SPYDERLK
Super Star Member
- Joined
- Feb 28, 2006
- Messages
- 10,331
- Location
- VA
- Tractor
- JD2010, Kubota3450,2550, Mahindra 7520 w FEL w Skid Steer QC w/Tilt Tatch, & BH, BX1500
Tim, sorry I somehow missed the last posts on this thread. YES, this arrangement - the one you posted pictures of - loses lift capacity as you move out from the balls. If you were to measure the length of your lift arms (A), and then measure the distance from where the lift arm pivots on the tractor to the "point" on the spears where the weight is being lifted (B), you could have a good idea of what to expect. The lift caacity will be A/B times the lift capacity at the balls. From the pictures Im guessing the fraction A/B is about 1/2. I just had to look back to the 1st to see how heavy those bales are - - I expected about 1Klb which wouldnt have explained it. But 1800 puts it very much into the iffy zone. I imagine your tractor is ok, but while youve got their attention get the mechanic to set your pump relief pressure to to high side of the spec. Springs lose a little bit of their tension during breakin for various reasons. This effect on hydraulic relief pressure is very small unless the seat actually wears. What isnt quite so small is the effect of heat. The spring is a little weaker while warm. The difference in relief pressure may go down 50psi (a percent or 2) in a hot system. This should be allowed for during adjustments made cold. If you can get them to show you where the adjustment is made please let us know.Tim_in_IA said:The bale spear that I am using is an older vermeer with 2 spears. It only attaches to the bottom links and has stops and chains that exert the force against the bottom links. Would this have less capacity than a spear that utilized the top link? I didn't think so before since all the power comes from the bottom links, but if there is a lever action that happens this also might be contributing to the issue.
The 7520 loaner lifted the bales fine with the attachment but it has a rating almost 1000lbs higher.
Larry