19 replies to this topic

[DonaldMReif]

Something I've noticed on a few of Doppelmayr's recent installations is that hold-down assemblies seem to have a set of support sheaves on them.

It's noticeable here on the Avanti Express lift:


And on the Centennial Express lift:


I'm wondering why there's a set of two support sheaves on the hold-down assemblies on these lifts and possibly others.

[Razvan]

RPD sensors, need to be below the grip or else funny signals are given.
Orange things between the smaller sheaves in your pics (old version), black box in the attached picture (new version).

Attached File(s)

•  newRPD.jpg (63.64K)
  Number of downloads: 108

This post has been edited by Razvan: 05 January 2016 - 11:56 PM

[2milehi]

We fought with Doppelmayr for YEARS with this issue on River Run Gondola. That machine has 4 hold down towers and we would get all kind of nuisance faults on our RPD system. When Doppelmayr presented the mini-combo to us Doppelmayr said that Keystone would have to foot the bill. Then when Beaver Creek got their new Centennial lift with the new mini-combos they knew that we would scream about it. In the end Doppelmayr installed the mini-combos for free.

Notice that Vail has the American assemblies and Beaver Creek has the Euro assemblies. This issue only happens with the Augamatic grip.

This post has been edited by 2milehi: 06 January 2016 - 10:01 AM

[floridaskier]

The new gondola and King Con at PCMR have these too (both on the American side and the European side), was wondering the same thing. How did they set it up before these? Anyone have a picture? Why would that only happen with the Agamatic grips?

[DonaldMReif]

Vail's other six pack, the Mountaintop Express lift, doesn't have the mini-combo sheave sets on its tower 1, at least not yet. It will be interesting to see if the Sun Up Express lift will have them when it gets built this summer.

[Razvan]

European lift, built by Doppelmayr in 2007, DT grips (torsion bars), has this on all hold-down towers that has RPDs, so it's not restricted to Agamatics.

[Razvan]

"Vail's other six pack, the Mountaintop Express lift, doesn't have the mini-combo sheave sets on its tower 1, at least not yet. It will be interesting to see if the Sun Up Express lift will have them when it gets built this summer."

Tower 1 doesn't usually have RPDs (mine didn't, anyway).

This post has been edited by Razvan: 07 January 2016 - 07:09 AM

[lift_electrical]

I would think tower one would be one of the more important places for an RPD.


Jeff

[2milehi]

All US Doppelmayrs since Efectors have been added have them on all towers (including hold-downs).

Copper Mountain has a DT grip and American towers (no mini-combo on hold-downs). Sunday River has Agamatics and American towers (no mini-combo on the hold-downs)

[Razvan]

[why this thing does not accept quotes?]

Our tower 1 was within jumping distance from the drive station, perhaps that's why it lacked RPDs.

[Backbowlsbilly]

DonaldMReif, on 06 January 2016 - 10:12 PM, said:

Vail's other six pack, the Mountaintop Express lift, doesn't have the mini-combo sheave sets on its tower 1, at least not yet. It will be interesting to see if the Sun Up Express lift will have them when it gets built this summer.

Do we know that Sun Up is a Doppelmayr for sure yet?

[2milehi]

Mountain Top Express - no mini-combo, American towers, Agamatic grips.
 Mountain Top.png (715.31K)
Number of downloads: 45

Either Doppelmayr put the mini-combos on Avanti to be proactive and avoid RPD issues, or Vail requested that Avanti had the mini-combos because of all the trouble Keystone had with RPDs.

[2milehi]

If you look closely and see the difference between Avanti and Centennial, the towers are totally different.

 BVV.png (395.22K)
Number of downloads: 71

[vons]

2milehi, on 10 January 2016 - 09:08 PM, said:

If you look closely and see the difference between Avanti and Centennial, the towers are totally different.

BVV.png

Just guessing but I think Centennial uses larger grips, rope and sheaves than Avanti due to the combination of gondolas on the line, therefore the euro style assemblies

Garaventa CTEC used to place the RPD under the rope on hold-down assemblies but they didn't add the mini sheaves they just made a bracket to hold it there.

This post has been edited by vons: 11 January 2016 - 08:06 AM

[2milehi]

But at Park city there is a combination of American towers and European towers on the Quicksilver lift...

[vons]

2milehi, on 11 January 2016 - 08:21 AM, said:

But at Park city there is a combination of American towers and European towers on the Quicksilver lift...

Yah that lift is an oddball, I thinking it is like Yan using combination of regular and large sheaves on the same lift based on the loading.

[2milehi]

OK, I think I got this. A six-pack would have to use a A-108 C grip.

2013 - Doppelmayr installs Mountain Top at Vail, Doppelmayr doesn't have a fix for the RPD on hold-downs
2014 - Doppelmayr installs Centenial at Beaver Creek, installs the mini-combo at Beaver Creek and Keystone's River Run Gondola
2015 - Doppelmayr installs Avanit at Vail, mini-combo is installed (IMO that is not necessary, the RPD issue is only on an Agamatic with Euro towers)

This post has been edited by 2milehi: 11 January 2016 - 07:04 PM

[RibStaThiok]

If I am not mistaken, in order to get Quicksilver in as "quickly" as they needed to, they were not going to be able to manufacture enough of one type of towers quickly enough to meet the deadline so it was approved to have a combo of both types.

[floridaskier]

Or does the European setup have to do with wider line gauge on the PCMR (European) side due to the gorge? They certainly look wider and the PCMR end has one extra window panel on the ends vs. the Canyons (American) end. I'll try to find a picture that shows what I mean. Both the American and European sides have the RPD sheaves.

[NHskier13]

It's not just in the terminal, I saw, in DonaldMReif's collection of photos of the new Avanti Express ; look closely at the assemblies and you'll see one closest to his chair on the right and one closer to the incoming chair on the left ;