Making A Narrow-Gauge Locomotive - PART TWO - Transmission (vee belt reverse drive)

Published 2022-05-19
More complicated than I'd expected - how to keep vee belts on their pulleys with enough friction to drive the wheels, but also slack enough to slide when needed. And also go from forwards to backwards gear...

This is the video that's featured in this one..    • First Start Of Old Bamford Stationary...  

As always, thanks to Will too for his general helpfulness and good humour.

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All Comments (21)
  • @PKMartin
    This is my favourite series on Youtube at the moment - so much "farmer ingenuity" combining to build something that really feels alive. Can't wait to see her puffing a load of chips up into the drying tunnel!
  • @mezzmainia
    With the large fly wheel and the assortment of levers to control it, this engine is looking more and more like one of Trevithick's steam engines.
  • @cprgreaves
    SEAT? You are selling your soul for an office job? (grin) Congratulations Tim, and Sandra-who-looks-after-Tim. This is, indeed, coming together. (later) 11:43 ... and then you had your FIRST derailment - and no bystanders were injured! Well done!
  • Your front is absolutely correct. All the steam locomotives have the working parts up front and the engineer in the rear, so you are doing it right. (I like to forget all about those backwards diesel engines we have nowadays)
  • @mikecarlson6416
    the design is pretty smart serving both reverse and clutch functions
  • @Taras195
    Remember my words: in a year this guy would have his own built steam locomotive!
  • @jenhofmann
    I uttered "WOW" aloud at least 5 times during this video, Tim. The video jump cuts between stages make it look easy, but I can't imagine how many hours of sketches, measurements, math, design, and experimenting happens between them. Bravo, sir. You 100% earned that slo-mo moment of celebration at the end!
  • @Darwinpasta
    I worked on a rototiller the other day that had a very simple reversing mechanism. The engine shaft had a V-belt pulley and a tire, and the gearbox had a V-belt pulley and a smooth drum. The forward/reverse lever moved the engine up and down. Lifting the engine tensioned the belt and drove the gearbox one way. Lowering the engine slackened the belt and held the tire against the drum, driving the gearbox the other way. I imagine you could come up with a similar arrangement on a jackshaft and save yourself some complexity and belts rubbing against themselves.
  • @gamerjosh5686
    Why does this give me the vibe of an engine from the Rainhill trials
  • @chillyspoon
    Absolutely loving this build - it's fascinating but Will is "blink" welding at about 1:30, it's a recipe for blindness, don't risk it man it's just not worth it!!
  • @Andrew_Fernie
    This has to be about the jankiest, most cobbled together contraption I have ever seen and I think it's fabulous !
  • I bet you could rig up a single lever so that one direction pulls one pulley tight and the other pulls the other, backwards and forwards on a single lever - also meaning you can't engage both at the same time!
  • @error__name7402
    Perhaps try and make it have another cart that is attached that is just a boiler, so you get pressure everywhere you go.
  • @choppercam01
    Oh how I wish I had a large enough plot of land, like a whole farm 😂, just so I could have a field railway. Oh well I can still dream I spose. I must say tho I love these videos
  • @HamidA-to8vy
    The brilliancy is all these things work at the end ! If Tim gets good milling and lathe machines , he might launch a ship to the space soon
  • @rusty911s2
    4.38: good use of a medium sized finger-pulley there, although can be limited in high speed applications. Marvellous stuff!
  • @wwlb4970
    I'm absolutely in no mood to drink now, but when time comes, I'm going to open a best 50-year whisky bottle I can afford and watch entire railroad series.
  • @joshuadelisle
    Cheap and simple. Your a man after my own heart. Cheers J
  • This is the single most brilliant thing on YouTube. Thank you for keeping us all up to date on it! What kind of thing are you planning in the way of brakes for your beautiful contraption? And does she need a name yet?