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Re: Which gear pitch to use
"14.5 degree pa gears were standardized by the ASA in 1927...officially this form is not recommened for new designs as it is considered obsolete. The 20pa was standardized in 1932"- Handbook for the metalworking industries. Now, idk how often gears get 'redesigned' lol but im guessing its saying 20pa is the new standard.
On that same note, by what factor is a 20pa stronger than a 14.5pa gear of the same material?
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Rowan University '10 Mechanical Engineering
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