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Top trunnion thread pattern

Posted: Mon Mar 26, 2018 11:08 am
by RobThomas
Does anyone know the thread pattern on the Minor suspension legs? It is ACME?

I have some Morris MO legs to rebuild and need to cast some new trunnions in Bronze.

Thanks.

Rob

Re: Top trunnion thread pattern

Posted: Fri Mar 30, 2018 11:23 am
by RobThomas
Further study shows some differences with some of the legs here. Morris MO seems to give 13/16 as the thread size (0.815 with 35 thou total lost off of the tips) and still 11 tpi. This suggests that a Minor trunnion can be oversized to fit the Morris oxford, as soon as I can find a suitable tap.

Re: Top trunnion thread pattern

Posted: Fri Mar 30, 2018 11:45 am
by RobThomas