rocketonarail
Hero member
- Location
- Gloucestershire,England
Bad form to post something twice ....... but it was a while ago , and I`ve just remembered it ........
..... " It`s wealthy wanker or nothing ... " ....... .............
The electric car that runs on petrol ….. yet gets a similar mileage to my daughters all petrol car. I got to take a moment to think about this conceptI’ve put this in the joke section but apparently it’s not- it’s a petrol powered electric car. You couldn’t make it up..
The electric car that runs on petrol ….. yet gets a similar mileage to my daughters all petrol car. I got to take a moment to think about this concept
The raison why these locs are diesel electric is that an electric motor offers max torc at 0 rpm, hence you do not need to play with a mechanical clutch or torque converter to translate max torque rpm of the diesel engine to still standing wheels. You power an electric generator with your diesel engine at most suitable rpm and have max torque at the wheels from your electric motors from standstill on... exactly what you need when you want to start to roll tens of tons. Btw steam engines offer max torque at 0 as well..
Ferries and the like used to use the Ward Leonard system where controlling the the field winding voltage could give quick and accurate speed control and forward and reverse instantly. Very useful when manovering into a berth.The raison why these locs are diesel electric is that an electric motor offers max torc at 0 rpm, hence you do not need to play with a mechanical clutch or torque converter to translate max torque rpm of the diesel engine to still standing wheels. You power an electric generator with your diesel engine at most suitable rpm and have max torque at the wheels from your electric motors from standstill on... exactly what you need when you want to start to roll tens of tons. Btw steam engines offer max torque at 0 as well..
Somewhere I have a photo of an EV charging station in rural Oz, just behind it is the stonking great diesel generator that powers it. Does make sense, on one level …Ferries and the like used to use the Ward Leonard system where controlling the the field winding voltage could give quick and accurate speed control and forward and reverse instantly. Very useful when manovering into a berth.