These are plans for a vintage style mini motorcycle.
This little motorcycle has been designed to operate on wartime rations! Its construction is simple and light, but it is surprisingly practical and will carry a 250-lb. passenger without complaining. A 5/8-h.p. engine whips it along at a 25-m.p.h. clip and as for gas consumption—one gallon for every 120 miles, and we doubt if there's another motorcycle that can do better than that.
The Mite Cycle shown here was built by the author at a total cost of $50. It weighs 85 lbs. and is powered by a Briggs and Stratton engine. All unnecessary frills were forgotten in its construction, and the only tools used were a small lathe, a hack saw and a welding torch. The frame, being the foundation of the project, should be built first.
It is made of salvaged aircraft streamline tubing. 2-1/2"x.035 wall, procurable from any airport where small planes are repaired. These dimensions need not be adhered to exactly as a slightly larger or smaller tubing, or even a plain round tubing of 1-1/8"x.035 wall, is satisfactory. After procuring the tubing make a full-size drawing of the frame on the shop floor and cut the pieces to the angles and lengths given, fitting them to the drawing as you go. After this is completed, build the two lower frame pieces.
The base tube (11-1/2") is spotted to the forward tube going up to the fork neck and also to the rear tube going to the rear wheel hangers. Three spreaders are required and these are cut 4" long from 1" o.d. .035 wall tubing; two of these are located bet-ween the lower frame sides and spotted into position as noted. The forward tubes are cut on the insides and bent together to form the V as shown in the bottom view, then welded. The upper rear tubes then are laid together and the third spreader is located 9-3/4" c.c. to the rear of the taper terminating pont and welded into position.