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| Engine swap - Snowblower |
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| Brass_Machine:
--- Quote from: wgw on October 26, 2016, 05:20:58 AM ---I don't know these machines , is there room to put a twist in the drive belt to the wheels ? --- End quote --- I have thought about that one. Wouldn't there be wear from the belt rubbing against itself? |
| Brass_Machine:
--- Quote from: awemawson on October 26, 2016, 02:43:02 AM ---Eric, Can you not make a flat gearbox that bolts on round the main shaft and has a 2:1 ratio presenting a shaft where your missing one is and running at the correct speed and direction? I imagine a sort of sandwich arrangement, two flat plates and a spacer a little fatter than the gears, suitable bearings for the new shaft, and filled with a little oil. --- End quote --- I think this one is possible. The new engine does have the 2 extra bolt holes at the top... I am having a hard time seeing in my mind what you are describing. I think I know but I am not sure... |
| awemawson:
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 |
| Brass_Machine:
Here is a view looking from the bottom up. I left of the gear that drives the wheels on the left. I believe the drive wheel is positioned between 1st and 2nd. I believe I have it wrong... the closer the drive wheel is to the center of the platter, it spins the wheels slower. The closer to the edge, the wheels spin faster. If I adjust the drive wheel so it contacts the other side. I will get 1st and 2nd plus 1 reverse speed.Unfortunately, it cannot go any further left due to things being in the way. Eric |
| Brass_Machine:
--- 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 --- 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. |
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