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BYER DRIVE HURST MOTOR CAPACITOR

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#1 MASTERBUILDER

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Posted 08 November 2015 - 10:48 PM

I have built a equatorial mount and am using a Byer drive for the polar axis. It came with a Hurst AC synchronous motor, P/N 3002-025 115V 1/2 RPM, and the Hurst website says to use a .25mf capacitor with it. I went to Radio Shack and they had a .22uf polyester-film capacitor and it is rated for 50WVDC maximum. Will this work-or-does anyone know where I can get the correct capacitor to use with this motor? I am not really an electronics person.



#2 smeyer8015

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Posted 08 November 2015 - 10:56 PM

Try an appliance parts/repair place. That is a standard motor  capacitor.

 

Scott


Edited by smeyer8015, 08 November 2015 - 10:56 PM.


#3 Richard O'Neill

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Posted 08 November 2015 - 11:07 PM

 Appliance store prices tend to run quite high. You can get the capacitor at DigiKey, Mouser or Jameco on-line stores.



#4 DAVIDG

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Posted 09 November 2015 - 08:23 AM

 First of all the Radio Shack Capacitor will not work since it is rated at only 50 WVDC. You need a cap that is rate at over 100 volts since your powering the motor form 120 VAC. Common voltages 250, 400 and 600 WVDC and it is no problem to use a cap that has a higher rating then need.  Here is a source for them https://www.tubesand...pacitors?page=1

   Also you want a Non polarized type. 

 

                       - Dave 


Edited by DAVIDG, 09 November 2015 - 08:41 AM.


#5 mikey cee

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Posted 09 November 2015 - 10:43 AM

It should have come with one...mine did. ;)  Mike



#6 pbunn

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Posted 09 November 2015 - 11:08 AM

The capacitor should be rated a minimum of 150 volts AC or 250 volts DC. I likely have one that I will send you if you PM me.



#7 JohnH

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Posted 09 November 2015 - 11:13 AM

Yup  did the same for my own



#8 Jeff B1

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Posted 09 November 2015 - 11:29 AM

I usually use a .47uf 600V cap with the Hurst CA motors.  I think the original was .5uf 450V; but it has been a while so foggy memory takes over.  Those Hurst CA motors are hard to find and expensive. Find them at:  http://www.herbach.c...y_Code=SYNCTIME



#9 MASTERBUILDER

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Posted 09 November 2015 - 11:58 PM

Thanks everyone for your replies. I contacted Hurst and they are sending me the capacitor I need
for this motor--problem solved.


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