mat2495 Posted January 17, 2012 Share Posted January 17, 2012 Evening all, Has anyone ever run a PTO (for a winch) with an automatic gearbox? any pitfalls or problems? I'm just trying to get my head around how it would work out. Thanks, Matt Quote Link to comment Share on other sites More sharing options...
dirtydiesel Posted January 17, 2012 Share Posted January 17, 2012 I do, i've previously ran my h14 with a manual i now use an auto. The winch is now very different animal. With the manual you can let the engine idle in gear and it will retrieve cable, with the auto you have to have some revs on otherwise any load on the winch slips out the torque converter at idle. This means i am pulling harder and faster than perhaps i'd want to be. Also it's easier to pause winching on the manual by dipping the clutch, on the auto you have to select neutral this somehow seems to take longer and require more "thought". Another little annoyance is, selecting neutral in the transfer case is awkward with the auto especially after the 30th time in a day. It does pull very well on the auto though and i really like the way the gearbox will change up a gear when the load come off the cable. Quote Link to comment Share on other sites More sharing options...
greenstream Posted January 18, 2012 Share Posted January 18, 2012 Hi DD What do you do when you have to stop winching on a steep hill ? How do you stay there, does the winch have enough brakepower ? Morten Quote Link to comment Share on other sites More sharing options...
GBMUD Posted January 18, 2012 Share Posted January 18, 2012 PTO driven winches generally have a worm and wheel type gearbox and so will not allow pull on the drum to reverse the geartrain. Chris Quote Link to comment Share on other sites More sharing options...
oddballrovers Posted January 18, 2012 Share Posted January 18, 2012 Howdy. Not all mech winches have that, our König winch with worm 1:6 ratio can be pulled out by hand if pto is not engaged or main box is in neutral, but I guess that 1:36 wich is more normal will have sifficient brake power. Now if you look at the Viking winch Soren at his friends have just finished there ar not brake power at all in neutral, but I can imagine they are already working on that. Ole. Quote Link to comment Share on other sites More sharing options...
Mr Ian Posted January 18, 2012 Share Posted January 18, 2012 Hi the only concern I would have is the heat being generated by a constantly slipping Torque Converter, and as the vehicle is stationary (well almost) little cooling flow, you may need to beef up the oil cooler??.or fit a fan assisted cooler. Regards Ian Ashcroft Quote Link to comment Share on other sites More sharing options...
mat2495 Posted January 18, 2012 Author Share Posted January 18, 2012 Thanks for the help guys, I certainly hadn't considered the extra awkwardness of taking the transfer box in and out of neutral. What is the best option for an oil cooler for the box? do people still use the standard ones, or run a pair, or is their a decent aftermarket option? dirtydiesel, when you say that you have to increase the revs or the torque convertor slips, does increasing the revs cause it to change up gears as well as the load from the winch can't be too great, or do you not have to increase it that much? Now I just need to decide whether I should go auto or stick with manual. Quote Link to comment Share on other sites More sharing options...
dirtydiesel Posted January 18, 2012 Share Posted January 18, 2012 Hi the only concern I would have is the heat being generated by a constantly slipping Torque Converter, and as the vehicle is stationary (well almost) little cooling flow, you may need to beef up the oil cooler??.or fit a fan assisted cooler. Regards Ian Ashcroft The torque converter only slips when the engine is at idle with load on the winch, as soon as you pick the revs it takes up drive, I have a 12" square cooler on mine, to keep the box happy. dirtydiesel, when you say that you have to increase the revs or the torque convertor slips, does increasing the revs cause it to change up gears as well as the load from the winch can't be too great, or do you not have to increase it that much. I only have to go to around 1200rpm, when there is load on the cable ie; recovering someone it will stay in first but if they gain traction and the weight comes off the cable the auto will change up as the load comes off, then back down again when the load come back on. I find the effect similar to a cvt Quote Link to comment Share on other sites More sharing options...
Mr Ian Posted January 18, 2012 Share Posted January 18, 2012 HI The Torque converter slips until lock up occurs, not talking about stall speed, I mean TC clutch lock up, this is never in 1st or 2nd, can lock in 3rd on a Disco II , but normally only in 4th. hence the heating problem. Regards Ian Ashcroft Quote Link to comment Share on other sites More sharing options...
dirtydiesel Posted January 18, 2012 Share Posted January 18, 2012 Hi DDWhat do you do when you have to stop winching on a steep hill ? How do you stay there, does the winch have enough brakepower ? Morten Just select neutral, the gearset in the superwinch h14 are whats called "self locking" this is due to the lead angle of the gearset and the (relatively) high ratio. The over run on my from full throttle to neutral is less than half a drum rotation, at ordinary winching speeds the drum stops instantly. The worm and wheel are geared 39:1 in a h14. Quote Link to comment Share on other sites More sharing options...
oddballrovers Posted January 19, 2012 Share Posted January 19, 2012 Howdy. Not all mech winches have that, our König winch with worm 1:6 ratio can be pulled out by hand if pto is not engaged or main box is in neutral, but I guess that 1:36 wich is more normal will have sifficient brake power. Now if you look at the Viking winch Soren at his friends have just finished there ar not brake power at all in neutral, but I can imagine they are already working on that. Ole. I have to correct myself it is not 1:6 but 1:9 sorry Ole Quote Link to comment Share on other sites More sharing options...
Daan Posted January 19, 2012 Share Posted January 19, 2012 If you drive assist, you only need to touch the vehicle brake and the winch will brake automatically as well, because there is a connection between the wheels and the winch. Daan Quote Link to comment Share on other sites More sharing options...
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