could anyone please put it in something simple but technical enough......
any preferred website for this?
Thank guys.....

 

Well, the backend of an automatic transmission is generally the same as a manual. The difference is the torque converter (TC), which an automatic has instead of a clutch. The TC is a fluid-filled unit that transfers power from the engine to the transmission. One side of the TC is connected to the engine and spins with it. There are vanes on it. As it spins, the fluid in the TC begins to spin around, also. The spinning fluid pushes against the vanes on the transmission side, and it begins to spin, too. Imagine two pinwheels face-to-face in a cylinder of fluid. When one is spun really fast, the fluid swirls along with it and spins the second pinwheel also. A shaft connected to the second pinwheel connects to the gears and makes them spin. With a clutch, the two sides physically clamp together, providing a solid link (as long as the clutch isn't worn too much). That's why manuals transfer more power to the wheels- there's no loss of power in the clutch link, whereas, on an automatic, some hp is wasted in the form of heat energy (friction) from swirling the fluid. When an automatic car is stopped, the engine side of the TC is still allowed to spin with the idling engine, and the little bit of swirling fluid doesn't overpower the brakes, so the car can idle without stalling. You'll also notice that automatics creep. That's because the idle speed is enough to spin the transmission a little bit when the brakes aren't on.

 

in a NITRO RC CAR?
they also have something like that...but the difference is the have clutch shoes that attach to the gear, which engages when it hits certain RPM (inertial)
they also have 2 speed (gear) clutch....for RC...automatically shifts to the 2nd gear, based on the RPM you set it at....
I guess the RC Nitro 'transmission' is a simplification of the real auto transmission?

 

I don't know much about RC cars, but that sounds like a cool feature.

 

yeah...that is the only way I can drive
a skyline GTR-Vspec and a Viper-GTS-R
Until I can afford the real deal.....if I ever...
neat hobby...expensive
a gallon of fuel cost 30 bucks....
so..oh well...

 

Take a look at http://www.howstuffworks.com, they've got extensive info on cars including automatic transmissions.

 

^_^