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(Solved): [4] Design a simple, spur gear train for a ratio of +8:1 and module of 4 . Specify pitch diameters ...
![[4] Design a simple, spur gear train for a ratio of \( +8: 1 \) and module of 4 . Specify pitch diameters and numbers of teet](https://media.cheggcdn.com/media/cac/cacf10bc-4811-42ac-9f9d-7704e6f6e6c4/php2UcxCI)
[4] Design a simple, spur gear train for a ratio of and module of 4 . Specify pitch diameters and numbers of teeth. Calculate the contact ratio. (Set pressure angle , number of pinion teeth , and assume you are designing an external set using idlers.)
Expert Answer
Given that :gear train G=8, module m=4 pressure angle Number of pinion teeth <21As we know, module where D and d are the pitch dia of gear and pinion and T and t are the number of teeth in gear and pinion respectively.