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Message |
    
James F. Thompson Jaime (Blueboy)
| | Posted on Thursday, March 07, 2002 - 06:18 pm: | 
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Have a 10k winch on the RR mounted on an ARB. Due to a snow storm in OK, the back roads turned to ice. While driving back from the dog walk, came across this guy in a 2-wheel PU towing a trailer on which was a really nice old style XKE and totally going nowhere. Felt sorry for the guy and proceeded to tie the back of the RR to trees and winched him 3 set-ups to get him going again. Single pull. Now, a PU, trailer, and Jag must have weighed more than 10k pounds yet the winch did not seem to "groan" or anything during the pulls. So, the question is - how can you tell your maxing out your winch and possibly doing some damage somewhere?
Thanks in advance.
Jaime |
Rob Davison (Pokerob)
| | Posted on Thursday, March 07, 2002 - 07:02 pm: |
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it will begin to go really slow, then stall, then smoke. stop if you see smoke.
you will burn out the motor before the damage the gears
also they amount of resistance they provided was probably not 10,000 lbs.. since they could slide or roll along the ground. watch espn one night when they have those worlds strongest man competitions, they have guys pulling 10 ton busses.
also your cable will start to ping when it gets under some serios stress. it's dirt and sand being crushed i the cable.
rd |
James F. Thompson Jaime (Blueboy)
| | Posted on Thursday, March 07, 2002 - 07:41 pm: |
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Rob,
Thanks for the info.. When you say "stall", like it just stops? So, if I stop before it stalls and re-adjust to say a double line pull, should be ok? Yeah, thought about the rolling resistance vs just weight and figured that must be it. Been awhile since doing free-body diagrams. Was pretty cool though as actually had to plan for tieing back the RR as it was on complete ice. Needless to say, OK drivers generally suck in Winter driving. Very cool XKE though.
Jaime |
Rob Davison (Pokerob)
| | Posted on Thursday, March 07, 2002 - 10:56 pm: |
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yeah
it just slows to a stop. a good idea is too keep placing your hand on the motor, when it starts to get hot, let it rest. keep as much line out as possible, there is a mechanical advantage when you have a smaller diameter to spool onto, double back early too, it gets more rope out and less force for the winch.
nothing like being the hero with the winch 
rd |
James F. Thompson Jaime (Blueboy)
| | Posted on Thursday, March 07, 2002 - 11:22 pm: |
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Ok, thats good to know as all the other winch events never really have come this close to a real pull. As it was about 5F out, the motor never really got warm to the touch so that tell tale sign didn't happen. The trees really didn't allow for double pull as too much distance, yet, always good to remember the mechanical basics especially as a Civil PE. I do bridges!
Yeah, the guy and his wife were quite relieved that things were starting to improve for them. Need to inspect the rope as no doubt there was the opportunity for mashing and kincking. What is your take on the fake wire rope??
Again, thanks for the skinny on this.
Bliss and I hope to see you out here.
Jaime
ps - hello from Lima, Peru which is where "I'm at - right behind the at". By the pants and that. |
Rob Davison (Pokerob)
| | Posted on Friday, March 08, 2002 - 10:24 am: |
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so since yesterday you flew to peru? or are you down there in the RR. you have me all cornfused.
check your email
rob |
Ali
| | Posted on Friday, March 08, 2002 - 02:17 pm: |
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It's also a good idea to apply some new (or used) motor oil all over the cables. This helps with friction and corrosion. The hoisting industry likes to keep its winch cables a bit moist. |
jp
| | Posted on Thursday, March 28, 2002 - 02:33 am: |
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Advice here is the synthetic rope from Masterpull is the bee's knees - VERY light, dead (ie no energy to hurt you with if it breaks under load, unlike steel), VERY strong, no danger from broken strands. Only caveat is there is a potential temperature sensitivity. This involves either heat coming from a winch drum with a brake inside it (Warns etc), or from sun exposure in hot climates - 120F here in Saudi in summer - need to keep it covered when not in use here. The weight is incredibly low - the hook is heavier than the rest put together. |
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