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Weiss VM32 CNC mill conversion

quitereal said:
Ya I collect em. Pull the driver board when I do. They vary in diameter from about 3-5 inches, may or may not have cooling fans on one or both sides of the shaft and may or may not have a rotary encoder or rpm sensor.
Click to expand...

You ever come across the upper control board for a Horizon CT 12.1 (Same as the Livestrong LS12.9T)? I'd be interested in purchasing the upper control board from you or anyone that has one.

I picked up a CT12.1 for free to harvest the motor out of it. This unit is brand new. Only used to hand clothes on....lol. I just could not strip it down.

The visual giveaway on these units is the yellow trim on the upper supports. They also usually have the bigger 2.25 and 3 hp motors in them. (also require a PWM signal to control the motor control board)

Screenshot 2024-11-05 at 18-45-02 Horizon CT 12.1 - Google Search.png


Screenshot 2024-11-05 at 18-41-18 Marketplace – Treadmill Facebook.png
 
Quick-n-dirty:
The Johnson motor at 90vdc @ 19 amps is about 1700 watts, 750 watt = 1 hp, so the 2.25 hp rating us probably legit.The kicker is the duty factor of 25%, so this motor is capable of 2hp output for maybe 15 minutes, then it needs to rest and cool down for 45 minutes.

Realistically, on a VM32 the treadmill motor is likely about the same amount of grunt as the original factory 2hp brushless dc motor.

@DavidR8 , does your machine have the original bldc motor?
 
whydontu said:
Quick-n-dirty:
The Johnson motor at 90vdc @ 19 amps is about 1700 watts, 750 watt = 1 hp, so the 2.25 hp rating us probably legit.The kicker is the duty factor of 25%, so this motor is capable of 2hp output for maybe 15 minutes, then it needs to rest and cool down for 45 minutes.

Realistically, on a VM32 the treadmill motor is likely about the same amount of grunt as the original factory 2hp brushless dc motor.

@DavidR8 , does your machine have the original bldc motor?
Click to expand...
It does have the original motor. Rated at 1.5 Kw IIRC.
It's unlikely that I'd ever push it to it's max rating, the mill just is not beefy enough to be hogging off major metal.
 
Watching Dazecars tonight I learned how to calculate torque to allow for fair comparisons across motors.
The equation is: T = (HP X 5252)/RPM
For example
The eBay motor I linked to above is 2.5 HP at 4000 RPM. Calculation gives a torque value of 3.28.
In comparison, The Johnson motor is 2.25 HP at 3150 RPM. Calculation give a torque value of 3.75.
All things being equal the Johnson motor would be a better choice.
 
DavidR8 said:
Watching Dazecars tonight I learned how to calculate torque to allow for fair comparisons across motors.
The equation is: T = (HP X 5252)/RPM
For example
The eBay motor I linked to above is 2.5 HP at 4000 RPM. Calculation gives a torque value of 3.28.
In comparison, The Johnson motor is 2.25 HP at 3150 RPM. Calculation give a torque value of 3.75.
All things being equal the Johnson motor would be a better choice.
Click to expand...
Are ya thinking of going original motor then? The three I had picked out were:
2.5hp@4000 same as ebay motor
2.25@3150 johnson same as original
2.5@5400 less torque
It sounds like the original might be your best bet, no adapting a lh thread to some sort of collet...
 
quitereal said:
Are ya thinking of going original motor then? The three I had picked out were:
2.5hp@4000 same as ebay motor
2.25@3150 johnson same as original
2.5@5400 less torque
It sounds like the original might be your best bet, no adapting a lh thread to some sort of collet...
Click to expand...
I'm still weighing options. I got a good quote for a Bergerda 1.5Kw AC servo with driver that would be a 'plug-and-play' option for me with the Masso board. No additional boards to buy.
 
Tony Foale’s lathe els replaces the handwheel with rotary encoders. This allows full manual control but without any tactile feedback. I’m on the fence whether that is good or bad.
[
 
Johnwa said:
This allows full manual control but without any tactile feedback. I’m on the fence whether that is good or bad.
Click to expand...

I read my machines by tactile and aural feedback. How else can I know that my cutter is happy? Too many times that isn't what the charts say it should be. So I am not on the fence. Besides, I like operating handles and dials.
 
DavidR8 said:
Unfortunately we don't have friendly neighbourhood scrappers.... that means I take the rest of it to the recyclers
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wow. and sad. we have several fellows that come thru our neighbourhood every week looking for salvage, so as a consequence if I spot anything I want to disassemble for even the tiniest part the only thing stopping me is my laziness.
 
TorontoBuilder said:
wow. and sad. we have several fellows that come thru our neighbourhood every week looking for salvage, so as a consequence if I spot anything I want to disassemble for even the tiniest part the only thing stopping me is my laziness.
Click to expand...
A few years back our municipality released a report that said it cost well over $100,000/annum to clean up all of the sofas, bed frames, dressers, TVs etc that get left at the curbside with "Free" signs on them.
 
DavidR8 said:
A few years back our municipality released a report that said it cost well over $100,000/annum to clean up all of the sofas, bed frames, dressers, TVs etc that get left at the curbside with "Free" signs on them.
Click to expand...
You know the old story about nobody taking a sofa off the street that has a "Free" sign on it....all you have to do is change the sign to "For Sale, $250" and somebody will steal it the first night.
 
This is the output end of the 48V, 20A power supply that came with the CNC kit I bought.
Any idea how I should protect these terminals from accidental contact?
IMG_1739.jpeg
 
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