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Cooper/R&T DC electric shearing plant


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  #1  
Old 05-11-2012, 10:19:48 PM
John Ross John Ross is offline
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Default Cooper/R&T DC electric shearing plant

Hi Guys this is my first thread!!! I have recently picked up a Cooper 240 v DC electric shearing plant. It consists of a Ronaldson & Tippet CH 31/2 Hp diesel <44576>,a Cooper DC generator badged "Cooper DC electric portable shearing plant <Model A> 1.25 KW @2400 RPM No 3664.There are three 1/3 HP 220 V Dc motors The shearing gear(down tubes) etc are missing and i don't know what the missing bits look like,or how they are driven (Belt,direct drive, or what!!!!) Any info would be much appreciated. John Ross Canberra ACT Aust
Bugger I can't put my photos on!!!
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  #2  
Old 05-12-2012, 06:38:47 AM
jelbart
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Default Re: Cooper/R&T DC electric shearing plant

Here some pics from JR
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Old 05-12-2012, 07:06:15 AM
jelbart
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Default Re: Cooper/R&T DC electric shearing plant

some more pics from john
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Old 05-12-2012, 07:13:36 AM
jelbart
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Default Re: Cooper/R&T DC electric shearing plant

more pics from JR
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Old 05-26-2012, 08:44:45 PM
John Ross John Ross is offline
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Question Re: Cooper/R&T DC electric shearing plant

Hi Stackers Sorry nobody knows of the Cooper DC electric shearing plant model A. I have stripped the R/T CM the big problem is wear in the piston from the gudgeon wearing the piston instead of oscillating on the bush in the small end of the conrod. Has anyone any suggestions how to repair the piston? JR
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Old 05-27-2012, 03:17:12 AM
Ray Freeman Ray Freeman is offline
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Default Re: Cooper/R&T DC electric shearing plant

Ring around and see if anyone does Arc spraying.It would be simple to spray the gudgeon bore with something like Aluminium Bronze and machine it back to original. Otherwise someone may have a S/H piston.
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Old 05-28-2012, 12:30:02 AM
John Ross John Ross is offline
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Default Re: Cooper/R&T DC electric shearing plant

Cooper/R&T DC electric shearing plant
Thanks Ray, another piston sounds good but i will keep the idea of spray buildup in mind.JR
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Old 05-28-2012, 05:23:00 AM
Ray Freeman Ray Freeman is offline
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Default Re: Cooper/R&T DC electric shearing plant

Just out of interest,although I don't have a Cooper 240v electric shearing plant I do have a 110 volt DC set up. One of the shearing heads is a Wolseley and I think the other is a Cooper. I have the 110V DC generater and it originally had I believe a Moffat Virtue petrol engine on it.At present it has a R/T N on it that looks like it come of a Hannaford Grain Screen. It has the Hannaford dust guards etc on it.
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Old 05-28-2012, 06:01:35 AM
John Ross John Ross is offline
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Default Re: Cooper/R&T DC electric shearing plant

Re Cooper /R&T DC electric portable shearing plant
Hi Ray does your DC plant have separate motors or do you have electric shearing machines like the 240 V used today???
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Old 05-29-2012, 08:31:12 AM
Ray Freeman Ray Freeman is offline
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Default Re: Cooper/R&T DC electric shearing plant

John,I'll have a l0ok in the next few days and get back to you.
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Old 06-04-2012, 08:26:44 AM
Ray Freeman Ray Freeman is offline
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Default Re: Cooper/R&T DC electric shearing plant

John,mine have a vertical shaft motor with a direct coupled drop tube coming out the bottom
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Old 06-05-2012, 08:36:01 PM
John Ross John Ross is offline
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Default Re: Cooper/R&T DC electric shearing plant

Re Cooper R/T DC electric shearing plant
Thanks Ray that is what I expected, what I have has me really baffled. I still haven't located a piston!! BUGGER JR
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Old 06-06-2012, 04:29:26 AM
Darryl Darryl is offline
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Default Re: Cooper/R&T DC electric shearing plant

the way i've fixed that sort of piston/gudgion problem is put piston in 4 jaw chuck and bore hole out true and then hone little end bush the same size and make a new gudgion to suit. the hardest part is setting up piston, i set up by the cir clip grooves with a pointed wire to set it true. i didnt put new cir clip grooves back in it, i made brass caps that sat in gudion hole in piston on either side of pin.
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Old 06-06-2012, 04:34:03 AM
Ian Long Ian Long is offline
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Default Re: Cooper/R&T DC electric shearing plant

HI, Try Don Reid in Brisbane for replacement piston. He owns vintage engine spares and his phone/fax number is
(07)3200 5282. Regards Ian
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Old 06-06-2012, 07:12:21 AM
John Ross John Ross is offline
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Default Re: Cooper/R&T DC electric shearing plant

Thanks Ray I shall give him a call when I get around to measure the bore and gudgeon and check that the gudgeons I have are serviceable. I will post progress for your ifo.JR
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