I picked up a Avistar ARF from a seller this past Sunday. Got a great deal but the kit does not have the plywood parts. I can't buy the parts I need and Hobbico will not send any drawings. If anyone has one they have not put together yet and could scan and e mail I could get the plywood and make the parts myself. They include the servo tray for both in the plane and on the wing, the reciever and battery tray and the wing braces. Hope I put this in the right spot and thanks for the help!

HI,
You should be able to make your own servo trays and frames. Just do a search for each and I bet you find som pics for examples. I don't know what you mean by "wing supports" ??? Posting a picture of the inside of the plane might help.

I can take some pics of mine but dont know how helpfull they will be.

The "wing supports" are the dihedral braces. I remember from my Superstar that I put together years ago that they were two of the plywood pieces that had to be glued and then went in each wing half to hold the wings together.

You can measure the angle of the root ribs and come up with an angle for the dihedral braces

I have modded mine to have Dual Ailerons so the wing tray is bigger than the stock set up but I kept the piece and took a picture of it also.

You could also take the dihedral out of the wing and just make a straight joiner and a small filler piece to hide the resuliting gap in the top of the wing joint. I did this on one of mine and it improved the inverted flying performance and reduced roll coupling.

Well this is the complete .pdf manual that you can look at onlline which should help you quite a bit.

http://manuals.hobbico.com/hca/hcaa2016-manual.pdf

Yea the avistar doesn't have much dehidral anyways... wouldn't be tough to take it all the way down to 0

The wing joiner can be made "close enough" without plans. Measure the slot in the root rib to get the thickness and height.
Slide a ruler, stick, screwriver, etc into the slot to find out how far it goes into the wing. Measure both in case they are different and double the shorter measurement to get the length.
Guess at the dihedral angle, maybe 3 degrees, and draw the joiner on a sheet of cheap lite ply or even basswood.
Cut it out, see how it fits. Sand, adjust, maybe even remake it until you get a shape that works.
When you're happy, trace it onto good aircraft plywood and make the real part.

OR, got straight to the good wood and 'make it work.'

The aileron servo tray is just a 1/8 ply rectangle with a rectangular hole for the servo to fit in. Trace around the bottom of a servo case and add about 1/8 to the length and width for 'wiggle room' and cut the opening. Make the overall size about a half inch wider and an inch longer than the hole you made for the servo. You can make it even bigger and sand off what you do not need.

I would not even try to make a servo tray for the fuselage. You can run two 3/8 basswood sticks across the fuselage to mount the servos. Many of the SIG kits use this method. It is fairly easy and it works.

Welcome to the RCU forums, Bob.

All good advice above.
The manual specifies to sandwich-glue the two supplied 1/8" plywood braces.
Since you are making your own, I believe that you can make one piece from 1/4" plywood.

The attached schematic explains how you can measure the exact angle for the brace.
1) Put the two half-wings together with some tape on the bottom of the central joint (no gap).
2) Place the wing upside down and overhang one half-wing from an elevated surface.
3) Measure as indicated.
4) Calculate the offset of the end of the brace using the formula.
5) Make each half of the brace a littl eshorter than each wing pocket.
6) Try obtaining a tight and nice fit between the wing pockets and the new brace.

Best luck with your project!