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Autopilot servos for XP

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scott(at)s-f-x.com
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Posted: Sat May 11, 2013 2:55 am Post subject: Autopilot servos for XP

Hi



I think I've worked out the trim issue - I'm going direct with a Ray Allen unit and if I need more travel for pitch trim I will add a pulley to double it or split the difference with a lever. Thanks for the feedback.

I'm now looking at fitting a pair of Dynon AP servos and was hoping to achieve enough movement from them - I measured the stick movement and it looks like the elevator pushrod moves to and fro 3" and the roll (measured from the bolt holding the rod-ends on the aileron pushrods) seems to move 4" but the wings are not fitted at present so not sure if there is a more limited range of travel.

Can anyone suggest if the roll can be achieved from the standard attachment point as I have 3.6" of travel available with the outside hole on the long arm on a SV32 - there is an extra long version available but it's normally fitted with the next size up (SV42) which then adds an extra 1lb weight and draws twice the current - which is a scarce resource when running a glass panel etc.

If there are any indications as to the effort required to move the controls that would be useful - the figures for the servos are quite good but I have no idea what the potential forces on the stick might be - I've only had a few hours a long time ago !

Cheers people



 Scott MacIntyre

G-BUZB

23 Mellor Road

New Mills

Derbyshire

SK22 4DP

UK

UK Mobile: +44 7860 208432

US Mobile: +1 (818) 397-0666

Email: scott(at)s-f-x.com (scott(at)s-f-x.com)



 



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