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Old 11-29-2020 | 10:35 AM
  #56  
Dave Wilshere
 
Joined: Jun 2002
Posts: 13,244
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From: Watford, UNITED KINGDOM
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Still not got it on the gear ready for decals, too much time on Reno Racers and other jobs. But I did some work on the wings.
I am now ready to glue the servo mounts to the cover plate. Over the years the servos we use have grown from the amazing JR8411, and in the factory the flap horns have drifted away from their intended 180mm from root position (we are addressing this shortly) so I cut the tacked together mounts to bring the servos base to base. The increased servo width required a little filing to allow the larger JR 8911/8935 I'm using.to fit the mounts too.
I always set up the linkage with the servo assembly loose, you can adjust the flap linkage before screwing everything down. To set up the flap servo I mark the pushrod movement (two green Sharpie marks) on the skin, that showed approx 25mm movement required, so I used the second hole out on my arms at 14.5mm. The Flap pushrods with this set up are 80mm centres. While you are adjusting I use a spare length of 3mm studding to hold the ball link in the flap horns, this reaches the edge so pulls in and out easier than fiddling with the M3 screw.
You can see that before mounting the servos the final time I lined the inside of the wood mounts with tape, this way I can glue the assembly as it is and no Hysol glue gets on my servo cases.