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  1. toprem

    Clutchless shifting a dog gearbox.

    This comes from some experience with marine sterndrives where we essentially use dog clutch full power shifting. Now the RPM difference is he most damaging to the system. Someone long time back did someting smart. The shifting is done in the lower unit and hence the engine rpm is reduced by the...
  2. toprem

    Dog clutch modeling

    I have an application in the marine world in sterndrives, where a dog clutch is used to engage the drive into gear from neutral. There is no disconnect clutch on the engine so its a power shift. Does anyone have experience with modeling the shift event. I am looking for dynamic equations for a...
  3. toprem

    1045 Annealed VS Hardened and tempered

    In one of our applications a 0.188 thick round washer skipped the heat treat process. It is a 1045 annealed, then stamped, then water quenched to acheive 40Rc and tempered. A few samples however were used just in the annealed condition. This washer is used to preload an input pinion bearing in a...

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