I just tested mine and was getting 5156-5160 wfo! This is the motor rpm not spindle.
Anyone know off-hand what the shaft RPM is on that motor? There is no face-plate of course nor any specs at all on the motor. I'm working up pulleys for the drive system and need to know what the shaft RPMs are so I can figure the ratios I want.
I can't find anyone mentioning the RPM except in reference to the spindle speed which doesn't help.
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CNC: Making incorrect parts and breaking stuff, faster and with greater precision.
I just tested mine and was getting 5156-5160 wfo! This is the motor rpm not spindle.
A lazy man does it twice.
Perfect! Thanks for sharing that!
CNC: Making incorrect parts and breaking stuff, faster and with greater precision.
Do you mind sharing more detail on which motor this is? Maybe a link? Thanks!
Mine is a Weiss 1100watt. I had bought it direct from them when my G0704's motor went South.
A lazy man does it twice.
CNC, Mechatronics Integration and Custom Machine Design
“Logic will get you from A to B. Imagination will take you everywhere.”
Albert E.
If I had a tach I wouldn't be asking
Going to need one eventually but I'd like to start working up reasonable pulley models before then.
CNC: Making incorrect parts and breaking stuff, faster and with greater precision.
For around US$10.00 you can pick up one of the HDE Professional laser tach that are all over the web.
I found they are pretty darn accurate.
Al.
CNC, Mechatronics Integration and Custom Machine Design
“Logic will get you from A to B. Imagination will take you everywhere.”
Albert E.
Thanks for the lead. They are cheaper than the last time I looked! 5 years ago.
CNC: Making incorrect parts and breaking stuff, faster and with greater precision.
Finally got back around to this project again. I picked up a contact RPM meter and with it mated to the motor shaft I'm getting 3950RPM. So if I want 5500 RPM top end on the spindle that's a 1:1.4 ratio motor to spindle. I'll keep a low range as well that tops out at 2000 RPM for about a 1:0.52 ratio.
Gotta grind up a 40 degree form tool for making Poly-V belt pulleys. It's the house that Jack built!
CNC: Making incorrect parts and breaking stuff, faster and with greater precision.
I know this is older but just wanted to add I get 4700 RPM at 120v using a KBLC-225D (pretty sure that's right).