Author Topic: Bargin from the scrapman  (Read 3688 times)

Offline chipenter

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Bargin from the scrapman
« on: April 04, 2015, 10:10:04 AM »
I got a linisher for 10 from the scrapman 3 phase 3\4hp , pulled it apart and rewired the motor to single phase capasitor run had to cut the coils to convert from star to delta ,  put it back together to test takes a couple of seconds to get up speed , it has one noisy bearing and needs a belt and a switch but thats all and a good clean up .
Jeff

Offline hermetic

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Re: Bargin from the scrapman
« Reply #1 on: April 04, 2015, 10:34:22 AM »
 :bugeye:
You Suck! What a bargain, I have been after a decent linisher for some time, because the cheap or good rule applies to them! Decent ones seem to be around 200 (used) that is a good british machine. Enjoy it!
Phil

Offline chipenter

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Re: Bargin from the scrapman
« Reply #2 on: April 04, 2015, 10:47:16 AM »
I wont be using for a while pulled apart again to clean it , if the weight is any mark of quality this weighs in at least 50 kilos .
Jeff

Offline vtsteam

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Re: Bargin from the scrapman
« Reply #3 on: April 04, 2015, 11:33:06 AM »
That's a nice heavy looking one jeff. Good work!  :thumbup:  :beer:
I love it when a Plan B comes together!
Steve
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Offline Arbalist

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Re: Bargin from the scrapman
« Reply #4 on: April 04, 2015, 11:36:55 AM »
Looks very well made, far better than modern ones so well worth restoring.

Offline RobWilson

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Re: Bargin from the scrapman
« Reply #5 on: April 04, 2015, 11:44:04 AM »
Looks very well made, far better than modern ones so well worth restoring.

I second that  :thumbup:  , a cracking fined for 10 quid  Jeff   :dremel:


Rob

Offline chipenter

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Re: Bargin from the scrapman
« Reply #6 on: April 04, 2015, 11:55:00 AM »
This was my first time with 3 phase motors very pleased that it worked .
Jeff

Offline Arbalist

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Re: Bargin from the scrapman
« Reply #7 on: April 04, 2015, 01:08:26 PM »
I ran a three phase milling machine on single phase for several years without any problems, just swapped a few wires and added a capacitor. Cost me 12.00 though!  :D

Offline tom osselton

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Re: Bargin from the scrapman
« Reply #8 on: April 04, 2015, 05:53:43 PM »
Been looking at one in the used tool store here they want $180.00 bucks for it I've been humming and hawing  whether or not to buy. But I do have a 3phase motor fitted to a worm drive I'd like to use for a muller. I haven't played with converters yet and don't know a star from a delta,  how do you figure out what capacitor to use?

Offline chipenter

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Re: Bargin from the scrapman
« Reply #9 on: April 05, 2015, 02:11:12 AM »
Hi Tom I used Electric motors Worshop Practice book , and had a look on utube loads of info out there just takes time , how old your motor is the newer the easer , mine was over 40 years old with only 3 terminals newer ones have 6 and links .
Jeff

Offline Arbalist

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Re: Bargin from the scrapman
« Reply #10 on: April 05, 2015, 05:11:39 AM »
The formulae I read was 70uf per Kw (52uf per hp) and rated at least 1.2 x line voltage. It also needs to be continous duty type.
My machine had a 3/4hp motor so I used a 300v 40uf capacitor after swapping the leads over from star to delta. The capacitor was quite large, maybe 150-170mm long and 32-35mm dia in a metal can.
You only get up to 80% of the motors rated output but I never noticed any lack of power. Also not suitable for motors that need to start under load apparently.