Increasing speed by 50% on mid 50's lathe.

Larry on Lake Superior · Apr 2, 2019

I have a P&W Model C lathe with a top speed of 1000 RPM. Sales literature shows 1500 RPM as a factory "ONLY" installed option.
Do you think I will cause problems by switching out the pulleys on the motor and headstock to get 1500 RPM?

Thanks,
Larry

michiganbuck · Apr 2, 2019

I'm not the lathe guy but here find the manual

http://vintagemachinery.org/pubs/1412/7012.pdf

RC Mech · Apr 2, 2019

Quick cursory scan of the manual linked above yields on p.28 under Spindle Speeds: "Driving pulley supplied with correct diameter to produce on range or the other as desired."

Ergo, you can change the pulley only w/no ill effects.

johnoder · Apr 2, 2019

I'll ask something obvious. Model C head stock has pump LOW in back. Do you know for a fact that it is working to get oil way up to the top where its distributed?

Larry on Lake Superior · Apr 3, 2019

RC Mech your cursory scan is far superior to mine as I missed this completely when I checked out the manual on the OWWM site. OWWM also has the Model C brochure where the 1500 RPM is ONLY a factory installed option.
Thanks for the heads up.
Larry

SBAER · Apr 3, 2019

I would speed it up to make the machine more useful, I imagine it will only run 10 hours a year as a hobby machine

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Increasing speed by 50% on mid 50's lathe.

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