syncro-mesh (how it works - youtube)

[arcosine]

How a transmission works

http://www.youtube.com/watch?v=JOLtS4VUcvQ

[mechman600]

Originally Posted by arcosine

How a transmission works

Maybe back in the 50s. Sliding gear transmissions have not been used since. In modern transmissions, the gears stay stationary and collars slide on the output shaft:

http://www.youtube.com/watch?v=IKywZ730JFs

[arcosine]

1936, I was looking for an example od a non-sycromesh transmission, like the reverse gear in your picture. Are then splines that the reverse gear slide on integral with the outout shaft?

[Cobb]

So much for an intelligent conversation about the lubricant thats safe for yellow metals.

[user removed]

That's a crash box (first post).

regards
Mech

[arcosine]

http://www.youtube.com/watch?v=IDiPWUy7BZ8

[user removed]

I prefer spinning hydraullic rams.

regards
Mech

[redpoint5]

Meshing all gears all of the time seems inefficient. Perhaps they aren't loaded so the friction is greatly reduced?

These videos remind me of how a differential works.

http://www.youtube.com/watch?v=yYAw79386WI

[some_other_dave]

Originally Posted by redpoint5

Meshing all gears all of the time seems inefficient. Perhaps they aren't loaded so the friction is greatly reduced?

That's correct--there isn't a whole lot of friction because the gears are all spinning on roller bearings. Some power is lost just keeping everything moving, of course, but it's not as much as you might think from seeing that everything is always meshed.

-soD

[Cobb]

Yeah, its easier to move spinning gears and to get them to mesh with others vs having them at a standing still. Thats assuming you are using gears in the first place.