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How can a J-Bar turn (in 1936)?


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#1 sheave

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Posted 06 July 2016 - 08:26 AM

Here is a crop from a picture that shows the first single chair at Proctor Mtn. and the J-Bar that was running below it. It took me some time to realize that the J-Bar had an angled station that looks like many Poma stations. I guess they have used a bullwheel to make the turn when going up-hill, but what about the down-hill side?

Attached File  proctor_jbar.jpg (37.83K)
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From what I've heard, the hanger was not fixated on the haul rope (there was a little clamp that was holding the hanger in place, but the hanger itself was able to rotate around the rope). It might be the case that the hanger was deflected to make it pass the second bullwheel, because other systems like Bachmann have not been invented back then.

#2 NHskier13

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Posted 06 July 2016 - 08:56 PM

Angled sheaves maybe? I can't see the photo well at all so I can't see the degree of the turn
Youtube (Lift rides and stuff) https://www.youtube....I9OAqTC5uld-6oQ

#3 sheave

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Posted 07 July 2016 - 05:09 PM

Unfortunately that's the only picture that shows the turn and there are no pictures of the angled station at all.

As the valley is quite narrow, the lift line must have followed what is today the Proctor Mtn. Loop Trail (maybe a bit more south so the turn's angle was even greater):
https://www.google.d...3m1!1e3!5m1!1e4
Notice the remnants of the single's drive terminal to the right- I've found parts of a rope down there.

So I guess the turn was too large for angled sheaves.

#4 Allan

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Posted 08 July 2016 - 09:05 AM

I can't see whats happening the pic clearly enough, and I know nothing about the lift but you can use three bullwheels to make a turn. In the attached picture, there would be another bullwheel off to the left somewhere.

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#5 sheave

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Posted 09 July 2016 - 01:37 PM

I don't think that technique was used here as it was invented in the 1970s by Buehler. And it requires a huge construction (even for a T-Bar) and another bullwheel so we would see that in the picture.





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