Loader FEL capacity with a boom

[LD1]

I find the max lifting capacity of my B26 with LA364 loader is pretty close to the tipping weight. That can sometimes be your real limitation.

Real lifting capacity is a constant.

Tipping weight is variable. It all depends on how much ballast you use.

There is a BIG difference in tipping weight between nothing, a light blade, or a heavy bushhog or backhoe.

The tipping weight with nothing and no filled tires is probabally only 10% of what the hydraulics are actually capable of lifting with proper ballast. And UNLESS you can lift until the relief valve opens and the rear tires are still planted, you do NOT have sufficient ballast.

 

[Leejohn]

I have made a few boom poles, can't seem to understand how you guys are lifting as much weight as you say. I tell you at 7 or 8 ft out it hasn't been a lot. I have never got near as much as some of you are saying.
Loading some pictures of my boom and what I did today with it. I do this 3 or 4 times a year just because I don't have a overhead anymore, and it can't be done with a cheerpicker. And I can tell you a big block is all you want with the ex manafolds on it with a 40 hp tractor and you had better not turn until the engine is down. The engine today is a 350 block, but keep in mind the manifolds weigh close to what the engine does.
I do this by myself and alot of up and down from the tractor. As you see my boom goes in and out. I keep it in when I'm R & R a engine because I want all the control I can get. Slow and easy!!!!

 

[LD1]

I have made a few boom poles, can't seem to understand how you guys are lifting as much weight as you say. I tell you at 7 or 8 ft out it hasn't been a lot. I have never got near as much as some of you are saying.
Loading some pictures of my boom and what I did today with it. I do this 3 or 4 times a year just because I don't have a overhead anymore, and it can't be done with a cheerpicker. And I can tell you a big block is all you want with the ex manafolds on it with a 40 hp tractor and you had better not turn until the engine is down. The engine today is a 350 block, but keep in mind the manifolds weigh close to what the engine does.
I do this by myself and alot of up and down from the tractor. As you see my boom goes in and out. I keep it in when I'm R & R a engine because I want all the control I can get. Slow and easy!!!!

So...Are you saying you had trouble lifting it, or.....you had trouble keeping the rear tires planted???

I dont know what you have for ballast out back, but it didnt look like much. On a tractor your size, you shoud have ~1500lbs MINIMUM to make full use of your FEL, which has a lift capacity @ the pins of ~2500lbs. And by looking at the pics, I would say with the length of that boom, you will still have about 1/2 or that at the end of the boom. So...~1250lbs

How much do you think that engine weighs??? A SBC is between 500-600lbs, depending on iron or aluminum heads and intake. So IF you are saying that the manifolds weigh that much as well, 600+600=1200lbs. Whats their to complain about:confused2:

 

[Leejohn]

LD1
( Whats their to complain about) I wasn't complaining about anything, just saying I could never lift a lot of weight with a long boom pole. The tractor does good with the weight on the back and loaded tires.
Like I said I don't know the weight of the 350 block. The big think is, I have to get them so high to clear the boats. Sure gets hairy sometimes.

 

[LD1]

I have made a few boom poles, can't seem to understand how you guys are lifting as much weight as you say.

It sure sounded like you were complaining. Not understanding how we can lift the weight we claim we can with a boom pole.

I just pointed out the numbers and calculations JUST like I used earlier in this thread. And it seems you are able to lift the amount of weight I calculated you can. Let me explain....

It appears your pivot pin is right almost exactally at the midpoint between the end of your boom, and where the cylinder is applying the force.

Thus, you would have ~1/2 of the pin rating avaliable at the end of the boom. Since your tractor is rated @ 2500@ them pins, that gives you 1250 at the boom.

If that same boom were on the tractor that started this thread, he has a lift of 1100@ the pins. So his boom lift would be ~550.

I guess I dont get what you "cant seem to understand".

 

[Leejohn]

This is what it has listed for my loader. I think I'm starting to understand it now after what you just posted. The pivot pin was getting me. How long of a pole could I make before I get 0 lift? That is if everthing is right on the tractor side. I have no ideal how to calculate it. After I understood the pivot point then the other 2 # below made sense.

Lift capacity (pivot pin) 1129 lbs.
Lift capacity (bucket bottom mid point) 1874 lbs.
Lift capacity (19.7 in forward) 2509 lbs.

 

[IslandTractor]

This is what it has listed for my loader. I think I'm starting to understand it now after what you just posted. The pivot pin was getting me. How long of a pole could I make before I get 0 lift? That is if everthing is right on the tractor side. I have no ideal how to calculate it. After I understood the pivot point then the other 2 # below made sense.

Lift capacity (pivot pin) 1129 lbs.
Lift capacity (bucket bottom mid point) 1874 lbs.
Lift capacity (19.7 in forward) 2509 lbs.

something is backwards. Pivot pin capacity is ALWAYS higher than mid bucket or 20 inches forward (usually same as mid bucket).

It might make sense if these figures are reversed and the bucket is a long one but something is wrong with those figures.

zero lift would occur when the weight of the pole and distance from pivot pins equaled capacity at that distance. The longer the pole the less the capacity but to give you a precise answer you'd need to know the weight of the pole itself. There is a practical reason why boom poles are typically 4-8 feet long although special poles for lifting relatively light material can make sense.

 

[Leejohn]

This came off the spec. for my loader. Now you can see how I couldn't understand it. Everything you are saying makes sense.

 

[LD1]

This came off the spec. for my loader. Now you can see how I couldn't understand it. Everything you are saying makes sense.

Here are the specs Products: LA854 Kubota Canada Ltd.

You had them backwards, and I am still not sure where you came up with the 1100lbs at.

Because on your loader, the "bucket bottom mid point" and the "19.7"forward" are roughly the same:thumbsup:

 

[whiskywizard]

Based on the good advice received here, I reduced the overall length of the boom. The little CK20 has limits.

The distance from the pins to the end of the boom is under 60". I've attached a few photos, but I'm not finished yet. I need to pick up some hooks and finish the welding. I'll test it before I clean it up and paint it.

I've also attached a picture of the trailer hitch I whipped up. I'm not an experienced welder, and I've got the cheapest welding equipment possible. With that in mind, I'd welcome advice from those who have better welding skills.