Spark plug
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- Durham, England
I think you have linked to the wrong page. His photo clearly shows a helical gear whereas the calculator is for a straight cut spur gear. Please can you repost the correct one.
good point, you indeed correct that calculator won’t work for a helical gear. I can’t find another that will work easily as there are too many variables involved with the helical gear
If you could first determine whether the gear is metric (MOD) or imperial (DP) then it would be possible, but by the time you calculate that, you will already have all the answers.