Re: Pulleys and Belts instead of gears
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Richard,
You can find pulleys in old tape drives, and even some computer disk drives use a belt and pulleys for the drawer mechanism. I did a repower on a Riv U25C years ago with a small square belt and pulleys that worked really well. http://i159.photobucket.com/albums/t131/NickelPlate759/Rivarossi%20U25C%20Belt%20Drive/DSCF0368-800x600.jpg
? http://i159.photobucket.com/albums/t131/NickelPlate759/Rivarossi%20U25C%20Belt%20Drive/DSCF0390-800x600.jpg
? The small pulley on the motor shaft and large one on the gearbox add some extra reduction to the gearbox, but with a steamer all of your reduction would be limited to the pulleys alone. That's probably going to make it too fast, even if you make the pulley on the axle as close to the driver diameter as possible. I would cut a groove for the belt into the existing axle gear if I was to try it, though. Nelson |
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