Max downhill grade at TM?

[Greg_Lewis]

The header says it. I understand that the max uphill grade is
3.69% at mile 10.18, on the track just past Little Falls. But what is the max downhill? Thanks.

[NP317]

I believe it is the 3.69% at Little Falls!
That's the grade that limits how many un-braked cars I can haul at Train Mt.!
Occasionally you see foot furrows in the down track ballast.
Oops...
~RN

[Berkman]

how long is the grade?

[NP317]

how long is the grade?

Maybe 150 feet, with easier grades on either end.
Long enough to scare an unsuspecting operator.
But it sure is fun to work a steamer up that grade!
Talks nicely.
~RN

[Berkman]

There are a few long grades at TM right ? Like the serpentine ?

[NP317]

There are a few long grades at TM right ? Like the serpentine ?

Yes. And the long grade to the north: 1.5% (?) for over a mile.
(I've not been to TM for 2 years. Will solve that in July.)
These grades separate the skilled steam engineers from the learning ones!
If you can hook up your valve gear for the hill and stomp your way right up,
then your engine is in good shape, and your water/fuel consumption will be noticeably lower.
My favorite challenges there.
~RN