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Old 11-15-2006 | 11:57 AM
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wingspar
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From: Redmond, WA
Default RE: Don Smith A-26

I'll restart my build here. First off I've been out of the hobby for about 14 years. It's good to be cutting balsa again. being my favorite plane ordered out a set of Don Smith plans in 1/7 scale. This gives it a 120" wingspar. The first thing you have to remember is that this paln is a blow up of his 105" plan. Thus when you put a piece of 3/8" balsa on the plan it is samll. Or don't order out a 4.5" nose wheel as called out on the plan or you will be sorry[sm=cry_smile.gif]

I always start with the tail. This plan calls for building a top and bottom half. Seemed to go ok but when I was done the tail had warped and was unusable. Probabily something I had done or humidity, etc. I built a new stab by sandwiching in 1/32 plywood with two pieces of balsa at the rear. This made the rear stab very strong and it just won't bend or warp. I built the stab as one peice covered with 1/16" balsa. The plan shows the elevator hinge line very near the elevator leading edge. I choose to use a more scale approach. This should help relieve some servo load. Once done I fiberglassed the stab. I started using West System resin but it was alittle on the thick side even after warming it and tended to set up to fast as least for me. I then changed over to System 3 epoxy which was very thin and gave lots of time before it started to cure. No rushing needed with this.
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