Shift on the fly: cone clutch? dog engagement?
Shift on the fly: cone clutch? dog engagement?
(OP)
I'm looking at implementing a 2 speed gearbox after a belt driven CVT transmitting 15 HP max. The RPM from the CVT will max out at 5000 rpm and the low gear reduction is about 1.5 times the high gear reduction.
I would like to shift between the two gears on the fly, and I would like to avoid a disengaging clutch for simplicity reasons. I am currently looking for the best way to handle this. Would a dog engagement suit this situation well? Perhaps a cone clutch? Perhaps something I'm not thinking of just now?
Thanks for your thoughts!
I would like to shift between the two gears on the fly, and I would like to avoid a disengaging clutch for simplicity reasons. I am currently looking for the best way to handle this. Would a dog engagement suit this situation well? Perhaps a cone clutch? Perhaps something I'm not thinking of just now?
Thanks for your thoughts!





RE: Shift on the fly: cone clutch? dog engagement?
Otherwise you need to remove the torque to make the shift.
Mike Halloran
Pembroke Pines, FL, USA
RE: Shift on the fly: cone clutch? dog engagement?
If on-the-fly means you would settle for letting off the throttle to shift one direction (like old car overdrives), a pawl could be substituted for the friction lock.
RE: Shift on the fly: cone clutch? dog engagement?
RE: Shift on the fly: cone clutch? dog engagement?
See "T" model ford for example.
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RE: Shift on the fly: cone clutch? dog engagement?
RE: Shift on the fly: cone clutch? dog engagement?
If weight is not the problem, GearVendor of San Diego makes several two speed conversions adaptable to a multitude of uses. At only 15hp, I think I would dig through the industrial gear vendors catalogs, or do a lot of Google.
Rod
RE: Shift on the fly: cone clutch? dog engagement?
Mike Halloran
Pembroke Pines, FL, USA
RE: Shift on the fly: cone clutch? dog engagement?
If your looking for a tranny to "hack up" for any reason, try the local taxi company. Out here the Yellow Cab service yard in the LA area (I think it's Gardena) has about a zillion junked transmissions out back.
Rod
RE: Shift on the fly: cone clutch? dog engagement?
1. A variable sheave set up with linkage that only allows two positions. (here is one vendor http://
2. Some of the late belt drive Bobcat's had a two speed option. I believe that to engage high you energized a clutch, and low then spun on an over-running/sprag clutch. Of course you could use chain or a toothed belt, but the belt should allow for some slip during "gear changes".
ISZ