How about this for a gearbox then ?

[Deano400]

Transmission from a train at work. In the background is an engine, 19 litre Cummins. 3 engines and transmissions on each train.

[96terrano]

i want to take it apart

[trophymick]

Does it have a Voith retarder fitted?

Reason I ask Is I did a stint for Eaton Gearboxes as HGV gearbox test driver.
I was testing a gearbox with a Voith retarder fitted, it apparently worked off water. I could go down some very steep hills (at walking pace if I wanted) without touching my brakes. I was driving a military spec MAN, 40 foot trailer and weighing in at 44 tonnes, Eaton had agreed routes (DOT), with bridges that could carry 44 tonnes, the max limit at the time was 38 tonnes.





Mick

[jims-terrano]

Where does the coal and the water go

[Deano400]

Originally Posted by trophymick

Does it have a Voith retarder fitted?

Reason I ask Is I did a stint for Eaton Gearboxes as HGV gearbox test driver.
I was testing a gearbox with a Voith retarder fitted, it apparently worked off water. I could go down some very steep hills (at walking pace if I wanted) without touching my brakes. I was driving a military spec MAN, 40 foot trailer and weighing in at 44 tonnes, Eaton had agreed routes (DOT), with bridges that could carry 44 tonnes, the max limit at the time was 38 tonnes.





Mick

It's Voith, the same company. They do use hydrodynamic braking via the transmission on the trains, but it uses oil not water, though the trans is water cooled. It's an auto box that is electronically controlled and the whole traction braking system is interlinked with not only a multi function vehicle bus integrating canbus but also a hardwired failsafe basic backup. The friction brakes are pneumatic and blended in automatically when necessary. The transmission is fully reversible too for obvious reasons.

Ryan, you can't take it apart ;-), they won't even let us do that. Our repairs are confined to sensor, ECU and minor external stuff. If it's anything worse than that, they get sent to Voith for rebuild. They very very rarely go wrong and they would have done a million miles+ each before they were sent for overhaul. I haven't changed one for a while, I've moved on to mostly fault finding and electrical repairs now.

No coal and water on these but we do occasionally get 50/60's vintage Locos and carriages in for tyre turning ( put them on a big lathe and re profile the wheels )