Quick Hitches Does Quick Hitches Compromise Lift Capacity?

[LD1]

:thumbsup:Yes./\

From your description the lift numbers will be wrong with a std 3pt type QH, but correct for Pats QH. The preservation of the articulation points of the //ogram linkage in the former is the reason it will give superior lift. The lift loss with a std QH would be around 10% more than the weight of the QH. [There are a couple threads that have dealt with this in the past year or two.] ... Your front/ back balance concept is sound however.
larry

You posted while I was in the middle of typing my reply, so I guess you beat me to it:confused2:

I was just getting ready to drop you a PM bacause I was afraid I might need a little back-up. glad you are here

 

[SixHoeBob]

My thinking is that quick hitches are wrong. Real farmers and tractor operators know how to easily attach cat. 0, 1, 2 implements, without the need for a crutch. I.e. a quick hitch. The quick hitch is going to downgrade the performance of the tractor/implement setup. A buddy I know, bought an L4200 and a Q.H. Before long the Q.H. was discarded, Another ~$300 wasted.
Quick hitches were designed for cat. 3,4, and 5 size implements,

This ought to ruffle some feathers....

 

[SPYDERLK]

You posted while I was in the middle of typing my reply, so I guess you beat me to it:confused2:

I was just getting ready to drop you a PM bacause I was afraid I might need a little back-up. glad you are here

Yeah. It was hard to get it thru that 1st time. But now that its on the forum we dont have to start from scratch. Just search it and attach a link. "//ogram" will find it well I think. ... http://www.tractorbynet.com/forums/...s/145738-conversion-factor-3-point-hitch.html
:thumbsup:
larry

 

[LD1]

Yeah. It was hard to get it thru that 1st time. But now that its on the forum we dont have to start from scratch. Just search it and attach a link. "//ogram" will find it well I think. ... http://www.tractorbynet.com/forums/...s/145738-conversion-factor-3-point-hitch.html
:thumbsup:
larry

That works for me:thumbsup:

Time for some sleep now:confused2:

 

[JB4310]

Wrong, wrong, and more wrong.

The 3PH is not a simple lever. And thus the calculations and rotation about the moment cannot be used.

Disclaimer: the 3PH calculations do NOT account for front end weight. It is assumed that you will have enough weight up there and that the components are strong enough to take the load.

That said, the 3PH can be adjusted in many ways with the toplink. Either by its length or its mounting position.

But if your particular tractor lets you mount it to for a perfect parallelogram, there will be NO loss in lift capacity at ANY distance rerward. (again, not accounting for front ballast or strength of components).

All tractors are different though. So how far they deviate from a true //ogram will affect the outcome. The farther from // they are, the greater reduction in capacity. But still not as much reduction as just trying to use a simple lever formula.

Rest assured that what I am saying here is accurate. We have been down this road (myself and spyderlk) before here on TBN. There is a few other threads where this is discussed to death at length.

I don't know if I should be glad or sad that I missed out on those discussions :laughing:

But I will take your word for it for now, especially since I never even heard some of those words you guys are using before, let alone know what they mean.

Just seems a no brainer that moving weight away from the point were it is lifted would excert greater force on the lift point, reducing the amount of weight that could be lifted.

I got enough to worry about with the end of the world and all, to worry about my 3 pt hitch or a parallelogram moment
What the heck is a moment anyway?

JB

 

[eastexan]

A couple years ago, I used my Ford 3000 to move my implements about 300' to another location on my property, and thought the simplest thing would be to use the boom pole.

I didn't have a problem until I picked up the Bushog cutter. I had no steering since the front end of the tractor just wanted to rare up and skim along the top of the ground. So I kept the load low until I was able to hook the chain to the middle eye of the boom. Then there was no problem after that.

Since then, I got to wondering that if I hadn't used the QH maybe there would have been just enough weight reduction to have made it without having to stop and rehook.

It was no big deal, since I could have either put some weight on the front or else just hooked it to the 3ph. But it made me curious as to what effect that 4" difference woud make.

Thanks everyone. :thumbsup:

 

[SixHoeBob]

Moment - Tendency of a force to rotate an object about an axis.

An example would be a hydraulic cylinder used to dump and curl a loader bucket. The cylinder is the moment force. The distance between the bucket pins is the moment arm. The lower bucket pins are the axis of rotation. The object subject to the moment force is the bucket and the load in the bucket.

The moment is the force exerted by the cylinder.

(Area of the cylinder piston x the hydraulic pressure exerted against the piston = the moment).

 

[JB4310]

My thinking is that quick hitches are wrong. Real farmers and tractor operators know how to easily attach cat. 0, 1, 2 implements, without the need for a crutch. I.e. a quick hitch. The quick hitch is going to downgrade the performance of the tractor/implement setup. A buddy I know, bought an L4200 and a Q.H. Before long the Q.H. was discarded, Another ~$300 wasted.
Quick hitches were designed for cat. 3,4, and 5 size implements,

This ought to ruffle some feathers....

Ya ruffled mine, I ain't giving up my QH. And definitely no money wasted

I always thought for HD constant ground contact implement use, a QH wouldn't be the best way to go, But I guess what your saying is they're more suited to the big stuff.

JB.

 

[eastexan]

Yeah. It was hard to get it thru that 1st time. But now that its on the forum we dont have to start from scratch. Just search it and attach a link. "//ogram" will find it well I think. ... http://www.tractorbynet.com/forums/...s/145738-conversion-factor-3-point-hitch.html
:thumbsup:
larry

Wow! Several of you guys posted before I got my reply typed out. :confused2:
I hadn't seen that point being discussed here before, even after using a search.
I'll read that thread. But what you all are saying about "moments", etc., just flies right over my head. :laughing:

Thanks for the link.

 

[JB4310]

I got a challenge for you guys.

Lady GaGa is going to be on the season finale of SNL tonight, come up with a formula that figures her, it, that out. :laughing:

JB.