Outer Limits 4x4 Board

Anyone ever build such a setup ? Pics of setup, technical details, what pump, how much oil and what what winch used ...
I need some more ideas .....

Start with your winch, Warn make good hydraulic winches that most tilt tray guys use. with the specs of your selected winch, you can decide on line speed (this wont drop under load as a electric winch will). This will give you the required oil flow you will need fron the pump.
You can buy a electric clutch/bearinged mount to mount and drive a hydraulic pump, most likelly with 2 'B' belts. You can then 'turn' the pump on and off. A simple solenoid valve, decent oil tank and filter system will get it workin.
You can also drive a pump of your PTO (if equiped) which is a better option long term.

winch is a good starting point.

mile maker make good hyd winches. people will say they are slow, but thats only when they are running off power steering pumps, about 6l/min

you can buy winch only so you don't need all the small plumbing they supply which you won't use.

you will need

winch
pump
hyd fluid tank
filter
control valve
pressure relief valve
hoses and fittings

don't know if you can run a pto driven pump on your nissan?
i'm setting mine up on my defender it will run 70l/m of the transfer case driven pto.

you could look at an engine driven pump or mabe electric driven.

cheers serg

Could you get enough flow to run a hyd winch by tapping into the cooler lines on a auto trans ?

devo wrote:Could you get enough flow to run a hyd winch by tapping into the cooler lines on a auto trans ?

nowhere near enough pressure.

The guys that run hydraulic setups here run 180-200 bar and around 60l/min at 1000 rpm.
The pump is run of the engine via 2 V belts.
There must be an more effecient way to get the power to the pump, we have tried with a timing belt, but that dosent work, it breaks to easily when mud and so on gets in it .... Ideas ?

Hobbz wrote:The guys that run hydraulic setups here run 180-200 bar and around 60l/min at 1000 rpm.
The pump is run of the engine via 2 V belts.
There must be an more effecient way to get the power to the pump, we have tried with a timing belt, but that dosent work, it breaks to easily when mud and so on gets in it .... Ideas ?

PTO

Use your power steering Pp to power the winch.

The old owner of my cruiser used to run a hyd winch and I still have all the hoses on the front of my 4by.
I'll get around to fitting another winch one day

Chucky wrote:Use your power steering Pp to power the winch.

The old owner of my cruiser used to run a hyd winch and I still have all the hoses on the front of my 4by.
I'll get around to fitting another winch one day

doesn;t produce enough flow(line speed) for what these guys are talking about.

hey hobbz,

you would learn alot by looking at:

LR4x4.com Winch discussion 1

and

LR4x4.com MM winch installation

and

LR4x4 guide to getting a ridiculously quick hydraulic winch

pugwash wrote:hey hobbz,
you would learn alot by looking at:
LR4x4.com Winch discussion 1
and
LR4x4.com MM winch installation
and
LR4x4 guide to getting a ridiculously quick hydraulic winch

Ill have a look

PTO isnt really an option ... when you depress the clutch (for some reason) while winching your winch stops ...

go auto or Type- R then which is chain driven off the crank- you even get a one-one pulling ratio then too.

It's also the fastest winch i have EVER seen- at 12,000lb max pull it pulls twice as quickly as an 8274 with no load! (or something stupid like that!)

You could direct drive a pump from the front of the engine, maybe with an air operated dog clutch to engage drive. Direct drive is most efficiant, minimal frictional losses, but may have to watch engine speed and type of pump used. A piston pump will usually allow a higher running speed.

Guys, a mate of mine is setting up a warn hydraulic winch with a Toyota MR2 power steer pump. The pump is divorced, electric(12v) ,so will set up a tank and readily avaliable solenoids to operate the critter

In terms of belts to use, could you try one of the MoFo Harley Davidson toothed belts (engine to gearbox?)

Good idea with a Harley Davidson drive belt

PS pump just isnt big enough .... 65l/min and about 200 bar, that works ! But more wants more

65l/min @ 200bar is a big ask for a belt system, that would be about 35hp to drive. We used Gates toothed belts (HD style but bigger) to drive hydraulic pumps on feedlot trucks. The belts were rated to over 150hp (we were using about 30) and they still broke belts! Main cause was engaging hydraulic system at max engine rpm, shock load then broke the belt.
You will also make a lot of heat with 65l/min of oil = big oil lines (3/4" min), decent size tank (at least 65L) and maybe an oil cooler.

As for running 12 motor connected to hydraulic pump to run winch, you still get the weak link - the 12v motor! It would actually be more efficant to hook 12v motor straight to the winch as per normal. The motor would actually be under more load running a pump than driving a winch at the same speeds.

cass jones has got plans for a new hydraulic winch which will be pto, and blow evrything else out of the water, so he tells me, and will be a tad faster than the selected gear u are in, the 24v set he has on there now is nuthin compared to the new 1 hes gettin. will keep ya posted when i hear more about it.

All the hydraulic tech guys we have talked to says that "our" setup cant work, to little oil, to high pressure ... but fact is that i works really well ! we just wanna go faster
I just dont think PTO is an option ... when you depress the clutch your winch stops ...

quite simply you have the option not to depress the clutch while you are winching

Now that I've sold my truck I'm not building this any more but I have an electic pump that a guy used for hydraulic suspension on his low rider that he used to have for jumping competitions. I was going to set this up instead of an engine run pump. This way you can still winch if your engine stops. It has heaps of pressure but I wasn't sure if it'd have enough volume. I didn't get the chance to try it.

has any body toy'd with the straight cut gear drive setup for a hyd winch before? ya know, a straight cut gear bolted to the harmonic ballncer then and idiler gear then the hydulic pump, no broken belt problems then and 100% drive to the pump no belt slip just would be really noisy

I modified a himount Warn with a hyd drive on the endplate end of the drum. I had a 70 LPM pump with electric clutch so i could switch off when not winching. The system was only used for winching in as the electric still operated for winching out, it was loosly based on the hydrostic principle and had a 3 lt header tank to keep the sytem compact. on testing it would pull 60mtr/min at full load ( about jogging speed ) it was great when winching up a flat track to see how fast it was but try and use it on rock faces, ledge's, side angles and it was not nice.To try and balance the winch, engine speed, gearbox and wheel speed over extrem terrain was too difficult. I now have a 24v on a 6hp and it is great fast and simple. the hispeed hyd would be better with a auto trans but you will spend some big $$$$ setting it up ( i spent over $10000 ) on my set up only to pull it off later but the best idea's on paper or your head do not always work out how you expected. I honestly thought fastest would be best but i was not the case for me im thinking a 2 speed set up with slow for the technical stuff and hispeed for the long hauls !!!!!!!!!!!!!!!!!!

Wally