TY - Generic T1 - Improvements to the Tucker motor-sled to surmount difficulties in traversing powder snow T2 - 8th Annual Western Interstate Snow Survey Conference Y1 - 1940 A1 - Ryan, J.T. KW - Over snow vehicles, Tucker snow-sled AB - The Tucker motor-sled was demonstrated on the slopes of Mt. Rose region south of Reno. The motor-sled made 3 runs. It is driven by a helical thread wound on a revolving drum, and is powered by a 15 hp air-cooled gasoline engine. total weight is 500 lbs. The sled showed a tendency to slip sideways on a 12% grade. The drum dug the snow away from itself when breaking through hard snow crust, or encountering soft snow. The machine is light, built sturdy, has a cruising speed of 5 mi/hr, and can carry 2 men up a 30-40% grade without great effort. More weight caused the motor-sled to break through the snow crust and stall. It is questioned that improved performance in soft snow could be obtained if the major portion of the weight were carried by the out-board skis instead of on the drum.Discussion by E.M. Tucker indicates that the sled is being redesigned and a Franklin air cooled motor of 80 hp is being installed at no addition in weight. JF - 8th Annual Western Interstate Snow Survey Conference T3 - Proceedings of the 8th Annual Western Interstate Snow Survey Conference PB - American Geophysical Union, Transactions, Part III-B: CY - Seattle, Washington UR - sites/westernsnowconference.org/PDFs/1940aRyan.pdf ER - TY - Generic T1 - Attachment of cutters and couplings; spanner wrenches T2 - 5th Annual Western Interstate Snow Survey Conference Y1 - 1937 A1 - Ryan, J.T. KW - Snow sampler coupling joints, Snow sampler cutter joints, Snow sampler test results AB - Experiments were conducted to develop a cutter joint between duraluminum tub and steel cutter to make a replacement of the cutter possible under field conditions. A threaded bushing provides a simple, positive, and reliable connection but usually requires a special wrench for removal. A soldered joint using aluminum solder produces greater strength and can easily be replaced by heat application. Soldering of couplings is recommended. Two models of a wrench designed to increase leverage and eliminate the probability of the pin being forced out of the hole were tested and found satisfactory. Their overall length is 8.5 in. and will not slip off the joint when in use. Information on aluminum solder and source of supply are included. JF - 5th Annual Western Interstate Snow Survey Conference T3 - Proceedings of the 5th Annual Western Interstate Snow Survey Conference PB - American Geophysical Union, Transactions, Part II: CY - Davis, California ER -