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| Engine swap - Snowblower |
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| Manxmodder:
--- Quote from: Brass_Machine on October 26, 2016, 10:08:31 AM --- --- Quote from: awemawson on October 26, 2016, 09:40:15 AM ---Eric, a quick C o Cad sketch The cam shaft goes half the speed of the crank shaft so you need a pair of gears with a 2:1 tooth ratio. Drill the rear plate to pick up the mounting hole around the existing shaft. Gasket paper between the plates and drill an oil filling hole somewhere --- End quote --- Would the timing gears in the timing case of the old engine fit the bill? They are up to the job on the old engine they should be fine in Andrew's suggested gearbox.....OZ. That looks like it could be a good solution. I would just have to find gears that would work as I am not setup to cut my own gears. --- End quote --- |
| RussellT:
Thanks for the extra picture. That helps. Could you add an extra cross shaft carrying the gear that engages with the large gear and fit two gears at the other end of the shafts to reverse the direction? Or would it be possible to replace the large gears with a chain drive - although you'd probably need an intermediate shaft and sprockets somewhere to get the ratio right. Or raise the engine up and put a couple of shafts below it and deal with reversal there. Incidentally there ought to be a couple of suitable gears in the old engine - but that would mean you couldn't go back. Russell |
| awemawson:
Shame to spoil a perfectly good engine though - stock gears are cheap enough |
| Brass_Machine:
--- Quote from: awemawson on October 26, 2016, 01:58:21 PM ---Shame to spoil a perfectly good engine though - stock gears are cheap enough --- End quote --- Yup. Gonna keep the old engine for a bit. I will use your idea of a flat gear box. Need to design it and find gears that work... |
| seadog:
What about turning the drive hub around on the shaft? It would mean relocating the actuating fork though. Is that feasible do you think? |
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