Quote:
Originally Posted by JanGeo
WOOOOOWW are we talking motorcycle or car manual transmissions? Car transmissions are still moving gears back and forth on splined shafts otherwise you wouldn't get gear grinding noises or have syncros in them. Motorcycle transmissions use dogs like you say as well as old three speed and more recently 5 and 7 speed hubs in bicycles but cars still have syncros and require special lubrication properties so that they grab enough to syncronize the speed of the clutch disk input side shaft to the output shaft speeds. Race cars are totally different animals and I don't profess to know how they work.
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Hmmm.... I can shift gears (up or down) in any manual shift car without using the clutch(if the car is moving)! All that is required is to "unload" the gears with the throttle...move the cluster on the splines to the neutral position, match the revs ...roadspeed, drive gear speed... and pull(quickly) the cluster into the next position, or shift.
Sure, cars still have synchros...they just aren't promoted, anymore. Too many buyers want the automatics! And...you're not getting gear-grinding noises if you "miss" a shift...those are the dogs you hear. The synchro cones merely match the speed(s) with their slippage friction prior to dog engagement.
Oh, "race cars are totally different animals"? Insofar as cluster gears are concerned? Don't you believe it! Ask Hewland....