Millennium Force cable lift

How is Leviathan (Canada's Wonderland) able to utilize a chain lift (what appears to be a chain lift) when Millennium Force utilizes a cable lift for weight reasons? Aren't they both around the same lift height?

I could be wrong, but I think the primary reason for the cable lift is due to the steep lift hill on Millennium Force. They needed a better way to fit a lift hill in a smaller space and a cable lift was more practical.

Leviathan looks to have a traditional B&M ascent and is not quite as steep, allowing a chain to be more practical in some way. I don't know if there is some concern with the amount of force put on a chain with steeper hills that made them turn to a cable lift for MF or what, because Fahrenheit at Hershey uses some kind of a double chain mechanism for its 90 degree lift, yet it has much smaller trains.

When they built MF we were told at one of the Coastermanias that the reason

for using a cable lift was speed up the lift hill.

They said using tha cable lift gave them the abitiy to run 3 trains and 

they needed that to make the ride's capacity viable.

It's only a speed issue. Do you think the weight of the chain would matter relative to the weight of the train?

Wasn't chain weight one of the reasons that Steel Dragon has a double chain?

Not that that ride should be used as a guide for how to engineer a ride or anything.

^Agreed. Those "trains" are more like multiple yachts linked together. I feel like a triple-chain may soon be in order on Steel Dragon :)

If I did not forget all my statics:

If the train weighed something like 10,000lbs lets say on a 30* lift hill, the chain itself would only be 'responsible' for around 5,000lbs of weight, ignoring friction. The rest would transfer into the structure of the lift-hill.

Switching to a 45* lift would increase the chain load up to about 7071 lbs, an increase of approx 42%.

Additionally, going to a 55* lift would increase to 8192 lbs. And of course, 90* the full load on the chain of 10,000 lbs.

B&M has been using steeper lifts for some time now. The cable lift is mainly for speed. Lift motors are more high-torque then anything, not built for speed.