William, I don't know that I can really be any help
without looking at the set up directly. But my point about
the Smart tool is that it is an inclinometer (and there
are cheaper if slightly less accurate ones available) with
which you can measure the angle of the top surface in
neutral, fully up and fully down positions. Subtracting
one from the other gives you your deflections with no
scope for confusion. I was not clear whether you are doing
these measurements with both wings rigged and if so
whether you are getting full down and limited up on each
side. Also whether measuring deflections on the unrigged
isolated wing gives you the full range (which of course
rules out any question of the mass balance horn
interfering).
Regards, David Joyce, G-XSDJ
William Daniell <wdaniell.longport@gmail.com> wrote:
> David
> Yes the thought ocurred to me and it could be that this
>is the root of the
> problem. I made two templates and following buds
>instructions measured at
> the hinge both for up and down ie using the lower
>surface of the wing
> compared to the lower surface of the aileron. So yes I
>am measuring both
> up and down from the same place...the inboard hinge mid
>point.
> Is this correct?
> Will
> On 24 Jun 2014 12:43, "David Joyce"
><davidjoyce@doctors.org.uk> wrote:
>
>> davidjoyce@doctors.org.uk>
>>
>>
>> William, I don't know the answer, but if you haven't got
>>one I would
>> strongly advise getting or borrowing a Smart Tool so
>>that you can easily
>> and very accurately measure angles. It does occur to me
>>to wonder whether
>> you are measuring your up and down angles off the same
>>surface (i.e. Are
>> you measuring the neutral angle of say the upper
>>surface, then measuring
>> the up and down angles of the upper surface, rather than
>>the up angle of
>> the upper surface and the down angle of the lower
>>surface) Regards, David
>> Joyce, G-XSDJ
>>
>> William Daniell <wdaniell.longport@gmail.com> wrote:
>>
>>> I am rigging everything prior to closing
>>>
>>> I made some templates 23.5 up and 20 down for use on the
>>>underside mindful
>>> or buds strictures to measure at the hinge
>>>
>>> I have followed the procedure on the book (i think).
>>>
>>> *1. Check that the short aileron link-rod is adjusted
>>>such that when the
>>> bellcrank W13 is against its **stop, the aileron has
>>>moved 23.5 up.*
>>> *2. With the aileron at neutral, adjust the length of
>>>the lateral push-rod
>>> so that the quick-connect **bellcrank W16 is at 90 to a
>>>line between both
>>> spar bushes.*
>>> *3. Adjust the tie-rod between both cranks CS08 so that
>>>both control
>>> columns are parallel.*
>>> *4. Adjust the short outer push-rods between the CS08s
>>>and the CS15
>>> bellcranks so that the latter are **vertical when the
>>>control columns are
>>> vertical.*
>>> *When the wings are rigged the aileron movement should
>>>be 23.5 up and 20
>>> down with full lateral **control column movement and
>>>both ailerons should
>>> be in their neutral positions together when the*
>>> *control columns are vertical.*
>>>
>>>
>>> My ailerons go up the required 23.5 deg against both
>>>stops but they don't
>>> go down the required 20 deg...not even close I would
>>>guess that they are
>>> about 15-17 down
>>>
>>> I have taken it to bits and put it together fiddled
>>>around but Im stumped.
>>> What I am I doing wrong?
>>>
>>> Might it be that the control columns should not be
>>>parallell in this case
>>> due to variation in the build....
>>>
>>> thanks
>>>
>>> Will
>>>
>>>
>>> William Daniell
>>> LONGPORT
>>> +57 310 295 0744
>>>
>>
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