Originally Posted by BushMogulMaster
Let me debunk a common misconception while this thread is still young. Detachable (high speed) chair lifts usually do not have a higher capacity than their fixed grip counterparts ...
The industry standard capacity for a quad is 2400pph (people per hour), regardless of whether it is detachable or fixed grip. The length of ride is different, but the number of people being put on the mountain is exactly the same.
That's an awfully convoluted way to calculate capacity. Here's a simpler approach:
One chair every 6 seconds == 10 chairs per minute == 600 chairs per hour
4 people per chair X 600 chairs/hour == 2400 people/hour
Why bother with rope speed and chair spacing?
> the number of people being put on the mountain is exactly the same.
Not exactly. It depends on the size of the crowd. Let's look at a simple example: a ski hill with exactly one fixed grip quad lift. To make the numbers simple, let's assume that it takes 10 minutes to ride the lift up the hill and 5 minutes to ski down. Since it takes 15 minutes for a skier to do a lap on the hill, the skier can do 4 laps in an hour.
Now, let's assume that the hill replaces the lift with a high-speed detachable. Now the ride up is only 5 minutes, it takes 10 minutes to do a lap, so the skiers can do 6 laps per hour. Let's compare what happens when 100 skiers show up:Fixed grip
: With each skier doing 4 runs per hour, the hill will experience 400 runs per hourHigh-Speed
:With each skier doing 6 runs per hour, the hill will experience 600 runs per hour
There's 50% more traffic with the high speed - they do put more skiers on the hill when the crowd is light. Of course, once the crowd becomes big enough the lift will be at capacity and the hill will experience 2400 runs per hour regardless of which lift is being used.
So, it's basically true that high speed lifts and fixed grips put the same number of skiers on the hill once the crowd reaches a certain size
. Below that number, the high-speed puts more skiers on the hill. High-speed lifts can make a resort seem more crowded with a smaller number of patrons.