Considering A North American Route

[Hawk]

It is possible to create quite sharp curves in RailWorks, all that is needed is your own track-rule.

Well, I never got that far with it.

[arizonachris]

@Chris...
I think the problem with the "big" power is getting round the curves, though I guess in a simulated world as you're really running on a database line you will probably get round any curve regardless of wheelbase. Not sure how RW approaches the physics of curve flange resistance. I was thinking more a BritKits RS3 or GP7/GP9.
.

Hmmmm, didn't think about that. But, the Big Boy is articulated so that it could handle the curves on the Cajon Pass route and others.

Well, heck, if it doesn't work, I can say I gave it a try!