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Re: Instead of Repairs, Can Mark V Run Lowest Speed Only?
Posted: Mon Sep 07, 2020 1:48 pm
by DLB
JPG wrote:Hope I got the decimal points correct this time!
I would not normally have said anything but for some reason I recognized that decimal as 5/32" Kind of weird. Facts that clutter our brains... Like knowing what 2 to the 13th power is when I want to know is where I left my 5/8" 1/2" drive socket!
But since you mentioned it I think you did make a decimal place error above. Should be 2 ten-thousandths, I think.
-David
Re: Instead of Repairs, Can Mark V Run Lowest Speed Only?
Posted: Mon Sep 07, 2020 5:16 pm
by JPG
Yep! Screwed it up again!
BTW ALWAYS set me straight/correct me.
(assuming I AM 'incorrect')
Re: Instead of Repairs, Can Mark V Run Lowest Speed Only?
Posted: Mon Sep 07, 2020 10:49 pm
by DLB
I measured a motor output shaft and there was no change in diameter near the end, as expected. Less expected, at least to me, I measured it at 16mm. I measured it with two analog calipers because of the results with the first. The second calipers have both inch and metric scales which clued me in. I cannot currently explain the difference in our results. The motor I measured is an Emerson, the sheave matched.
- David
Re: Instead of Repairs, Can Mark V Run Lowest Speed Only?
Posted: Tue Sep 08, 2020 12:33 pm
by JPG
Interesting!!!
The rotor shaft is 17mm and is machined to 5/8 at the rear bearing location and the output shaft.
That is why the Emerson requires two different bearings. 17mm output end and 5/8 switch end. The start switch stuff is 5/8.