[photomankc]

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.

[Fastest1]

I just tested mine and was getting 5156-5160 wfo! This is the motor rpm not spindle.

[photomankc]

Perfect! Thanks for sharing that!

[rs4race]

Do you mind sharing more detail on which motor this is? Maybe a link? Thanks!

[Fastest1]

Mine is a Weiss 1100watt. I had bought it direct from them when my G0704's motor went South.

[Fastest1]

Here are the 2 motors side by side.



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[Al_The_Man]

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.

It appears to be a DC brushed motor so a simple way if the motor is off the machine is to apply say a 12v DC source, automotive battery etc, and use a tach to detect the rpm and then extrapolate to the maximum applied voltage (e.g. 110v?).
Al.

[photomankc]

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.

[Al_The_Man]

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.

[photomankc]

Thanks for the lead. They are cheaper than the last time I looked! 5 years ago.

[photomankc]

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!

[luv2ride]

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).