Vigor Motor

Discussion in 'Horological Tools' started by Yastrimsk, Feb 16, 2020.

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  1. Yastrimsk

    Yastrimsk Registered User

    Jan 1, 2014
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    Hello. I have an old Vigor lathe motor. It’s 115 volts ac/dc. My question is, how many amps and what hp is it ? I’m interested in purchasing a variac speed controller and concerned about getting one that’s safe for the amps that I have. I’m looking for plug and play, no complicated altercations. Also, is there any basic maintenance that can be done to these motors, do the need oil or grease ? Thanks in advance. 337B9F83-CCB4-41C1-8146-E4CB9F66975E.jpeg
     
  2. topspy

    topspy Registered User
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    Nov 17, 2013
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    Most of these are 1/10 Hp. I'm not sure how many amps, but it will be quite small. I have rebuilt several of these (various types.) First loosen the pulley setscrew and remove the pulley. Remove the brush cover screws on the side, and remove the brushes and springs. Be careful as the brush holders are bakelite and quite brittle. If they break you can superglue them back together. Remove the screws that hold the two motor halves together and gently pull the motor apart. Remove the armature. Some motors have bearings, others do not. If it has bearings test them to see that they spin with no 'crunchiness.' Replace them if needed,most are common sizes and are labeled on the side, and you can order them from many suppliers. Blow out any debris and lightly sand the commutator (where the brushes rub) to remove varnish. If the power cord is in poor condition you can replace it, but this is usually the most difficult part. Reassemble and test. If there are no bearings make sure to apply oil to the bushings (Non bearing motors usually have oil cups or oilers on them.)
     
  3. Yastrimsk

    Yastrimsk Registered User

    Jan 1, 2014
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    Thanks for all the info.
     
  4. Dr. Jon

    Dr. Jon Moderator
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    Dec 14, 2001
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    I use a Variac with several ac motors and it works well. Variac is a trademark of General Radio and their stuff was made well. Non brand Variacs look likes may not be as good and condition matters.
     
  5. measuretwice

    measuretwice Registered User

    Jul 28, 2019
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    1 HP = 750 watts., 1/10th = 75 watts. Putting aside efficiency etc, A=W/V = 120/75 = .625. Hardly anything.

    A Variac is a variable transformer and kind of overkill for this imo....given it's a universal motor you could get a foot speed control for less money. Speaking for myself, I think a foot control is a requirement for a watchmakers lathe (if that's the application)....I'd find it awkward without one
     

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