eolesen wrote: ↑Tue Mar 17, 2020 3:44 am
Disagree.
Being able to use the same type of cars on all routes in/out of NYP and CUS would cut down the total number of cars needed systemwide.
Right now, with Amtrak running at less than 50% load factors across more track miles than they're running above 50%, the extra weight of the double deckers winds up burning more fuel, and probably adds to wear/tear on track because the cars are 25%+ heavier.
Weight of a Superliner sleeper is 80-85 tons, of a Viewliner sleeper is around 60 tons. Note, a Superliner II sleeper weighs about 5 tons less than a Superliner I sleeper.
80/60 = 1.33 and 85/60 = 1.42
So I would suggest the weight of a Superliner is at least 33% heavier than a Viewliner.
A Superliner sleeper has 21 total rooms and roomettes, a Viewliner sleeper has 15 total rooms and roomettes,
21/15 = 1.40
For single occupancy a Superliner passenger could require less weight than a Viewliner passenger.
A Superliner sleeper max capacity is 44 , a Viewliner max capacity is 30.
44/30 = 1.46
So a passenger on a Superliner could require less weight than a passenger on a Viewliner.
So the heavier Superliner could require less weight per passenger than a Viewliner, or about the same weight depending upon which model Superliner is used in the comparison. Its' higher capacity per car basically matches its' extra weight.
We could look at coach cars as well, but without getting into too much details, let's' just look at their capacity ratio.
Superliner coach max capacity is 74 passengers, Amfleet II max capacity is 59 passengers.
74/59 = 1.25
Surfliner coach max capacity is 90 passengers, Amfleet I coach max capacity is 72 passengers.
90/72 = 1.25
So, assuming the same weight difference of 33%, the Amfleet capacity disadvantage of 25% makes it around 8% more weight efficient per passenger over a Superliner.