realistic steam operation?

You'll find them in the config.txt file for the tender (or the loco if it's a tank loco). Look for the queues container. The water capacity is set by the size tag in the load-water queue and fuel cap by the size tag in the load-coal queue.

Size is total volume of the queue specified in litres. Density used for water is 1kg/ltr. For coal the built-in Auran coal product that's used by most configs for locomotive coal has a density of 0.86 kg/ltr.

Water capacity of most tenders is usually given in volume measure so it's a straight forward conversion to litres. For coal it's usually given in weight or mass so you have to convert to volume based on density given above.

You can also use the actual volume of the coal bin if you know it. Be warned though that Auran uses litres as the units it's programmed to transfer amounts of product in and out of the queues but in the steam-engine config the fuel transfered from tender to fire box is specified in kgs/shovel. Unfortunately they hard coded the density used to make the conversion (0.86 kg/ltr) so working with something other than their std coal is a pain if you want to simulate accurate differences between types of fuel. They also work only with integer values of litres when transfering a product in and out of a queue which also complicates things if trying to be too accurate.

Bob Pearson
 
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The Netherlands are a small country.
The city of HOORN is not that far by train.
send me a mail at to check if I am on duty on the engines


in all respect, I think it would be wise that you should hide that email address of yours that way you won't be a victim of spam!
 
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The correct number is kuid2:81997:51009:3.

Bill.
Hello Bill,

I've tried to get that one several times now, but somehow I can't download it. I did obtain your spreadsheet from a link in the original thread some time ago, but I presume this is an updated edition.
I'm trying to fix some 3ft steamers from bdaneal, but I keep getting unprototypical wheelspin when lowering the cutoff value with the sheet version I have at the moment. What seems to be the reverse of what should be happening...

Greetings from overcast Amsterdam,

Jan
 
You don't reduce the cut-off to negative values when going forward by any chance? That will stop the loco better than any brakes and cause wheel spin.

Bill.
Hello Bill,

:D no, not really. Sometimes it starts with regulator 20 and cutoff 45%. Driving with regulator 100 and cutoff 19% is completely out of the question. Breaking by reverse is obviously not the way to go, unless you're a ships captain of course. :hehe:

Greetings from overcast Amsterdam,

Jan
 
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