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Goodell Pratt 125 Bench Lathe #6: Over complicating things [updated]

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Blog entry by Rick M. posted 519 days ago 1629 reads 0 times favorited 2 comments Add to Favorites Watch
« Part 5: Pulley glue-up and guess the wood. Part 6 of Goodell Pratt 125 Bench Lathe series Part 7: DC Motor upgrade »

[UPDATE: Scrap this idea, it doesn’t work. When I first tested the vibration was minimal but now it’s setting off an oscillation that makes it unworkable. Guess I will go back to over-complicating.]

The motor mount I built was too low and allowed the pulley belt to rub the lathe frame. In the last entry I mentioned there were two solutions to the problem:

1: Create a raised platform for the motor that will bring it to the height of the lathe pulleys.
2: Build a jackshaft that will transfer power from the motor to the lathe.

With my talent of over complicating things naturally I chose option 2. After considerable thought during cold weather downtime I changed my mind and chose option 1.

Truing the driver pulley reduced initial vibration considerably but that pulley isn’t meant to be permanent, I still plan on making a wooden cone pulley but I need to address a few other things first. This motor runs hot and I suspect it will not last long. I have a single speed 1/3HP motor to fall back on but it runs the opposite direction so I will need to reverse it before I can use it. There’s a good bit of weight on the single Stanley brass hinge holding the mount to the stand, hopefully it’s up to the task.

-- |Statistics show that 100% of people bitten by a snake were close to it.|



2 comments so far

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Rick M.

3747 posts in 963 days


#1 posted 517 days ago

Back in business. Gave up on the stand.

-- |Statistics show that 100% of people bitten by a snake were close to it.|

View Rick M.'s profile

Rick M.

3747 posts in 963 days


#2 posted 516 days ago

Scavenged a 1 HP DC motor from a treadmill today and already have it hooked up to the lathe. It is way more powerful than the 1/3 HP motor. Yesterday I could barely spin a 4×3 block of ipe, today it doesn’t even slow when cutting. Still need to do some tweaking though.

-- |Statistics show that 100% of people bitten by a snake were close to it.|

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