Elvas Tower: Blended brake - Elvas Tower

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Blended brake Brake control that has dynamic only and blended - is this possible?

#1 User is offline   darwins 

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Posted 28 November 2019 - 03:14 AM

Working my way through British electric multiple units - more about that later...
I have come across and interesting brake arrangement. This is a train / blended brake that has a notch that gives application of the dynamic brake.
The braking system in use is

Comment ( *** Braking system *** )
BrakesTrainBrakeType ( "EP" )
BrakesEngineControllers ( "Train, Blended" )

The controller for this has the following notches:

1 Release or Running
2 Holding
3 Regeneration 1
4 Regeneration 2 and EP
5 Lap Air
6 Service Air
7 Emergency
Now I can get close to that by using the same controller I would use for the Westinghouse Type A electro-pneumatic brake that is

Brake_Train ( 0 1 0.05 0.1
NumNotches ( 6
Notch ( 0 0 TrainBrakesControllerReleaseStart )
Notch ( 0.1 0 TrainBrakesControllerEPHoldStart )
Notch ( 0.2 0 TrainBrakesControllerEPFullServiceStart )
Notch ( 0.7 0 TrainBrakesControllerHoldStart )
Notch ( 0.8 0 TrainBrakesControllerFullServiceStart )
Notch ( 0.9 0 TrainBrakesControllerEmergencyStart )))

This works well, but compared to the real thing it has one missing step. There is no brake token I can put in there AFAIK to add some application of dynamic brake before going on to blended EP and dynamic braking.What is needed would be something like

Brake_Train ( 0 1 0.05 0.1NumNotches ( 7
Notch ( 0 0 TrainBrakesControllerReleaseStart )
Notch ( 0.1 0 TrainBrakesControllerEPHoldStart )
Notch ( 0.2 0 TrainBrakesControllerDynamicFirstServiceStart )
Notch ( 0.3 0 TrainBrakesControllerEPFullServiceStart )
Notch ( 0.7 0 TrainBrakesControllerHoldStart )
Notch ( 0.8 0 TrainBrakesControllerFullServiceStart )
Notch ( 0.9 0 TrainBrakesControllerEmergencyStart )))

I don't think anything like that exists as yet - has anybody tried to make a similar brake?

#2 User is offline   Csantucci 

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Posted 28 November 2019 - 12:00 PM

A reply would be also interesting for me. In my country the newer electric locos have a similar arrangement.

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