Hand winch capacity
Submitted: Thursday, Nov 20, 2008 at 15:34
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Kirk and Jeanette
I am looking to buy a hand winch but have a question relating to the required capacity. I have done some research and read some articles from this site. They say that the winch should be rated at 1 1/2 times the weight of the vehicle. If the vehicle weighs 2 tonne then the winch should be rated at 3 tonne. The
winches I have seen at various shops are generally rated at 2.4 or 2.5 and they say that is all you need. What are your thoughts on this as I don't want to spend good money on something that isn't man enough for the job.
Reply By: Member - Oldbaz. NSW. - Thursday, Nov 20, 2008 at 16:19
Thursday, Nov 20, 2008 at 16:19
At no time (I hope) will you have the weight of your vehicle
suspended by your winch. The actual weight on the cable will
vary in accordance with the situation. With a hand winch of the
Tirfor or similar variety, I would suggest the limiting factor will be
the amount of human energy your team can bring to bear. I
doubt the capacity of the winch will be exceeded, providing
proper attachments are made..........oldbaz.
AnswerID:
336234
Follow Up By: Member - Kiwi Kia - Thursday, Nov 20, 2008 at 16:46
Thursday, Nov 20, 2008 at 16:46
I am with 'Oldbaz', you should try and borrow a Tirfor and actually try using it and see just how hard it is to use. You could
well change your mind if you find that you are not physically strong enough to operate it.
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Follow Up By: Member - Oldbaz. NSW. - Thursday, Nov 20, 2008 at 16:54
Thursday, Nov 20, 2008 at 16:54
AAAh!! I see you have used one too...Not quick or easy but they remain a viable alternative to an expensive electric jobbie, & work
in any direction as
well.........oldbaz.
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Follow Up By: Member - Kiwi Kia - Thursday, Nov 20, 2008 at 16:57
Thursday, Nov 20, 2008 at 16:57
Half the trouble is getting the thing to stay still while you try and work that short handle !! And if you are on a slippery slope - forget it. :-))
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Follow Up By: garrycol - Thursday, Nov 20, 2008 at 19:53
Thursday, Nov 20, 2008 at 19:53
Then why are
well fitting 9000ib and 12,000ib electric
winches to our 4wds - why not save a bit of money and fit 5000ib electric
winches in line with 2.5t (5000ib) hand
winches that are recommended.
Garry
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603954
Reply By: Wizard1 - Thursday, Nov 20, 2008 at 16:42
Thursday, Nov 20, 2008 at 16:42
Hand winch capacities are based on their intended use as vertical lifting gear, hence the 1600 kg capacity.
You basically double that for a horizontal pull, put a few snatch blocks into the equation and the odds get even better.
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Follow Up By: Crackles - Thursday, Nov 20, 2008 at 19:04
Thursday, Nov 20, 2008 at 19:04
Hand
winches in general are rated to a safe working load unlike an electric winch which is rated at it's greatest pulling capacity just prior to stall. They may get up around double the rated pull at which point the shear pin will probably let go. (If you are strong enough)
A T516 Tirfor for example(1600kg) will recover a medium sized 4x4 single line & a large 4x4 double blocked if not bogged severely. If heavily loaded for an outback trip that size winch would struggle to move it at all.
Cheers Craig........
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Reply By: Member - Redbakk (WA) - Thursday, Nov 20, 2008 at 19:45
Thursday, Nov 20, 2008 at 19:45
" I hope to never get myself in that much trouble"
Well I did when on a lonely beach I got too close to a wash out and the troopy went forward, down and on her side....I thought I had lost her to the waves...but as luck would have it the tide was on its way out.
Out with the shovels and exhaust jack....a forward mounted winch was no use to me at all buried in the sand ( she was nose down...rear up...about 4 feet up in the air.
At this point I was wishing I had a tirfor as I could of held her to prevent her from going completely over on her side.
It took many hours of careful digging, jacking to get her level and more digging to be able to have a ramp to drive her out which was a great relief to be able to do....like the Pope....I kissed the ground when she was finally free.
I immediately, on my return to civilization, when to my nearest opposite lock store and bought a tirfor which is now part of my recovery gear and I never go anywhere without it.
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Follow Up By: Member - Mark E (VIC) - Thursday, Nov 20, 2008 at 21:19
Thursday, Nov 20, 2008 at 21:19
Redbakk,
I have a Tirfor which I bought for my last 4WD which had no front mounted electric winch. My current car has a Warn !2,000k winch, but I have kept the old Tirfor for those trips when I'm away by myself and may get into a sticky situation. It goes in the drawer.
They are heavy items to lug around, but I'd rather have it than not....
Cheers,
Mark
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Reply By: Member - Stuart W (NSW) - Thursday, Nov 20, 2008 at 20:47
Thursday, Nov 20, 2008 at 20:47
My father explained this to me as, you will only have to pull the rolling resistance of the vehicle. That is most of the weight is going down through the tyres and even pulling against the worst obstacles you will not have to pull the entire dead weight of the vehicle. Dad was in charge of a recovery platoon in the Royal Australian Electrical & Mechanical Engineers (RAEME)
Stuart.
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Follow Up By: Crackles - Thursday, Nov 20, 2008 at 23:21
Thursday, Nov 20, 2008 at 23:21
Unless one has bald tyres it's very rare that a 4x4 ever gets stuck in a position where "you will only have to pull the rolling resistance". Situations like steep hills, deep mud, rock ledges, snow or diffs dragging on ruts can all see strains on the cable up to & even
well over the dead weight of the vehicle. That's why 5 minutes on a shovel or a jack to minimise the drag can often be more benificial than having the biggest winch.
Cheers Craig.........
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Follow Up By: Member - Stuart W (NSW) - Thursday, Nov 20, 2008 at 23:27
Thursday, Nov 20, 2008 at 23:27
The rolling resistance will obviously vary as per conditions but are you sure that it would exceed dead weight.
Stuart.
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Follow Up By: Member - Kiwi Kia - Friday, Nov 21, 2008 at 07:01
Friday, Nov 21, 2008 at 07:01
If you ar bogged down to the chassis raills then yes.
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Follow Up By: Crackles - Friday, Nov 21, 2008 at 17:13
Friday, Nov 21, 2008 at 17:13
"are you sure that it would exceed dead weight"
Can never be 100% sure without a Dynamometer to measure the exact pull but when the shear pin snaps on a PTO winch or an electric winch stalls when double blocked it's a pretty good indicator there's more weight than just the car involved.
Cheers Craig...............
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Reply By: Kirk and Jeanette - Friday, Nov 21, 2008 at 20:37
Friday, Nov 21, 2008 at 20:37
Thanks for the
feedback all you guys. Not completely sure that answers my question. Yes the weight of the vehicle when bogged in mud with the suction effect etc could exceed the dead weight of the vehicle. That is why I am asking if the capacity of the hand winch rated at about 2400kg would be enough. I am fit and prepared to use the Tirfor or whatever. I built a pole
home some years ago using a Tirfor to lift the poles some up to 11 metres in length so I know what work is involved. The thing is I don't have a roo bar mounted unit and can't justify buying a whole new roo bar and winch. The hand winch I hope never to have to use but if I do need it then I would like to feel that I would have half a chance to recover the old Nissan.
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