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Dumas Kit #1803, Pietenpol Air Camper by LASTWOODSMAN. Viewed 340 times.
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LASTWOODSMAN20-Jul-17 12:44
Back in my balsa dust-filled apartment woodshop, I ended up sticking about one gram of modeling clay under the fuse rear end, and around the wire skid (for a tail wheel), and balanced it out perfectly. The total weight was now 26 grams, including 2 grams of two strands of 1/8" rubber , each strand of rubber 12" long (the prop hook to rear motor peg mount was 6 1/2" ), and including the one gram of ballast modeling clay. I then went back out to the Cricket Wicket, and I was only lucky enough to get a 12 second flight, because it was climbing too much and was "porpoising" too much. Then I followed the fantastic Dumas instruction segment for flight trimming, titled "FLYING THE MODEL" ( I had photocopied the page, highlighted the important sections, and brought it with me), and then "added down thrust by placing a small balsa shim behind the cowl at the top". I had also brought a sanding block, a permanent marker, scissors, and a small piece of 1/16" balsa plate. I sanded it to a sharp acute angle, traced the edge of the top half of the male (tenon) nose block {that plugs into the female (mortise) hole in the forward fuse bulkhead former}, cut it out with scissors, and stuck it behind the nose block at the top, after winding with a 15:1 winder, and a winding stooge.
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