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Old 02-10-2005 | 06:38 PM
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skylarkmk1's Avatar
skylarkmk1
 
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From: Festus, MO
Default RE: Super Cub kit?

Gary, Jeep and Khodges,

Like khodges said, the windsheild is easy. The RCM plan has on the plan the patterns for the windshield, side and top cabin windows. You do not need to make any molds, ovens or such. The directions say the same as khodges, make a paper pattern as a guide, trim it to fit and then cut your plastic (.015 butyrate). DO NOT USE CA, it will frost/fog the plastic. Use RC-56 or something similar. If you start to get a little cracking around the wing area, soften the plastic slightly with your heat gun, go slow, in brief applications of heat, you just want to relieve the stress at that area, not distort any of the windshield. Use a piece(s) of cardboard as a heat shield if neccessary to protect other portions from the heat. If you go to far, you may have to start over, but practice makes perfect (well almost, it took me 3 times before I was satistfied, try #2 would have been ok).

Making the cowl is no big deal except for the nose bowl. Make formers of the inside of the cowl at the rear and just behind the nose bowl and build a little structure to hold these in the proper relation. I used 2 layers of 1/64 ply wrapped around the form with epoxy beteween the layers. The nose bowl was carved from some soft balsa and glued to the front former. A ring former positioned properly inside the cowl makes it easy to attach the cowl to the firewall. An alternate method is to carve a foam cowl and coat it with fiberglass and then dissovle the foam away or use the cowl with foam as a pattern to make a female mold. Making molds for cowls have been covered in magazines and such, so I won't go into it here. My plan is to use a .52-.56 four stroke or maybe the RCV-.58 (the low profile appeals to me).

Also check the outlines of the rudder and stabilizer, they are a little different. Some fullscale J-3's converted into areobatic air planes have had Supercub cowls installed in place of the J-3 cowl, wings clipped, horner style wing tips, fusalage shortened, bungee changed to shock absorbers or ridgid landing gear etcetera. Find a plane to model and stick with it.

Another source of info, is the video, Bush Pilots of Alaska, distributed by KAKM Video. I found it in the local PBS store. It has Supercubs and Beavers in action in the bush.