Re: Finished the Boom, Forks and Hitch Pictures

Posted by T_Bone on November 19, 2004 at 04:40:14 from (4.240.39.86):

In Reply to: Finished the Boom, Forks and Hitch Pictures posted by Willy-N on November 18, 2004 at 15:02:13:

Hi Willy,

I appears your about 7ft from the shackle to the point that the boom attachs to the forks.

This would be calculated as a first class lever and with a 3000lb load there would be 21,000lbs applied at the boom/fork joint.
3000lbs x 7 = 21,000lbs

The boom and pendant bracing would also be carrying the full 21,000lbs in compression and shear.

It also appears your close to 3ft from the forks to the hanger attachments on the tractor so then you would have 30,000lbs at this point on the tractor or 10,000lbs for each of the three attachment points on the tractor if the load distributed evenly between all three points, but it doesn't. The top link carry's the weight in shear with the side stabilizers carrying in compression.

Are you real sure the tractor is designed to take this type weight at the attachment points?

I just pointing out some simple math that may save you from getting hurt down the road when the boom and attachment points fail.

To get a better prespective on what I'm saying lets look at a typical backhoe boom.

A typical full 24" bucket carry's approx. 320/lbs of earth and will have a boom size of 6" wide x 14" deep of a tubular design. Thats with a approx 9ft boom reach.

So were talking about 2900lbs at the boom attachment point at the stabilizers.

The stabilizers (out riggers) remove alot of the 2900lbs of load applied to the tractor backhoe attachment points.

Anyone that has ran a backhoe will agree, you never walk (travel) with load weight on the boom as you will quickly tear the boom up.

From that do you really think your 2" x 2" tube boom will carry 3000lbs ?

T_Bone

Follow Ups:

• Re: Finished the Boom, Forks and Hitch Pictures Willy-N T-Bone 08:10:07 11/19/04 (0)
• Re: Finished the Boom, Forks and Hitch Pictures Willy-N 07:00:20 11/19/04 (0)

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