I am currently running the painfully slow ZF74 snail pace set up!!!!!! And am looking for a direct drive system via dog clutch. I am therefore after some pointers, telephone numbers, web sites etc etc!!!!!!!!!

Please help as I was overtaken by a slug during last weekends Challenge Southwest Event whilst winching to a punch, and it beat me in the final scores!!!!!!!

All the best

Ian.H

Alfred Murray is your man then

The MileMarker is an exellent bit of kit, but let down dreadfully IMHO by the ZF - Slow as a Slow thing System.

However, when thats all said and done it does make the system more affordable to buy than nothing, or a cheap chinese winch-junk option.

To up its speed you'll need

A Hydraulic Fluid Tank
A Spool Valve (a 'lever' for In Neural Out - this has all the pipework in and out of it))
A Over Centre Valve (safety cut off)
1/2 inch BSP Hydraulic braided hoses (the MM stuff is too restrictive)
A PTO Pump ( I use a Superwinch H14W Pump and Tank)
Proper Hydraulic Oil (EP32 in my case)
A System Filter
A High Pressure Motor (the std one on the MM blows up if you give it all of the above - ask me <cough> how I know )

I have a rear MM.... PTO from H14W Tank from the same H14W system which has a built in filter)
...spoolblock from Steerforth (twin unit controls front and rear winches off the same system) 1/2 Hosework and it gives me about 75 ft a minute in 4th gear at about 2000 RPM

Have a read also of ian (Bull Bar Cowboys) write up on a fast hydro unit

HTH

Nige

There's a wealth of good info on here for PTO Milemarkers - but don't underestimate the benefits of a very slow winch. When your mate has a "braking moment" on the motorway and the car behind decides to rearrange the back of his car, you wouldn't want an 8274 if you were realigning his boot striker plate with millimeter precision:

Old Spot is selling Coupling's to suit 200/300 Tdi Crankshafts > Hydro pumps. If you can't get hold of him on here let me know and i'll chase him for you.

Mike

A PTO-pump is one way to up the speed.
Another way is to replace the ZF74 with a bigger belt-driven pump. I am using a Cassapa which gives up to 85l/min.
Considering a ZF74 only gives 10-13l/min, there's plenty of room for improvement without going to extreme (i.e. needing to many modifications). IIRC, standaard MM winches are suitabel for pumps up to 35l/min, as used in some PTO-setups.

The Std MM Motors can't take too much flow, they were designed to match as close as possible the ZF dynamics - but what really kills the Std MM Motor is the pressure.

The std system often never gets up to the max pressure for long that the system says it does, this is complex but is related to the flow speeds, the reasons the pipes are so much smaller on a ZF System (and eqaully why the reverse for a PTO System - you need bigger) is the smaller pipework coupled with low flow helps get the pressures down and match motor and pump.

A properly set up PTO will flow as said above MORE than ZF and 85 LPM is a lot more, but then the pressures will jump, to bring the pressures down bigger bore helps, and bigger bore pipes also help in the flow being more than small pipe

There is only so much flow you can shove through a small pipe without the pressure going up if you flow too much for the pipe size, 1/2 BSP and a 30LPM Pump can sees huge speeds from a MM, for slow stuff even with set up 1st gear and 500 rpm will give that too

Probably not the best explaination of flow vs bore vs presure but simple for what is a nightmare area of interrelated complexities

Nige

erm..

Look Jez

Its early and I've got sinusitis (or however its spelt )




Anyway,................ wot you doing up this early ?

they made me go to work, thats twice this year. I want to go back to the argon rich atmosphere of the lab.

Nige mate, you need coffee - then re-read that post and edit it before anyone else spots it

Thanks for the responses, I omitted to say that I am looking for a crank driven system... Sorry.

Tony - I think the only system that Alfred Murray does is the chain drive which scares the heck out of me!!

John - I totally agree that the ability to control speed is of great importance, especially with my ability to contact even the largest of trees which seem to jump out at me, ..................... but being beaten by a SLUG!!!!!!!!

Mike - I have tried to contact Old Spot as I had heard something along these lines but had no response so if you could give him a prod with a large piece of 4"x2" I would be most great full, do you know any details of what he is putting together??

Escape - Are you running that with any type of clutch set up??? Pickies and more detail would be very interesting!!!!

Nige - What would the optimum size of pipe work be therefore to run the standard motor, which ever route of drive I take???

Once again thanks, keep it coming,

Ian

Erm No Idea !

The std Motor on the MM is very limted,
I did have the specs for it, but bineed them along with the cracked casing when I changed it for a HP Version

The MM Itself it rated to around 1800 PSI, but can be run higher esp at peak
the Std motor to a lot less, the motor I have now is good for peak 2300 PSI,
I think the old std peak was around 1300 psi ?


As to your question above............. have had another think ..........and still have no idea
But the motor does match to the ZF system so thats maybe your answer if you don't change the motor for a HP one ?

Nige

Ian is after a pump drive the same as Old Spots (as indeed am I- when the money tree bears fruit!)

Basically a 27 or 30 cc/rev Hydraulic pump directly driven from the front end of the crank via a dog clutch- There was lots of talk on here some time ago about people who were going to have them on the shelf as a bolt on package, including a fabricated mounting, but none seem to have appeared... sounds like Old Spot may have done so??

Ians is a standard 200Tdi Defender engine in a 90 (of a somewhat 'happy' colour )

We were indeed overtaken by an asthmatic slug at the last CSW event... made it easier for me as his winch bitch though!!

Oldspot can now supply a machined coupling to drive a pump from the tdi (200 and 300) crank pulley.
I have just ordered one for my 300 - but you do need enough space in front of the pulley - around 11".
A mechanical dog clutch to mate to the coupling and a pump to mate to the clutch can be bought from any hydraulics supplier.
A substantial bracket to mount this lot must be home made.

I have no doubt Oldspot will be happy to give advice. PM him.I will suggest he check his messages.

I have the chain driven type r set up on my 90, i don't want to tempt fate but it has proved reliable so far!

Do you happen to know how much he is after for just the coupling? (also any pitures of just the coupling?) Also has he any plans to knock up a few mountings as well???

Cheers for the replies guys- Ian H is away for the weekend

Hopefully I will have 10 of the 200tdi couplings by next week end, they fit into the cast iron discovery pulleys and come with any standard sized bush for a pump or dog clutch. PM me if you are interested. I am working on the 300tdi version for jericos truck and hope to have it done in the next few weeks.


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Hi Old Spot- excellent thank you. Will get Ian to contact you.

Technically speaking, I'm not running it yet...
Something always seems to come up, either complications regarding the install or other more urgent work to be done.
The setup does include an electromagnetic clutch, for in cab control and the ability to turn the pump on without having to stop the engine (as with a dog clutch).
The pump is a 27cc one, with a speed limit of 3200 rpm, giving me a flow of 20 to 85 lpm.
It needs to be up and running by the end of the month, I'll be sure to post some pics when it is.

BTW, piping is 1/2" with a massive 1" feed.

Greetz,

Filip

Jericho -

Thanks for that, any part numbers etc and suppliers that you can recommend???????


V8 90 -

Still a bit scare for me.

Old Spot -

Pm sent


Anymore thoughts from anyone keep it coming please

Cheers

Ian

Thanks for that sounds interesting where did you get the pump from? Look forward to the pics.

Cheers

Ian

I got the pump via a mate who sells agro-equipment. But you should be able to get a Casappa from any decnet hydraulics dealer. Far from cheap though, same goes for the clutch and pretty much everything involving hydraulics...

Harrier fluid power have a good online catalogue (pdf file i think) with a suitable group 2 clutch and a range of pumps etc. Here clutches on p 38.

Hydraulics Supermarket in Gloucester will supply your just about anything if you can tell them what you want.

Look in the phone book for your local hydraulic supplier.

If you are really stuck,then Allen byrne from Alfred Murry Ltd. can get all the bits.

All the best. Jerry.

I've used White House Products just outside Glasgow. Very helpful - even came outside to look under the landy and spent 45 mniutes discussing the idea and making suggestions. Ask for Alistair.

Adrian

Adrian

Thanks for that I shall google them, although I doubt I will be able to pop in .... from Devon!!!

Cheers

Ian