Popular Post doullama Posted February 23 Popular Post Share Posted February 23 So as was bound to happen eventually in my terminal spiral of railway barrydom, I have scrounged myself a tiny 2 foot gauge locomotive. It is the same wheelbase (and length with the operator stand folded up) as a minecart, so it can be put in a liftshaft in my future illegal underground goldmine. Its a "battery electric vehicle - winstone & rogers model 5" and could have been built anywhere from 1937-1982. It has been stripped of all its electrical gear, and has nothing but the final drive left. The final drive is a worm gear reduction box of unknown ratio. I intend to get it running and stopping, using either battery electric (forklift?) gear or petrol hydraulic. I would rather electric just for the silent operation aside from the flanges screaming and joints thudding at a thundering 3.1mph.. 12 3 Quote Link to comment Share on other sites More sharing options...
HighLUX Posted February 23 Share Posted February 23 Can you count input turns to output turns to work out ratio? 1 Quote Link to comment Share on other sites More sharing options...
doullama Posted February 23 Author Share Posted February 23 18 minutes ago, HighLUX said: Can you count input turns to output turns to work out ratio? Yeah absolutely, though I thought i'd try to find out for idle planning purposes without having to put it on blocks haha. Some barry on one of the narrow gauge pages reckons he has a final drive in pieces and will count the teeth for me, its just a single thread worm drive. Have been looking into 48v forklift motors, pretty cheap secondhand and they look similarly sized to the original motor. 2 Quote Link to comment Share on other sites More sharing options...
Roman Posted February 23 Share Posted February 23 100% keen to come do some back breaking labor on some old timey machines in an illegal gold mine 7 Quote Link to comment Share on other sites More sharing options...
HighLUX Posted February 23 Share Posted February 23 This guy exudes Erics dodgy gold mine 2 Quote Link to comment Share on other sites More sharing options...
doullama Posted February 23 Author Share Posted February 23 What a brilliant watch, mine will of course be much wetter, crudely shored & poorly lit 2 Quote Link to comment Share on other sites More sharing options...
doullama Posted February 23 Author Share Posted February 23 You have to love the internet, how else could you find the reduction ratio of the final drive of an obscure british mining locomotive in 2 hours from the comfort of the couch. Ratio is 31:1. Now I just have to measure wheel diameter and I should be able to figure out necessary RPM for 3.1mph/5kph, which is plenty for what it is. In its original form this would pull 16.5 ton on the flat, down to 3.7 ton on a 1:50 grade. I'm hoping to achieve at least 300kg towed at 1:20 or greater, the line at waikino is very steep.. 5 Quote Link to comment Share on other sites More sharing options...
Popular Post doullama Posted February 23 Author Popular Post Share Posted February 23 Here is a picture of the complete, identical engine at waikino for reference. 14 Quote Link to comment Share on other sites More sharing options...
doullama Posted February 23 Author Share Posted February 23 Note to self - the original motor did 2200 rpm flat tack. Thanks british narrow gauge foamers 8 Quote Link to comment Share on other sites More sharing options...
crash Posted February 24 Share Posted February 24 I there's an old mine cart on a farm I go to occasionally, probably same size. Next time I'm there I'll take some pics. Near Methven, Canterbury. 2 Quote Link to comment Share on other sites More sharing options...
doullama Posted February 28 Author Share Posted February 28 On 24/02/2024 at 21:47, crash said: I there's an old mine cart on a farm I go to occasionally, probably same size. Next time I'm there I'll take some pics. Near Methven, Canterbury. Probably, 2 foot was a common gauge for small rolling stock. In the day you could buy pre-made track sets and switches to put together like an oversized model train set! There's a few old industrial wagons out at waikino just sitting on "display" that are begging to be restored and run on the tiny mainline 3 Quote Link to comment Share on other sites More sharing options...
crash Posted February 28 Share Posted February 28 Thought I had a pic! 7 Quote Link to comment Share on other sites More sharing options...
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