3-Point Hitch 3-Point Question

[clee4020]

Hate to be the "safety police", but it's worth mentioning again the blindingly obvous danger of jumping on or manually pushing down on the auger to add downforce. Watched a guy do that once in frustration before anyone could stop him. Thankfully he got away with it... at least that time, but one slip puts you in the auger.

I welded a piece of pipe to our phd so you can put your weight out past the auger

 

[OVRxNxOUT]

OVRxNxOUT how is top n tilt going to help on a post hole digger

It wont help. What I was saying is that the only option available for down pressure on the 3point is Kubota's Top N Tilt. I believe I did mention at the end of my paragraph that this isn't a practical fix for this situation.

 

[sea2summit]

It wont help. What I was saying is that the only option available for down pressure on the 3point is Kubota's Top N Tilt. I believe I did mention at the end of my paragraph that this isn't a practical fix for this situation.

I'm still confused, how would a top n tilt apply down pressure?

 

[xring100]

The new John deere 4 and possibly 3 series offer a factory downforce kit .

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[CDN Farm Boy]

I'm still confused, how would a top n tilt apply down pressure?

It doesn't.

 

[Fallon]

I'm still confused, how would a top n tilt apply down pressure?

I rebuilt my PHD to fit on my quick hitch & it now requires a hydraulic toplink for 50% of the depth. I get down pressure for that 50% though. Its not a normal PHD by any means though.



In a normal setup you remove the toplink & attach the but of the PHD frame where the toplink would go. So ya, I don't understand how a toplink would even be usable, much less provide down pressure.

The down pressure kits attach to the arch on the PHD & use leverage to put some pressure on the boom. Require a single acting cylinder & good pressure relief valve with a dedicated drain to tank (the QD on your double acting valve won't work). Not a hydraulic toplink by a long shot.

 

[MtnViewRanch]

Here, is a Land Pride down pressure cylinder on a Land Pride PD35.

Having a hydraulic side link is extremely useful getting the auger plumb when drilling on a bit of a side slope.

As far as a hydraulic top link, worthless, as has been said, the top link of a 3pt hitch is removed when using a std type 3pt PHD.

 

[JWR]

MtnView -- That first picture you posted speaks volumes of hard to describe mechanical configurations. It also points out some interesting features: Located as it is, that PHD mounted cylinder will only force the auger downward IF the top link and that cylinder are "bowed downward" at their common pivot point. If the common pivot point of the top link connection to the PHD is above the hydraulic cylinder it will not force the auger downward but will instead raise the whole PHD and tractor lift arms. By any chance is the black connection frame mounted on the Landpride PHD designed such that the common pivot point cannot be higher than the level line of the cylinder ?

 

[MtnViewRanch]

MtnView -- That first picture you posted speaks volumes of hard to describe mechanical configurations. It also points out some interesting features: Located as it is, that PHD mounted cylinder will only force the auger downward IF the top link and that cylinder are "bowed downward" at their common pivot point. If the common pivot point of the top link connection to the PHD is above the hydraulic cylinder it will not force the auger downward but will instead raise the whole PHD and tractor lift arms. By any chance is the black connection frame mounted on the Landpride PHD designed such that the common pivot point cannot be higher than the level line of the cylinder ?

All I know is that it works from ground level on down. I have a lot of decomposed granite that I have to drill through. It can be so hard that I have had water sit in shallow holes for days, which is why I ended up getting the down pressure kit. With the DP kit, I have not had ANY hole take more than about 2 minutes to drill. Never have used water again. That is typically down to a full 48" depth at an idle using up to a 24" auger. Down 12", up 6", down 12, up 6" etc. So exactly how it works I never really paid attention, just that it does and without ANY problems. :thumbsup::thumbsup:

 

[CDN Farm Boy]

MtnView -- That first picture you posted speaks volumes of hard to describe mechanical configurations. It also points out some interesting features: Located as it is, that PHD mounted cylinder will only force the auger downward IF the top link and that cylinder are "bowed downward" at their common pivot point. If the common pivot point of the top link connection to the PHD is above the hydraulic cylinder it will not force the auger downward but will instead raise the whole PHD and tractor lift arms. By any chance is the black connection frame mounted on the Landpride PHD designed such that the common pivot point cannot be higher than the level line of the cylinder ?

Either I don't follow your description or disagree with you. I think it's actually a very simple system and surprised it's not more common.

I'm not sure what you mean by "common connection point" For there to be a connection point, that automatically makes 2 components. For there to be a "common" one, to me that means that there would have to be 3 or more components joining at the same spot or in the same plane and I don't see where that happens. I'm also not sure what you are referring to as the "top link" There is no conventional top link in any of the pics.

In MtnView's second pic, the main boom of the PHD and the lower 'arch' are roughly perpendicular to each other. In the 3rd pic, they are roughly 45/135, deg depending on which side you eyeball the angle. The way I see it, the black cyl applies it's force to try to move the boom vs arch closer to perpendicular with nothing to do with what angle anything is relative to any of the tractor side mounts I don't see the application of force from the DP kit being any different than trying to open a pair of scissors with your hand, neither your hand nor the scissors care what angle your arm is at.

Look at it a different way. Leave the PHD hanging on the rack and only hook up the hyd hose. Cycle the valve and the relationship between the boom/arch will change. That is the same way the force is applied when it is mounted. No tractor mounting required