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OT What type of welder transformer?


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  #21  
Old 12-27-2015, 04:31:01 PM
Railroads Railroads is offline
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Default Re: OT What type of welder transformer?

Dkamp, I really appreciate your input and suggestions. I have not really given up but just gone quiet with my electric railroad ideas for now.

Robert
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  #22  
Old 12-28-2018, 08:16:44 PM
Railroads Railroads is offline
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Default Re: OT What type of welder transformer?

I'd just thought I give this post a bump with some new information I have run across.

This has effectively been done fifty years ago with the Triang Minic railway system 10.25" gauge , some of which were used commercially. It was , in effect, an up-scaled version of 00 gauge picking current up from the track.

"Track power is supplied by a 35v 20amp trackside transformer and with attentions turning to the commercial market, the twin motored locomotive, with internal (T.M.N.R.3) and external (T.M.N.R.4) control was developed giving 1˝ hp supplied by a 35v 40amp transformer. "

https://www.brightontoymuseum.co.uk/...Railway_(TRMN)

Seem the British have a couple working minimum gauge electric trams. Track gauge is between 15 and 18 inch gauge and the trams run on 50 volts DC.

http://www.britishtramsonline.co.uk/news/?p=4158

https://www.philt.org.uk/Tram/United...lany/i-6W9mq24

This now defunct minimum gauge railway used 110v third rail power supply.
https://www.tapatalk.com/groups/mrw_...way-t4288.html

Minimum gauge electric mine locomotive. https://www.flickr.com/photos/fdw_brugge/6117619448

Chinese electric coal mine minimum gauge railway. This one I think is 600v DC. https://www.youtube.com/watch?v=WEpeQiKOjfs

https://www.youtube.com/watch?v=ounXGC8nW_0

Robert

Last edited by Railroads; 12-28-2018 at 08:39:19 PM.
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  #23  
Old 04-21-2019, 10:58:50 PM
dkamp dkamp is offline
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Default Re: OT What type of welder transformer?

35v @ 40A is 1400w, which yields 1.8hp, so the 1.5hp claim (at least, when you're close to the transformer) is certainly attainable. At the far end of a loop, it'll be down a fair bit on account of transmission resistance (assuming you're using steel with bolted joints). If you can do what you want at 1hp, you'll be fine. at 35V there won't be any serious safety issues.
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