Jump to content


Yan Type 3 Grip


  • You cannot reply to this topic
41 replies to this topic

#1 liftmech

    lift mechanic

  • Administrator II
  • 5,906 Posts:
  • Interests:Many.

Posted 14 January 2004 - 07:42 AM

A while back Allan requested some photos of the Yan Type 3 grip. This was the replacement for the older Type D and T grips, and went into service around 1981.

Attached File(s)


Member, Department of Ancient Technology, Colorado chapter.

#2 liftmech

    lift mechanic

  • Administrator II
  • 5,906 Posts:
  • Interests:Many.

Posted 14 January 2004 - 07:44 AM

From the top. (S-lift, 1983)

Attached File(s)


Member, Department of Ancient Technology, Colorado chapter.

#3 liftmech

    lift mechanic

  • Administrator II
  • 5,906 Posts:
  • Interests:Many.

Posted 14 January 2004 - 07:45 AM

On line, bottom view. You can see the end of the bolt in the mobile jaw; this is how spring tension is adjusted. (R-lift, 1982)

Attached File(s)


Member, Department of Ancient Technology, Colorado chapter.

#4 liftmech

    lift mechanic

  • Administrator II
  • 5,906 Posts:
  • Interests:Many.

Posted 14 January 2004 - 07:55 AM

The TB-81 carrier. Yan didn't galvanise these; he did 'bright finish' instead. The surface of the steel is slightly rainbow-hued as a result.

Attached File(s)


Member, Department of Ancient Technology, Colorado chapter.

#5 iceberg210

    Bald Eagle Lifts: Defying Gravity

  • Administrator II
  • 1,064 Posts:
  • Interests:42

Posted 14 January 2004 - 08:03 AM

on the topic of grips...

how did the Riblet internal grip work and which do lift mechanics like better interal or external
Erik Berg
Bald Eagle Lifts: Defying Gravity
http://www.baldeaglelifts.com

#6 Eric

    Established User

  • Member
  • 252 Posts:

Posted 14 January 2004 - 11:37 AM

Wow, nice pictures
Anyway, is that the grip that was not safe on Fg's
-ERIC

#7 KZ

    Multipurpose Machine

  • Industry II
  • 2,087 Posts:
  • Interests:Howdy folks, Im Zack and I live in California.

Posted 14 January 2004 - 12:30 PM

cool pictures. I like the look of those yan chairs
Zack

#8 Allan

    Maintenance Manager

  • Administrator I
  • 2,733 Posts:

Posted 14 January 2004 - 04:45 PM

Thanks! Those grips don't have the movable ramps, so they must be quiet.... Not like our noisy ones!! :)
The Riblet grip is inserted into the core of the haul rope. Both designs have their positive and negative aspects. Insert grips don't slip (well they better not!!) have fewer moving parts, and are very smooth on the line equipment. However, to relocated them you must detension the section haul rope, remove the grip, replace the chunk of core, retension the rope, cut out a piece of core slide the grip in and retension the rope. The clamp-type grips are easy to move, and remove. They usually provide a "rough" ride, and have more parts that can fail. I think I've covered most bases here, but I prefer the clamp type to the insert type.
- Allan

#9 iceberg210

    Bald Eagle Lifts: Defying Gravity

  • Administrator II
  • 1,064 Posts:
  • Interests:42

Posted 14 January 2004 - 06:34 PM

Thanks

One more thing

Was Riblet the only ones to use the internal system?
Erik Berg
Bald Eagle Lifts: Defying Gravity
http://www.baldeaglelifts.com

#10 SkiBachelor

    Forum Administrator

  • Administrator II
  • 6,242 Posts:
  • Interests:Hi, I'm Cameron!

Posted 14 January 2004 - 06:36 PM

Yes, they had a patent on it. Although it was a U.S. or North American patent, so a lift manufacturer over in Europe could be using the same thing if they wanted too. So there could be another manufacturer that did.
- Cameron

#11 Kelly

    Established User

  • Administrator II
  • 2,913 Posts:

Posted 14 January 2004 - 09:05 PM

Other aspects of insert grips.

If setup properly for each type of grip relocation an insert grip still takes 3 times as long to move.
Due to the aspect of detensioning the haul rope twice for each grip relocation, insert grips are approximately 300 times as dangerous to relocate.
A broken finger on a Riblet grip is impossible to see with the grip in the haulrope.
Two broken fingers on a Riblet grip will cause a lift mechanic to wet his pants.
About half of all Riblet grips have a short usable life. See Riblets web site for retirement criteria.
Riblet grip failures prompted the stronger grip testing codes.
Riblet grips can be removed without detensioning, not an advertised feature.
When repairing a haul rope strand, many lift mechanics wished insert grips slipped.
www.ropetech.org

#12 liftmech

    lift mechanic

  • Administrator II
  • 5,906 Posts:
  • Interests:Many.

Posted 15 January 2004 - 09:37 AM

...and that's why the Riblet detensioner is unofficially called the 'Riblet Finger Amputation Device'. :blink: Even while moving and storing the detensioner, it's still dangerous- I broke my thumb a while back while moving the thing into the shop. :stretcher: If you don't have it compressed while moving, it flops around and the jaws bite (pun intended).
I like the clip for its ease of inspection and maintenance, and external grips for their ease of relocation. Yes, the Type 3 grip is much queter than the older Type Ds and Ts.
Eric- I don't know of any Yan fixed grips that were unsafe. These have worked pretty well for the last 22-23 years, although they do wear out like anything else. The 400 series stainless used in the grips is a bit softer than ordinary steel, and tends to conform to the crowns and valleys of the haul rope.

Quote

Two broken fingers on a Riblet grip will cause a lift mechanic to wet his pants.

I've seen that... I think that was the year we bought all new clips for that lift because 10 of 14 in the sample group were broken to some degree. The new clips don't have ears anymore. I wonder why?
Member, Department of Ancient Technology, Colorado chapter.

#13 Dr Frankenstein

    C.S.I.A. Level 1

  • Member
  • 436 Posts:
  • Interests:Computers, skiing

Posted 15 January 2004 - 02:48 PM

LiftMech said:

I don't know of any Yan fixed grips that were unsafe.


Due to the centrifugal force, this type of grip may slip when passing the bullwheel.

#14 SkiBachelor

    Forum Administrator

  • Administrator II
  • 6,242 Posts:
  • Interests:Hi, I'm Cameron!

Posted 15 January 2004 - 02:56 PM

I think that was the CTEC grip we were talking about. Paradise at Red Mt was having the problem from what Allan was saying I believe.
- Cameron

#15 Dr Frankenstein

    C.S.I.A. Level 1

  • Member
  • 436 Posts:
  • Interests:Computers, skiing

Posted 15 January 2004 - 04:58 PM

Yes, but all inverted grips have this problem.

#16 Allan

    Maintenance Manager

  • Administrator I
  • 2,733 Posts:

Posted 15 January 2004 - 05:31 PM

It's only Draw Hook type grips. YAN grips are not this type (Unless the Type 3's are different...) and generally don't slip. As SkiBachelor said - the CTEC grips slip 2 meters plus over the course of our season.
- Allan

#17 KZ

    Multipurpose Machine

  • Industry II
  • 2,087 Posts:
  • Interests:Howdy folks, Im Zack and I live in California.

Posted 15 January 2004 - 07:19 PM

wow, thats a lot
Zack

#18 liftmech

    lift mechanic

  • Administrator II
  • 5,906 Posts:
  • Interests:Many.

Posted 17 January 2004 - 09:04 AM

It can be, but only if it's one or two grips that are slipping while the rest are moving less than a metre. The Type 3 grips pictured above move probably 20-30 cm per season on average, which isn't really very much. As long as all the grips are 'migrating' the same distance, it's all good. :)
Member, Department of Ancient Technology, Colorado chapter.

#19 lastchair_44

    Established User

  • Administrator II
  • 1,159 Posts:

Posted 19 January 2004 - 08:06 PM

True that...migration is a good thing on our fixed grips. No migration means you went to tight
-Jimmi

#20 poloxskier

    Established User

  • Industry I
  • 1,626 Posts:

Posted 01 March 2005 - 10:08 AM

Does anyone have pictures of the Yan D and T grips? Also how would someone like me who has not worked on any lifts identify the differences between the two?
-Bryan

Theres a place for all of God's creatures, right next to the mashed potatoes.

"You could say that a mountain is alot like a woman, once you think you know every inch of her and you're about to dip your skis into some soft, deep powder...Bam, you've got two broken legs, cracked ribs and you pay your $20 just to let her punch your lift ticket all over again"





1 User(s) are reading this topic

0 members, 1 guests, 0 anonymous users