- Joined
- Jan 6, 2017
- Messages
- 1,220
But, I got it done. Finally!
Anyone else done something like this? If so, how did you do it?
I picked up a Helmke Plus 3hp 3 phase motor on ebay. It was 200$ with free shipping from Germany. Kinda baffling that they could sell a 40lb motor, and ship it from Europe for that price. Oh, and it only took 5 days to get here.
![](/proxy.php?image=https%3A%2F%2Fi.postimg.cc%2FN0FGyts1%2FIMG-20210603-162658086.jpg&hash=fa97cf68e6f9977aa3242032c3bf2763)
It has a standard 100l b5 frame and 28mm shaft, so I hand do do alot of work to fit it to the PM935ts. Including boring the pulley and broaching a new keyway.
I had to fill in 2 bolt holes, and build up alot of metal with a Tig welder to create the two 1/2-13" threaded holes needed. Welding cast aluminum kinda sucks, and I got plenty of porosity.
![](/proxy.php?image=https%3A%2F%2Fi.postimg.cc%2FZqsRjR77%2FIMG-20210603-162707107.jpg&hash=a71a1af32e8f23f4391ad7835b1a84c7)
![](/proxy.php?image=https%3A%2F%2Fi.postimg.cc%2Fd0fsrf3g%2FIMG-20210603-162712637.jpg&hash=9547b63bb865fa92885a1019f046d8da)
On the right side, I had to make a new bracket/mount and belt tensioning lever. I ended up using a scrap stump from a Krieger 5r .30 barrel, turned threaded and knurled to use as a lever.
![](/proxy.php?image=https%3A%2F%2Fi.postimg.cc%2FkgXqZCtk%2FIMG-20210603-162721752.jpg&hash=3f0b7c850b4dd2ca849f16fe9dd406bf)
![](/proxy.php?image=https%3A%2F%2Fi.postimg.cc%2Fx1xnVZvq%2FIMG-20210603-162731642.jpg&hash=d9af947ad9f40fe4d9f9f8be2b6eff43)
![](/proxy.php?image=https%3A%2F%2Fi.postimg.cc%2F5tX14mgg%2FIMG-20210603-162633099.jpg&hash=70523f288352c8cf32f09e0c39b8d171)
This job was kinda tough. But it's finally done. I got to use it for a few hours yesterday to make some lead molds for a local company that makes leather saps. It seems to work great, so far.
With the vfd set to a 25hz min and 75hz max, between the step pulleys, back gear and variable speed motor I have a speed range from 8 rpm up to 3600rpm.
Anyone else done something like this? If so, how did you do it?
I picked up a Helmke Plus 3hp 3 phase motor on ebay. It was 200$ with free shipping from Germany. Kinda baffling that they could sell a 40lb motor, and ship it from Europe for that price. Oh, and it only took 5 days to get here.
![](/proxy.php?image=https%3A%2F%2Fi.postimg.cc%2FN0FGyts1%2FIMG-20210603-162658086.jpg&hash=fa97cf68e6f9977aa3242032c3bf2763)
It has a standard 100l b5 frame and 28mm shaft, so I hand do do alot of work to fit it to the PM935ts. Including boring the pulley and broaching a new keyway.
I had to fill in 2 bolt holes, and build up alot of metal with a Tig welder to create the two 1/2-13" threaded holes needed. Welding cast aluminum kinda sucks, and I got plenty of porosity.
![](/proxy.php?image=https%3A%2F%2Fi.postimg.cc%2FZqsRjR77%2FIMG-20210603-162707107.jpg&hash=a71a1af32e8f23f4391ad7835b1a84c7)
![](/proxy.php?image=https%3A%2F%2Fi.postimg.cc%2Fd0fsrf3g%2FIMG-20210603-162712637.jpg&hash=9547b63bb865fa92885a1019f046d8da)
On the right side, I had to make a new bracket/mount and belt tensioning lever. I ended up using a scrap stump from a Krieger 5r .30 barrel, turned threaded and knurled to use as a lever.
![](/proxy.php?image=https%3A%2F%2Fi.postimg.cc%2FkgXqZCtk%2FIMG-20210603-162721752.jpg&hash=3f0b7c850b4dd2ca849f16fe9dd406bf)
![](/proxy.php?image=https%3A%2F%2Fi.postimg.cc%2Fx1xnVZvq%2FIMG-20210603-162731642.jpg&hash=d9af947ad9f40fe4d9f9f8be2b6eff43)
![](/proxy.php?image=https%3A%2F%2Fi.postimg.cc%2F5tX14mgg%2FIMG-20210603-162633099.jpg&hash=70523f288352c8cf32f09e0c39b8d171)
This job was kinda tough. But it's finally done. I got to use it for a few hours yesterday to make some lead molds for a local company that makes leather saps. It seems to work great, so far.
With the vfd set to a 25hz min and 75hz max, between the step pulleys, back gear and variable speed motor I have a speed range from 8 rpm up to 3600rpm.
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