[Coolhand101]

sim-al2, on 22 March 2016 - 02:14 PM, said:

OR has a new parameter, "ORTSDriveWheelWeight ( x )", which allows the actual weight on the locomotive drivers to be specified, which IMO is a far superior method to the NumWheels method.

I've seen axle load of 19 tons for a diesel locomotive, ie 114t divided by 6 axles is 19 tons.

Is the 'ORTSDriveWheelWeight' based from this or is it something completely different ?

Thanks

[sim-al2]

Coolhand101, on 22 March 2016 - 03:10 PM, said:

I've seen axle load of 19 tons for a diesel locomotive, ie 114t divided by 6 axles is 19 tons.

Is the 'ORTSDriveWheelWeight' based from this or is it something completely different ?

Thanks

No, it's just the total weight on all driven axles. (Manual states: Total weight on the locomotive driving wheels )

A hypothetical example:

Consider a 1Co-Co1 diesel locomotive that weighs 200,000 lbs, and weight is spread across the bogies such that all axles carry 25,000 lbs each. Then, you would use

ORTSDriveWheelWeight(150000lbs)

If your locomotive has all the weight on driven axles, you don't need to worry about this. It's found in the OR manual just under the steam parameters (Page 99), but works for all locomotive types.

[Coolhand101]

sim-al2, on 22 March 2016 - 03:23 PM, said:

If your locomotive has all the weight on driven axles, you don't need to worry about this.

The diesel locomotive in question has all the weight on the driven axles ( Co-Co ). However, i do have a few 1Co-Co1 diesel locomotives that i have not yet updated for OR.

Thanks

[Hamza97]

What about this:
Loco total weight 119t
Wheel arrangement Bo1-1Bo
Weight on drive wheel ~80t
What value should I use for Numwheels()..??

[James Ross]

James Ross, on 22 March 2016 - 01:46 PM, said:

I think I've spotted the problem; before X3460 we defaulted to 4 driven wheels (that's wheels per "NumWheels()") which is used in wheel slip and possibly other calculations, but after X3460 we defaulted to 0 by mistake.

Has anyone reported a bug on Launchpad yet? I'll fix bug this tomorrow or someone else can take it tonight - the field in question in LocoNumDrvWheels around line 299 of Orts.Simulation/Simulation/RollingStocks/TrainCar.cs.

This should be fixed in X3484.

[Coolhand101]

James Ross, on 23 March 2016 - 03:53 PM, said:

This should be fixed in X3484.

Thank you James.