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Re: Variable flaps (was OR5)

Subject: Re: Variable flaps (was OR5)
From: Richard Meredith-Hardy <rmh@flymicro.winuk.net>
Date: Fri, 21 Feb 1997 19:56:31
Reter Davis wrote; 
>
>You wrote - "The reason for the slot in OR5 is to cope with a range of flap
>settings without unlatching the OR".
>
>I thought that the reason for the slot was to isolate the flaps from the
>outrigger when latched down so's all that rumble and knocking is not 
>transferred
>through the flaps to all the other undercarriage mechanism, lever, overstop,
>etc.

It does, to a degree, but once the OR is latched OR5 shouldn't move
. It would appear the slot was designed for a 30deg max flap
setting which is too much as you run out of aileron authority, it
was reduced to 26 / 27 but new OR5's weren't sent out as it seems
to work OK.  (A stiffer spring was sent out though to everyone
below about kit 50, we're 47 and I think it was the first mod we
ever got) it was standard after that.

I am making new OR5's to get an idiotproof latching at 26.5deg. 

>
>I also thought about shortening the slot to assist in getting the flaps down 
>but
>on reflection felt that retaining the flap isolating system may be a "Good
>Thing".

The slot needs, in fact must, be only slightly shorter, about 2 - 3
mm. otherwise the flaps will lock at OR latching position (c. 20
deg) and not where they are supposed to be. 
>


Regards; 

Richard Meredith-Hardy
rmh@flymicro.win-uk.net  Tel: 01462 834776 FAX: 01462 732668
BMAA Foot Launched Microlights Office.
Check out the BMAA Web pages at:
http://www.avnet.co.uk/bmaa/bmaa.htm


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