J_J
Super Star Member
- Joined
- Sep 6, 2003
- Messages
- 18,952
- Location
- JACKSONVILLE, FL
- Tractor
- Power-Trac 1445, KUBOTA B-9200HST
Deere rates capacity 24" aft of the hitch pins, J_J
Sometimes Kubota quotes both weight limits.
Deere rates capacity 24" aft of the hitch pins, J_J
The levers end at the eyes. The eyes cause articulation of a "4bar linkage". From this articulation point a pseudo //ogram governs the drop in available lift force. If the //ogram were perfect there would be no lessening of force with distance beyond the eyes. Trying to force this system analysis using simple leverage will yield a significant underestimate of lift ability.From the Ops question he knows little about calculating leverage forces, however he has a gut feeling that as the lever arm is longer the lifting capacity is reduced.
What do we know about the problem?
The hitch can lift 2,200 # on a lever arm of 24 inches, and nothing more. We have no information about the dimensions of the parallelogram.
We know nothing about how long of a lever arm the OP intends to use.
While technically correct, there are too many unknowns to solve the problem using a parallelogram.
I chose the best fit, a class 3 levers that will give an estimate of the load that can be lifted.
With all the chit-chat flying about we have no response from ericrm2005 if my solution is acceptable to him.
The levers end at the eyes. The eyes cause articulation of a "4bar linkage". From this articulation point a pseudo //ogram governs the drop in available lift force. If the //ogram were perfect there would be no lessening of force with distance beyond the eyes. Trying to force this system analysis using simple leverage will yield a significant underestimate of lift ability.
larry
thanks for all the posts, tractordata.com has it listed at 2200lbs. that must not be correct. 3500 would eliminate the concerns i had
I was just fixing to check the specs myself as the 2200lb capacity seemed very low to me. The 4x20 series are about 2500 lbs 24" out from link ends.