This section is from the book "The Boy Mechanic Vol. 2 1000 Things for Boys to Do", by Popular Mechanics Co.. Also available from Amazon: The Boy Mechanic, Vol2: 1000 Things for Boys to Do.
Any boy who can drive a nail and bore a hole can have a bobsled on short notice. The materials necessary are four good, solid barrel staves; four blocks of wood, 4 in. long, 4 in. wide, and 2 in. thick; two pieces, 12 in. long, 4 in. wide, and 1 in. thick; one piece, thick; and a good board, 4 ft. long, 12 in. wide, and 1 in. thick.
Ill: A Bobsled of Simple Construction Using Ordinary Barrel Staves for the Runners
The crosspieces and knees are made with the blocks and the 1-in. pieces, 12 in. long, as shown; to which the staves are nailed for runners. One of these pieces with the runners is fas-. tened to one end of the board, the other is attached with a bolt in the center. The 1 3/4 by 2-in. piece, 12 in. long, is fastened across the top of the board at the front end. A rope fastened to the knees of the front runners provides a means of steering the sled.
The sled can be quickly made, and it will serve the purpose well when an expensive one cannot be had. - Contributed by H. J. Blacklidge, San Rafael, Cal.