Phoenix Eagle causes vibration w/ 300 RPM motor

Phoenix Eagle causes vibration w/ 300 RPM motor

Postby louie3 » Tue May 14, 2019 12:49 pm

Folks,

Anyone who is using a Phoenix Eagle or Falcon with a 300 RPM motor have vibration in motor?

Had vibration bad enough to hear when playing record.

By-passed Eagle, plugged motor direct to wall....vibration gone.

Matt, Harry, anyone?
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Re: Phoenix Eagle causes vibration w/ 300 RPM motor

Postby Brf » Tue May 14, 2019 1:23 pm

The fact that the motor runs fine plugged directly into the wall would suggest a problem with the Phoenix.

Bill, the former owner of Phoenix, does drop by this forum on occasion but you might have better luck if you post your question on DiyAudio.com where he is a frequent participant (user name Pyramid).

Have you tried unplugging the Eagle and then powering it back up?
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Re: Phoenix Eagle causes vibration w/ 300 RPM motor

Postby louie3 » Tue May 14, 2019 1:53 pm

Thanks, BRF,

I will try re-booting the Phoenix.

It is just that the motor is vibrating more with the Phoenix vs. plugged into the wall.

(And runs slightly fast plugged into the wall... :D
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Re: Phoenix Eagle causes vibration w/ 300 RPM motor

Postby Packgrog » Wed May 15, 2019 4:14 pm

Can you share video of the motor operating with and without the Eagle? Where did you get the Eagle? Have you done a factory reset (if you got it used, the voltage may have been changed)?

The Falcon would not work with the 300RPM motor, BTW. The 300RPM motor requires too-high wattage for the Falcon, which is why the Eagle was created to fill that gap.

But yes, Bill is pretty responsive to those kind of questions.
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Re: Phoenix Eagle causes vibration w/ 300 RPM motor

Postby louie3 » Mon May 27, 2019 12:49 pm

Sorry for the delay....too many records to listen to...

The Eagle was bought new. I solved the problem (mostly) by re-mounting the motor, damping with sorbothane and Dynamat.

I did reset the Eagle to factory, made a tiny difference.

FWIW, the Eagle has been running my Lenco since new, with no problems at all.

I am afraid the VPI motor is just noisy.
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Re: Phoenix Eagle causes vibration w/ 300 RPM motor

Postby Johnny » Mon May 27, 2019 1:47 pm

louie3 wrote:Folks,

Anyone who is using a Phoenix Eagle or Falcon with a 300 RPM motor have vibration in motor?

Had vibration bad enough to hear when playing record.

By-passed Eagle, plugged motor direct to wall....vibration gone.


louie3 wrote:Sorry for the delay....too many records to listen to...

I am afraid the VPI motor is just noisy.


Plugged directly into the wall no motor vibration. Experienced motor vibration when used with the Phoenix. Sherlock Holmes would deduce a problem with the Phoenix and not the VPI motor.
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Re: Phoenix Eagle causes vibration w/ 300 RPM motor

Postby louie3 » Fri May 31, 2019 10:41 am

Please send Sherlock contact info.
thankyouverymuch.
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Re: Phoenix Eagle causes vibration w/ 300 RPM motor

Postby Brf » Fri May 31, 2019 10:43 am

louie3 wrote:Please send Sherlock contact info.
thankyouverymuch.


221B Baker Street
London, England
;)
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Re: Phoenix Eagle causes vibration w/ 300 RPM motor

Postby louie3 » Tue Jun 04, 2019 10:27 am

here's a bit of an update.

The VPI motor does run slightly quieter plugged into the wall.

But it runs at 33.517 or so, not 33.3

So...use Eagle with more noise?

Plug into wall with slightly fast speed?

SOTA motor and Condor?

Get my Lenco motor rebuilt?

Just enjoy the Oracle and forget about it?
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Re: Phoenix Eagle causes vibration w/ 300 RPM motor

Postby Packgrog » Tue Jun 04, 2019 10:37 am

TBH, SOTA motor and Condor would probably be the best. Even when running properly, an AC motor is going to be noisier.

One thing to consider as well is that the Hurst motor is likely to vibrate more when being under-driven that much. It'd be a bit like lugging an engine bicycle in a too-high gear. 0.2 RPM difference is not small. I assume you're using the HRX pulley if you can't adjust the speed a little at the pulley to get a closer speed match.

But yeah, Condor at BLDC motor would likely work much better. Good torque, way lower vibration than any AC motor.
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