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Hangar Aircraft Category Date Preview
hjlittmanGuillows Series 300 - Piper Cub 95Build06-Mar-12 16:43
Views : 646
Molds for the wing tip laminations.
hjlittmanGuillows Series 300 - Piper Cub 95Build06-Mar-12 16:42
Views : 615
Printing scans of other parts of the plans I glued them to foam core board and cut them out to make molds for outline laminations.
hjlittmanGuillows Series 300 - Piper Cub 95Build06-Mar-12 16:40
Views : 634
Sand the stack right to the pattern, cut the spar notches, pull the pins and you have a stack of 20 identical ribs. Then I cut the four smaller tip ribs. The whole process to make 24 ribs took less than 1/2 hour.
hjlittmanGuillows Series 300 - Piper Cub 95Build06-Mar-12 16:38
Views : 671
Cut down the rear of the stack to the pattern.
hjlittmanGuillows Series 300 - Piper Cub 95Build06-Mar-12 16:37
Views : 668
I turned the stack over and using a fresh blade in my Xacto knife I cut the front curve of the stack down to the pattern. If I had a miniture belt sander this would have gone a lot quicker.
hjlittmanGuillows Series 300 - Piper Cub 95Build06-Mar-12 16:35
Views : 636
Using my razor saw and a "Cleveland notcher" I cut the bottom spar notch and inserted a piece of spar stock to help keep the stack in alignment.
Hangar Aircraft Category Date Preview
hjlittmanGuillows Series 300 - Piper Cub 95Build06-Mar-12 16:34
Views : 634
The rib blanks were stacked evenly and stuck together with some new, sharp, pins. If I had needed more ribs I would have glued them together with Testor's "green glue". That way, when you are done shaping and sanding you can take them apart with acetone.
hjlittmanGuillows Series 300 - Piper Cub 95Build06-Mar-12 16:31
Views : 601
I use the stacked rib method for cutting ribs on constant chord wings. The rib patterns were cut out from scans of the plans, glued to heavy card stock, cut out, and glued to the rib blanks that would be on the ends of the rib stack.
hjlittmanGuillows Series 300 - Piper Cub 95Build06-Mar-12 16:29
Views : 619
Since I am building "scratch" , from the plans, I need to cut out some parts. Using my balsa stripper and miter box I cut out 24 rib blanks. Since I am lightening the structure I cut only the root ribs and strut attachment ribs of 1/16" sheet. All the rest are 1/32" sheet
hjlittmanGuillows Series 300 - Piper Cub 95Build06-Mar-12 16:26
Views : 671
Building the redrawn cabin sides.
hjlittmanGuillows Series 300 - Piper Cub 95Build06-Mar-12 16:26
Views : 637
The next thing was to re-draw the cabin side, part "H", so that I would have the L-4 greenhouse cabin.
hjlittmanGuillows Series 300 - Piper Cub 95Build06-Mar-12 16:24
Views : 702
I'm building another 300 Series Super Cub, but this time it's kit bashed into an L-4 Grasshopper for the Blacksheep Squadron "Grasshopper Challenge" on March 17th. Actually, any plane that had an "L" designation is eligible, and my Air Force Beaver is Ok (L-20), I thought this one would fly even better. I found reliable drawings of the L-4, traced the critical sections, the nose and greenhouse cabin, enlarged them to the proper scale, printed them on tracing paper, and layed them over the Guillow's plans to see if the kit bash was possible. The nose ended up with exactly the same length (moment) so I went ahead with my project.
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