Hiya, I'm sure I've seen the answer for this somewhere, but so far haven't found it . My BN1978 Geep has a runaway compressor ! Lol . I've looked in the cab.sms file and compared it with a cab.sms file for one of the F units , no differences ..
Thanks for the heads-up on the Carrizo Gorge route . Love that desert stuff . I've been out there collecting rusty, beat-up looking SP stuff to run on it! Would like to run those green things on it too , but the compressor is driving me nuts!
I'm gonna go over to trainsim now and do some ferreting about, looking forthis question, check back later.
jv

JV,
Look in your 3DTrains_GP9_BN directory and open the GP9_BN_1978.eng file with WORDPAD. You probably already knew that, but just making sure here. Scroll down approximately 4/5ths of the way and look for the following entry:

EngineBrakesControllerDirectControlExponent( 1 )

If you can't find it add it just below this line:

BrakesEngineControllers( "Independent, Train, Dynamic" )

If that doesn't cure your problem check to see that you have the following entries just as I have them:

AirBrakesAirCompressorPowerRating( 2.9 )
AirBrakesMainMinResAirPressure( 14.7 )
AirBrakesMainMaxAirPressure( 140 )
AirBrakesMainResVolume( 8 )
AirBrakesAirCompressorWattage( 14500 )
AirBrakesCompressorRestartPressure( 134 )
AirBrakesAirUsedPerPoundsOfBrakePipePressure( 1.4 )
AirBrakesIsCompressorElectricOrMechanical( 1 )

EngineBrakesControllerMinPressureReduction( 6 )
TrainBrakesControllerMinPressureReduction( 6 )
EngineBrakesControllerHasProportionalBrake( 1 )
EngineBrakesProportionalBrakeLag( 0.9 )
EngineBrakesControllerMaxApplicationRate( 7 )
TrainBrakesControllerMaxApplicationRate( 5.5 )
EngineBrakesControllerMaxReleaseRate( 14 )
TrainBrakesControllerMaxReleaseRate( 3.4 )
EngineBrakesControllerEmergencyApplicationRate( 8 )
TrainBrakesControllerEmergencyApplicationRate( 7 )
EngineBrakesControllerMinSystemPressure( 15 )
TrainBrakesControllerMinSystemPressure( 15 )
EngineBrakesControllerMaxSystemPressure( 80 )
TrainBrakesControllerMaxSystemPressure( 80 )
EngineBrakesControllerEmergencyBrakeTimePenalty( 60 )
TrainBrakesControllerEmergencyBrakeTimePenalty( 60 )
EngineBrakesControllerFullServicePressureDrop( 26 )
TrainBrakesControllerFullServicePressureDrop( 26 )

The constant compressor is usually due to not having the EngineBrakesControllerDirectControlExponent( 1 ) line added in. But sometimes the AirBrakesCompressorRestartPressure( 134 ) figure is too high causing the compressor to keep on going...and going..and going.

If neither of the above methods cure your problem shoot me an e-mail (dzollner@tds.net) and I'll get you situated.

Also, before doing this, are you sure you're running version 2.0b of the Geep pack you purchased? It was updated on 2/12/03. If you're not running the most current version head to the F-Unit forum and download the pack again from the Locomotive and Core Downloads sticky post you'll find at the top of the page. If you are still getting the constant compressor sound after installing the current version then try the methods above.

Thanks for the help mate! I'm using the 2.1e version of the BNgeeps... there's an update thread that has a newer version of the BNgeeps files than the 2.0b ones in the sticky, it's ok tho cos the core files are unchanged ... thanks for the info on the .eng files!!
Love all these Geeps! I wonder if I can use the sf manager to shrink DadBill's 3DPerfection SP Geeps so they are the same size as Marcs' ones... at the moment these monuments to weathering are just a little bit bigger ...
Bring on the surfliner!! jv

JV, I had totally forgotten about that update thread and apologize for pointing you in the wrong direction. But, did you work out your problem? You said thanks, but didn't say if you had cured it or not.

Yep Totally cured !! (I pressed 'J' as well ) Thanks for the follow up ... I have a much clearer idea of what's going on now you explained it.
jv