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Train brake question. (lever throws in HUD vs psi.)

Unread postPosted: Sat May 10, 2014 7:17 pm
by Ericmopar
This is about the lever in the F4 HUD, mostly.
I've gotten pretty good at adjusting the basic pressures to work better, but on some engines, the lever throw from minimum reduction to full service is to short.
I was wondering how to correct that little problem, since it makes for touchy brakes, even if the pressures have been adjusted to something reasonable.
I don't even know where the files that control that are.
Any help would be appreciated.

Re: Engine brake question. (lever throws in HUD vs psi.)

Unread postPosted: Sat May 10, 2014 7:38 pm
by mrennie
Ericmopar wrote:This is about the lever in the F4 HUD, mostly.
I've gotten pretty good at adjusting the basic pressures to work better, but on some engines, the lever throw from minimum reduction to full service is to short.
I was wondering how to correct that little problem, since it makes for touchy brakes, even if the pressures have been adjusted to something reasonable.
I don't even know where the files that control that are.
Any help would be appreciated.

Thanks, Eric.


In the engine blueprint, go down to the control values section and look for the entries for TrainBrakeControl and EngineBrakeControl, then look at the values defined for the notch data (the value says where each notch starts, in a range of 0.0 to 1.0). The engine brake control might be a simple lever but the train brake is usually an irregular notched lever (irregular means each notch has to be defined with a name and value, because they aren't evenly spaced).

Re: Train brake question. (lever throws in HUD vs psi.)

Unread postPosted: Sun May 11, 2014 6:45 pm
by Ericmopar
Thanks Mike, and for anyone looking, I had a typo that said "Engine brake" I meant "Train brake"

Thanks, Eric.