obviating large undercut inpinions with a small number of teeth—which hasa tendency to weaken the pinion—consists in divid-ing the working depth unevenly between the addendumand the dedendum, making the addenum of the piniongreater. The practice of making the addendum equal toseven-tenths of the… … Fit). 1—Tooth out-line of 18 tooth longaddendum pinion to seven-tenths. It appears that the values of the con-stant 1/ in the Lewis formula for gear strength havenever been worked out for this type of gear, and, there-fore, although it is quite obvious that in the case of apinion with a small…
Automobiles · Aeronautics
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