Keechelus Double
#2
Posted 01 December 2003 - 12:27 PM
My answer to a forum question at Hyak.net
Posted on Nov 9.
Good guess on haul rope finish time.
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Hours to Change a Haul Rope:
Having done this at least 30 times here's my estimates on an average lift (3000', 20 towers, 120 chairs, crappy access, clean site when finished).
All major groups with total man hours-
Unload rope from truck and transport to lift 8 mhrs
Partially detension lift 20 mhrs
Remove chairs and clips from rope 50 mhrs
Clean and NDT all chairs and clips 32 mhrs
Fully detension lift and lower haul rope to ground 50 mhrs
Setup, and test spooling system 50 mhrs
Splice new rope to old 50 mhrs
Pull new rope 50 mhrs
Measure and tension new rope 50 mhrs
Move old rope to bone yard 8mhrs
Splice new haul rope 70 mhrs
Release rigging in splice area 10 mhrs
Hang rope on towers 50 mhrs
Reattach support sheaves at lower hold down towers 4 mhrs
Tension haul rope 20 mhrs
Worry about lack of carriage travel in either direction 4 mhrs
Partially detension lift for clip installation 10 mhrs
Restack or repaint all chair numbers 4 mhrs
Install clips and chairs 60 mhrs
Return all slings to storage 8 mhrs
600+ man hours
5 men 120 hours
5 men 3 weeks
Expected life of a haul rope:
500' long lift running 1500 hours per year = 5 years
2500' long lift running 1000 hours per year = 25 years
Ryan B
#3
Posted 01 December 2003 - 03:35 PM
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#5
Posted 01 December 2003 - 04:51 PM
#7
Posted 02 December 2003 - 03:18 PM
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#8
Posted 02 December 2003 - 03:18 PM
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#9
Posted 02 December 2003 - 03:18 PM
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#11
Posted 02 December 2003 - 08:03 PM
I get the idea Booth is 'over it', to use a slang term. It seems that they just don't put in the effort it would take to keep an area running, even though in some cases it would be a minimal investment. If they are treating Sierra and Northstar like they have been treating Snoqualmie, their future doesn't look good.
#12
Posted 07 December 2003 - 06:09 PM
#13
Posted 08 December 2003 - 05:03 AM
#14
Posted 08 December 2003 - 11:59 AM
I believe you are looking at a Jim Ellis redesign of Riblets detensioner. Jim and his son own Aerial Engineering. Jim was Riblets mechanical engineer who left a few years before the main owner Tony Sowder passed away. After a few years of contested ownership Tony's son Doug took over the company.
I actually have fabricated a few tuck presses; boy they can make a bad splicer look good.
Ryan B
#15
Posted 08 December 2003 - 12:29 PM
liftmech, on Dec 8 2003, 05:03 AM, said:
Hah! That's what we did :) Beat on the rope sitting on a stump!
#16
Posted 09 December 2003 - 08:37 AM
#18
Posted 09 December 2003 - 08:54 AM
Aerial Engineering does redesigns, new profiles, supplies used parts, designs new ones, and generally does about everything except build brand-new lifts.
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