RPMs?

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Joined: Mon Jan 24, 2011 11:54 am

RPMs?

Postby ktatem » Mon Jan 24, 2011 12:47 pm

Hi Maurice! I'm in the market for an electric wheel and have heard good things about the Eel. I was wondering what the RPM figure is on this, do you happen to know?

Thanks!
Kellie

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Joined: Thu Nov 26, 2009 11:04 am

Re: RPMs?

Postby Maurice » Tue Jan 25, 2011 11:52 am

There is actually no easy answer to this question. The motor is 1600 RPM and the gear reduction is about 8:1 so you might thing 200 RPM, but that would be a maximum and under load it is less. 200 RPM would be too fast anyways. I could choose a typical load and try to measure the RPM, but it's too fast to visually do this so I'd need make a device to measure that. I probably should do this, but I haven't yet. In general the people I've had test this don't go max speed because they can't keep up with it. My general feel is that max speed is about 2x the speed of a traditional spinning wheel.

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Joined: Fri May 25, 2012 3:19 pm

Re: RPMs?

Postby plews » Fri May 25, 2012 3:53 pm

Hi Maurice

The new motor runs at 2350 RPM max with no load. I believe the ratio of the 4" spinner sheave to the 2" motor sheave would be 2:1. That would be a theoretical rate 1175RPM. Based on this belief, I'm switching to a 2.5" motor sheave which should max out theoretically at 1469RPM with no slippage. Are my calculations valid?
I thought the faster speed might be useful for plying - especially after watching th unattended plying video on YouTube.
plews

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Re: RPMs?

Postby Maurice » Sat May 26, 2012 3:09 pm

Those calculations seem correct. Remember that even a small load will often slow a motor down significantly. I have not measured this and it changes for each motor.

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