<hr size="1" style="color: #fff" /><! / icon and title ><! message ><div id="post_message_615411">OK putting a H9 33% edge back into the air and the problem is I just received all my servo's(Hitec 7985 elevators)and on the elevators the servo's are mounted inside each horizontal stabs.Not a problem but the servos that were mounted before were a little larger and as such the mount was opened up.I know of half a dozen ways to do it but am looking for some simply suggestions.What I need to do without opening up the stabs is make a smaller mounting surface to hold the servo's in place.I can get 2 servo mounting screws to bite no problem its the other two that have nothing to bite into unless I tilt the screws on an agle.I would rather not do that as well as cut open the stab,I was thinking of making a new plate and gluing it into place or drilling out the holes and placing dowl in there.Any suggestions would be great as I'm about a week away from getting this into the air and never saw this one coming.Let me know,John
The photo shown is just to show how the servo mounts its not my stab but it is from the same plane.</div>

I would think that a new mounting plate to fit the new servos would be OK. Glue it in place and then drill the mounting holes through the original mounting so that the new screws don't crack the original mounting.

Since you did not state how much larger the old mount opening is hard to determine the space you need to alter. You mention by putting screws in at angle can be done that therefore indicates to me you have very little difference in space, perhaps 1/8"? what comes to my mind is why not take a piece of pine or similiar wood and glue it to the existing egde of existing mount on one end. Again I don't know the thickness of existing mount perhaps 1/4" or less but you could also add a piece of thin ply beneath the piece you glue in to span some under the existing mount. clear in my mind, hope you understand. If you were to make a new mounting board it seems to me the thickness of that piece would move the servo arm out too far in slot?

Increase the hole size to accomodate a larger piece of wooden dowel.
Epoxy the dowels in place, and drill new holes in correct location.

HTH,
EJ

Ok thanks for the sugestiuons as I have thought of those ones.The mounting surface inside the stab is 1/4 ply rib.This is a large gas powered plane and the pull if I put screws on an angle might not hold.If I made a plate to incase the mounting flange of the servos say out of 1/8" 5ply it would move the servo out of line with the control horn on the elevators by 1/8".Would like to keep it all in line but strong.Here is my best thought to date is cut out one end of the servo mounting surface(same as both sides),gluing in a plate on the underside say 1/16 ply replacing the rib portion that has been cut out with a new cut of 1/4 ply to inclose the hole for better servo mounting surface and then a 1/32 cap around the top to inclose it and keep it all smooth for mounting of the servo's.With that way it would be like a sandwich with a bottom 1/16 mounted to the existing rib on to the new 1/4 fill piece with a cap of 1/32 to keep it smooth as well as to give bite from top and bottom to hold the 1/4 piece from moving.