
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>>
> _______________________________________________
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