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Fabricating a 3pt Lift Boom


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#1 MNGB ONLINE  

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Posted December 15, 2014 - 08:53 PM

Hi all, well for the past few days I've been cleaning up in the shop not a fun job and I am making progress but this afternoon decided to fabricate a 3 pt lift boom to use on the Power King. Got it pretty well done will be installing a strengthening rod over the top but don't have any rod in the shop so will do that when I get some, then its to paint it.

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#2 MH81 ONLINE  

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Posted December 15, 2014 - 09:41 PM

Nice project.
The s bend, I assume is for height. How are you panning on supporting it with the rod? Up and over with a block on the top or ?

#3 MNGB ONLINE  

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Posted December 15, 2014 - 09:55 PM

Hi MH81, the S bend is for increased height ( I have a half dozen of these 1"X1" laying around so thought this would be a good use) the plan is to attach the rod at the hook end bridge it at the bend and then attach it at the base, am also thinking of welding a gusset on each side of the S bend.


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#4 ol' stonebreaker OFFLINE  

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Posted December 15, 2014 - 10:57 PM

I'll suggest using some more 1" welded to the hook end and attached to the outer ends of the drawbar w/ flatbar and bolts. This would increase strength both vertically and horizontally.
Mike
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#5 boyscout862 ONLINE  

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Posted December 16, 2014 - 06:47 AM

That is a nice looking fabrication job. I've thought about doing one for my Ford. I am a retired engineer and unfortunately the pictures make me nervous. When designing machines, I always make the frame stronger than the hydraulics so that the machine can't hurt itself, nor anyone. That 1" x 1" tube just makes me nervous, both up and down and sideways. Take a look at the commercial ones and see how they are braced all around. It may lift something okay, but when moving the motion can cause alot of trouble. Please be very carefull. Good Luck, Rick
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#6 Jazz ONLINE  

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Posted December 16, 2014 - 07:16 AM

Great fabrication work, definitely keeping busy for a while on that however I agree with boyscout862 on the long piece of  1" tube stock being the weak link.


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#7 Username OFFLINE  

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Posted December 16, 2014 - 08:52 AM

I agree with other in that it needs more strength especially if you will be traveling with a load on it.Hitting a bump will have it bouncing.This is one idea for adding strength without adding a lot of extra weight.

 

 

 

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#8 KennyP OFFLINE  

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Posted December 16, 2014 - 09:03 AM

Here's the one I built:

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#9 MNGB ONLINE  

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Posted December 16, 2014 - 01:07 PM

Hi all, thanks for the replies and I'm thinking the same as you guys are I need stronger boom material, at first I was just thinking about lifting but when you start moving that's a whole new thing so I'll be looking for stronger boom material. I can call this a working model know how to go about it.;



#10 KennyP OFFLINE  

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Posted December 16, 2014 - 01:14 PM

How long was that boom? Looked to be about 6'! Seems like my boom end is 4' or less from the 3-PT.



#11 glgrumpy ONLINE  

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Posted December 16, 2014 - 05:16 PM

Seems to me that the main beam should go all the  way down to the two 3pt arms, just like a boughten one? then just a good link/brace to the top link mount? or to a top-link end?  I had a purchased one of those once, was the cheaper one at time. Was a 1-1/2" tube or more? and not all that thick. I found it was really quick moving with the controls on the tractor and had to be careful feathering the levers or it would move real fast and drop or jerk the item being picked up. Would think longer one would be even quicker and more dangerous.  I actually bent the main pipe on mine trying to lift something and front of tractor was coming up pretty easy and such. Didn't really think it was even that heavy, but guess was wrong. I would not buy the light one again if ever I did another, yet, I think there are better ways to lift stuff than these poles really.



#12 MNGB ONLINE  

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Posted December 17, 2014 - 06:50 PM

Hi all, well did a total redesign of the 3 pt lift boom, this new design will work it will stand up on the Ford 8N, went with a 1.5" pipe for the boom sleeved it at the pivot, fabed a new draw bar / base out of 2"X1/2" steel as are the diagonal braces, still have to pickup some 5/16" rod to brace the boom, will get that tomorrow and then paint the assy.

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#13 countryboy88 OFFLINE  

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Posted December 19, 2014 - 08:07 PM

I would suggest putting a second loop lower for heaver items, has come in handy on on mine.

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#14 MNGB ONLINE  

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Posted December 19, 2014 - 08:48 PM

Hi all, well the fabricating and welding are complete the boom is in the paint room will paint it orange and black tomorrow and install it Monday morning not sure how much I'll use it but I wanted one so now I have it. Good idea countryboy

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Edited by MNGB, December 19, 2014 - 08:51 PM.

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#15 boyscout862 ONLINE  

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Posted December 21, 2014 - 09:44 AM

That looks awfull long. Anything attached will whip around when you drive over rough ground. It may also be too much leverage for your hydraulics. It could cause a hydraulic blow out. Be carefull. Good Luck, Rick
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