Woodstock Glider

On Thursday, May 10, 2018 at 11:35:16 PM UTC-4, Bob Kuykendall wrote:
On Thursday, May 10, 2018 at 7:16:17 PM UTC-7, son_of_flubber wrote:
symmetry is important.

Balance is important. Symmetry is way overrated, and I have the check templates to prove it.

--Bob K.

Please say a little more about how this works. I was thinking that precision and symmetry affects the left right balance in an aircraft.

Guys, we're talking about a wooden glider that is covered with plywood and fabric. Space age technology is not required. Your precision cut ribs will be cut in half, then glued to the spar........I'd be more concerned about maintaining a true cord line in the vertical assembly process. Jim's instructions were to glue the master rib sheet to 1/8 birch, then nail two blank rib pieces of 1/4 plywood, then cut to within 1/16 with a band saw, followed by disc sanding down to final size. Then nail two more blanks to the master and repeat the process. After all ribs have been glued to the spar, I like to level everything with a 36" sanding board running it fore and aft as I slowly move down the wing.
Hope this helps,
JJ

On Thursday, May 10, 2018 at 9:33:49 PM UTC-7, son_of_flubber wrote:

Please say a little more about how this works. I was thinking that precision and symmetry affects the left right balance in an aircraft.

The gist of it is in Eric Stewart's article in the March 2018 issue of Soaring.

--Bob K.