Each cub had a Catalytic heater under the cowling at night. An engine cover and a mesh wing cover, with spoilers, were used. The tents were designed, constructed, and tested by the group. (Yes, sewing was involved!) They were made from Cotton Duck Cloth, which was then waterproofed. A nylon fly was then sewn, waterproofed, and fitted over the entire structure. The tent was supported by four aluminum poles, held at the top by a welded tubular spider. The tent stoves were Yukon 1950 gravity fed burners. The burner was inside a sheet metal designed box with folding legs. The stove burned Avgas, about 1 gal per night of use. Here is a picture of my tent in a pretest. Also a picture of the stove and sleeping bag being pretested.The nylon fly shown is from one of the other cub tents.