Re: Sync motor mod clarification

• To: tesla-at-pupman-dot-com
• Subject: Re: Sync motor mod clarification
• From: "R.E.Burnett" <R.E.Burnett-at-newcastle.ac.uk> (by way of Terry Fritz <twftesla-at-uswest-dot-net>)
• Date: Sat, 25 Mar 2000 13:13:32 -0700
• Approved: twftesla-at-uswest-dot-net
• Delivered-To: fixup-tesla-at-pupman-dot-com-at-fixme

Sorry, I didn't explain this very well.

The 1/8hp 1425RPM motor turns a 7" disk at 1500RPM with plenty of torque
spare,  (despite having only two flats machined into the rotor.)

However,  the 1/2hp 2850RPM motor has trouble holding a 7" disk at
3000RPM.  (This motor has 2 flats,  which is the correct number.)

My point was supposed to be that in going from 1500RPM to 3000RPM more
than 4 times as much power is needed to maintain sync at the higher speed.
I guess I'll have to look for a 1 horse motor,  and mod that :-(

							Cheers,

							-Richie,

> Original Poster: "Paul Mathus" <pmathus-at-learningco-dot-com>
>
>    Richie,
>    I don't understand.  Your 1/8 hp motor turns a 7" disc easily, but
>    your 1/2 hp motor is underpowered with a 7" disc?  That seems sort of
>    counter-intuitive.
>

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