single line pull

What died the winch or the batteries went flat. Did you have to motor running ?

Tell you what though, i'll be looking for some synthetic rope, not fun looking up, while the car issitting on a winch cable

Conman,
Without taking friction into account, it amounts to a pull of approx 2500 lbs. A 9000 lb winch should be capable of this.
Jon W

This may be a silly question - but did you read the manual? The winch should only be run for a very short time (usually less than 1 minute), and then given down time, before repeating the cycle. Most people don't do this, and wonder why it doesn't work well. Read the manual, and let us know what it says! - Jo

con

It also depends on how much of the cable you had wound out. A winch will pull more easily if there are less winds left on the drum (think of it as lower gearing). If you have a nearly full drum it's much harder work for the winch.

Secondly - what sort of battery are you using to run the winch? Lots of people I know have had accessory places wire their winch (without consultation) to an auxilliary battery in a dual battery setup - only to find that they have specified a deep-cycle which is also used to power the fridge, radio and lights.

Not good. Use a cranking battery. The bigger the better. The newer the better.

Cheers
Chris

What brand winch is it ? sounds like the winch was shorting out , or the battery was totally stuffed. This is why I hate dual battery systems , I have 2 batteries connected in Parallel and one has a isolation terminal for overnight stays

Of course the winch should pull it, but you need to do it in short bursts with a rest time inbetween, otherwise you will cook the winch and kill your battery - read the manual!! - Jo

The 'use' time should be strictly adhered to because modern vehicles with electronic voltage regualtors and high output alternators will once the battery is 'flat' attempt to drive the winch with the alternator.
The alternator cannot sustain full output (or greater) for very long before suffering meltdown.
Most winches especially low mounts with poor airflow around the motor will only provide a couple of minutes winching before they are too hot to function.
Some winches fitted with thermal overload switches will still burn out so the thermal switch cannot be relied upon.
Also winches need regular servicing especially electrical connections should be removed, cleaned and replaced regularly.

It's been my experience that No, that form of recovery is asking too much from an electric winch. In all but the most simplest, flat ground pull, always use a block or perhaps two blocks. You will have 9000lb pull only on the bare drum. By the time the first layer has wound on, you are back to about 8200lb, by the third layer it's more like 7000lb and it gets worst. This is also for a winch and battery in 100% tip top condition, and even so you have about 3 minutes of winch pull before the battery cannot maintain current. A 35 degree slope is very steep, a gradient where you should allow the full weight of the vehicle in your mental calculations, in this case 2 tonne. Plus the resistance due to the surface and if it's mud then add another 1 tonne. If you have let the tyres down for traction, this extra load equates to about another half tonne. Add all that up, and 20% for contingencies and you will see you really had a load of around 4000tonne (8800lb) or virtually right on your THEORETICAL limit. But due to the less-than=perfect electrical system, you are pushing the boundarys. I think you found that out anyhow.

Once your batteries get below 12volts your winch doesn't work aswell, the solinods need the full 12 volts or above otherwise you start cooking the winch motor, like the others have said, short bursts of winching is best .
I think the winch could use upto 300 amps while winching therefor your 70 amp hour battery won't last long, After the first 2 metres of winching your battery has only 11.9 volts left unless you use an optima battery or simalar.
I reckon the old hydraulic winches are the only wat to go

That's why I bought a Tirfor. Batteries don't run out, just my energy which recovers over time. More importantly the car will still start as the battery isn't flat....

I've pulled out a Landrover 110 stuck up to its axles in mud with a Tirfor. Great workout!

Conman
Brief answer is yes - if battery, cabling etc is adequate. But you may need to let it cool off a few times. Probable available pull is 3000 kg at mid-drum and 2500 kg max. Required pull (if not also bogged) about 1000 - 1250 kg.

You can also use a snatch block to double the available pull. But energy consumed remains about the same (actually a bit more through friction losses). Current is halved, time is doubled.
Trust this helps
Collyn Rivers