Goodell Pratt 125 Bench Lathe #7: DC Motor upgrade

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Blog entry by Rick_M posted 02-11-2013 08:51 AM 4029 reads 2 times favorited 6 comments Add to Favorites Watch
« Part 6: Over complicating things [updated] Part 7 of Goodell Pratt 125 Bench Lathe series Part 8: New Paint »

Last update I had given up on the lathe stand and moved everything to the workbench but I still didn’t have a good system for variable speed. Well, no more cone pulleys, countershafts, or underpowered AC motors… I bought an old treadmill with a 1 HP DC motor and hooked it up.

The block of ipe you see on the lathe was the breaking point. The 1/3 HP motor would just turn it and once I laid tool to wood, everything would slow to a crawl. That prompted me to go find a proper motor. The new (to me) DC motor doesn’t even know the ipe is there, doesn’t care. It’s also scary fast for a lathe that was designed for treadles and jackshafts, gotta keep the power down.

I reused parts of the frame and original motor mount. It’s ugly but I’ll take care of that.

Basic box over the frame. Next I’ll enclose the motor and build a control panel.

Stay tuned!


6 comments so far

View REO's profile


927 posts in 1946 days

#1 posted 02-11-2013 12:42 PM

Looks terrific!

View JoeinGa's profile


7732 posts in 1879 days

#2 posted 02-11-2013 12:51 PM

Oh yeah! You’ll be turning bowls and mugs in no time now!
Good on you!

-- Perform A Random Act Of Kindness Today ... Pay It Forward

View OnlyJustME's profile


1562 posts in 2249 days

#3 posted 02-13-2013 01:39 AM

now i have to keep an eye out for a free treadmill on the list.

-- In the end, when your life flashes before your eyes, will you like what you see?

View Rick_M's profile


10818 posts in 2252 days

#4 posted 02-13-2013 05:06 AM

Good luck. The days of free treadmills aplenty are long gone; or at least they are around here. Ten years ago you couldn’t give one away but now it’s hard enough to find one under $100.


View JKMDETAIL's profile


205 posts in 1527 days

#5 posted 02-15-2014 12:17 PM

Wow love the idea. Howdo you know the horse power of those motors and capacity of the variable drive?

View Rick_M's profile


10818 posts in 2252 days

#6 posted 02-15-2014 04:54 PM

HP rating and amperage is on the motor plate.


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