[jared2982]

I've created a couple of new .eng and .wag files for some older MSTS equipment. In doing so I was attempting to adjust the couplers which were not set up exactly correct to begin with. In MSTS you could adjust the Z value in the CenterOfGravity line adjust the center line of the model where the center of the model is not necessarily directly in the middle between the two couplers, as is the case with many steam locomotives. The process is detailed at Steam4Me on a default flat car. My link My question is does OR read the value and accept it? If so I have not had any luck getting it to work so I am assuming it does not. Is there any other way to adjust this besides having the coupler over run each other?

[copperpen]

According to the Launchpad item on this, it was fixed in December last year in X3693, so it should be working in any subsequent version of OR

[QJ-6811]

See also the post: "gap between couplings".
As far as I know, this is never or no more resolved now? (I will not get it right anyway ........ )
But should there be a solution, I would like to hear that. :)

.

[vince]

As far as I know this is also a problem in MSTS and has been discussed for many years now.
Possibly there is a fix at the Steam4Me site.

regards,
vince

[jared2982]

I have tested it in the latest unstable build, using large numbers such as 3-5m in the 3rd value to easily tell if it is working or not, with no luck. If it was fixed at some point it seems to have been removed at some later point.

[jared2982]

vince, on 18 September 2017 - 10:31 AM, said:

As far as I know this is also a problem in MSTS and has been discussed for many years now.
Possibly there is a fix at the Steam4Me site.

regards,
vince

Vince, this is the solution from Steam4Me.

[DirtyRam]

jared2982, on 18 September 2017 - 11:08 AM, said:

Vince, this is the solution from Steam4Me.

Good day, took me awhile to find this. Remember reading it years ago.

Achieving Perfect Car Length Parameters, by Yuri Sos. Steam4Me website.

Hope this helps, Mike

[jared2982]

The problem with achieving perfect car length parameters with a steam locomotive is that the couplers are rarely ever the same distance from the model center. That's where the CenterOfGravity fix came into play. The issue with a steam locomotive is that the rear of the cab hangs over the tender in many cases with the location of the coupler beneath the cab floor. Therefore you must shorten the actual size of the engine in the .eng file to get the coupler distance anywhere close to right. Usually this leave too large of a gap between the engine and tender and brings the front coupler distance in to close. This was corrected by adjusting the CenterOfGravity parameter forward aligning both front and rear couplers in the correct location. It seems that this does not work in OR.

[jared2982]

Update... It now appears that OR does indead read the CoG line but it will only adjust the models position on the z-axis by "small CoG values" as mentioned here. I do not know what the maximum "small CoG value" is but so far 0.5m is accepted by OR.

[James Ross]

jared2982, on 21 September 2017 - 10:14 AM, said:

Update... It now appears that OR does indead read the CoG line but it will only adjust the models position on the z-axis by "small CoG values" as mentioned here. I do not know what the maximum "small CoG value" is but so far 0.5m is accepted by OR.

Any Z value over 1.0 will be discarded, with a warning printed to the log so you know what's happened.

If anyone has a good understanding of Size, CentreOfGravity, and the bounding box behaviour in MSTS (and some test data to back it up), we're all ears.