my territory...
Hello Jimmy,
SPorBUST's locomotive enginespec files work pretty well for me, same for Sureshot. Their enginespec files included dynamic braking.
The mass weight(for an SD70) should be around 188000, however Frank & Sureshot loads them up to about this, more than 190000 would be too heavy.
One SD70M so equipped would be overloaded per say for 7500 tons on anything but flat running however that depends strictly on how fast you want to accelerate the train, in other words how much patience you have.
The SD70Ace could conceivably pull 12,000 to 18,000 tons on flat ground. The CSX SD50 is rated this in some locations in Florida around the Bone Valley Phosphate District. But few of us have the patience to work like that!
A 100 car coal train should weigh about 14,000 tons at 143 tons per car, weighed separately & adjusted in the product allowed weight section of the config file.
On a 1.72% ruling grade, a SD70Ace is rated at 2400 tons, by BNSF(Crawford Hill is a good example). An SD40-2 would be rated 2000 tons.
I use
Guido73's 5-bay hoppers, with a mass of 24000 &...
queues
{
load
{
size 138959
initial-count 0
animated-mesh "load"
product-kuid <kuid:44179:60013>
}
}
(Don't do the math, it works).
This gives me a gross weight of (car+load) of 143 tons per car in-game.
I use DEM routes exclusively, so if the proper number of locomotives did not pull the train I would know it.
It works out to have too many locomotives & successfully negotiate a route than it does to stall out & have to divide a train(doubling or tripling the hill), then drop off units the next time you run the route until you have locomotives screaming on the grades...generally if (they) will pull the train at at track speed, they will also stop the train on dynamic braking.
In Cab running, AI Drivers usually never run in notch 8. I knew an SCL engineer in my younger days who always stayed around notch 6, which is what my AI Drivers usually run in & they do run track speed(50mph-NS).
In DCC mode, a default, non-changeable enginespec is applied & folks say they will pull the world straight up, but that's just to get you by until you learn how to run a train manually.
I have learned that if they can pull a train without running wide-open, I can too, it just all comes back to having the patience to let the locomotive(s) do the work & don't push them too hard, especially until the locomotive reaches 18-20mph.
Saves fuel too!
My point has always been that if your concerned about the way Auran Trainz runs, you must consider car weights as well as the locomotives & have a reasonably accurate enginespec file. The only faulty enginespec series found yet are kuid:9000:xxxx, by the user's own admission(I finally had to admit he was right, I'm sorry).
Practice of this is so necessary, as it is with prototype railroad engineers.
Also I'd leave the default UP SD40-2(really a SD40) for the ones that think it's purdy...:hehe:
