What is special about the red sheave in a Doppelmayr sheave set?
0
Doppelmayr red sheave
Started by keith, Nov 15 2004 04:34 AM
12 replies to this topic
#2
-
- Administrator II
- 5,918 Posts:
lift mechanic
- Interests:Many.
Posted 15 November 2004 - 05:30 AM
It weighs a ton. Technically, it's called a 'drop sheave', and it is there to make that particular sheave assembly rotate and break a brittle bar in the event of a deropement. Normal Doppelmayr (and Poma, for what it's worth) sheaves are cast aluminum bodies with aluminum flanges. The drop sheave is a steel body with a steel flange, and there are also aluminum-bodied sheave with steel flanges that also serve as drop sheaves. It's all very confusing to a poor Poma monkey like myself, but apparently it makes sense to the Germans.
Member, Department of Ancient Technology, Colorado chapter.
#4
-
- Industry II
- 24 Posts:
New User
Posted 21 November 2004 - 01:57 PM
Allan, on Nov 15 2004, 06:17 AM, said:
They are definately heavy!! Even the T-bar ones!! I remember picking one up for the first time, and thinking this little thing shouldn't be this heavy!
<{POST_SNAPBACK}>
<{POST_SNAPBACK}>
According to the documentations for our Doppelmayr BP 680 T-bar, the red sheave is 20,2kg and the normal one is 12,5kg heavy...
#8
-
- Member
- 88 Posts:
Established User
- Interests:Roller Coasters, Ski Resorts, Waterparks, Arcades, and Computer Games.
Posted 21 November 2004 - 09:48 PM
When I went hiking at Ski Sunrise I found a poma lift stick. I tried to lift it but it took me, my dad, and my brother to get it off the ground.
#9
-
- Administrator II
- 5,918 Posts:
lift mechanic
- Interests:Many.
Posted 22 November 2004 - 06:33 AM
Poma sticks are surprisingly heavy, aren't they? We have to swap them out regularly on Storm King, and it takes two of us.
You want a heavy sheave- try Doppelmayr's terminal deflection sheaves. They are 700 mm in diameter and weigh 136 kilos...
You want a heavy sheave- try Doppelmayr's terminal deflection sheaves. They are 700 mm in diameter and weigh 136 kilos...
Member, Department of Ancient Technology, Colorado chapter.
#11
-
- Industry I
- 1,626 Posts:
Established User
Posted 23 November 2004 - 09:56 AM
I've noticed that some yans have red sheves as well. Are they similar in function to the Dopps?
-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"
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"
#12
-
- Administrator II
- 6,242 Posts:
Forum Administrator
- Interests:Hi, I'm Cameron!
Posted 23 November 2004 - 10:15 AM
Nope, instead they are used to ground out the static electricity that builds up on the haul rope as it accumulates passing over the sheaves. Poma has this same type of set up to I believe.
There is a topic about this somewhere on the forum if your interested in searching for it.
There is a topic about this somewhere on the forum if your interested in searching for it.
- Cameron
#13
-
- Administrator II
- 5,918 Posts:
lift mechanic
- Interests:Many.
Posted 27 November 2004 - 04:50 AM
floridaskier, on Nov 22 2004, 04:17 PM, said:
Pardon my ignorance, but what's a lift stick?
<{POST_SNAPBACK}>
<{POST_SNAPBACK}>
The skier-towing apparatus on a surface lift such as a platter is called a stick.
Attached File(s)
-
M_stick.jpg (39.42K)
Number of downloads: 20
Member, Department of Ancient Technology, Colorado chapter.
1 User(s) are reading this topic
0 members, 1 guests, 0 anonymous users
