IslandTractor
Super Star Member
- Joined
- Sep 15, 2005
- Messages
- 15,802
- Location
- Prudence Island, RI
- Tractor
- 2007 Kioti DK40se HST, Woods BH
I think you are right. It will give substantially more clamping power which is not always a good thing. The upper lid on a grapple typically serves just to hold a load steady while being transported. To achieve that requires very little clamping force. What requires clamping force is grabbing on to a stump or big rock and pulling it out of the ground (rather than just sticking the lower times under an object and curling or lifting it out). The potential problem comes when the object is asymmetric and one jaw tine tip makes contact well before the second so that the load is clamped by just one edge of the upper lid. With a lot of extra clamping force, the upper jaw can be twisted or the single tine can be splayed out. Ask me how I know. I'd be a bit concerned about the new EA as their lovely upper jaw is wider than my grapple's 18" jaw and therefore the twisting force would be magnified. EA could test this pretty easily by blocking the upper jaw on one side and then clamping to see how much deflection occurs. Of course dynamic forces incurred when using the lift/curl or tractor movement could easily add significantly to the forces on that single tine but that would be the same with the smaller original ram too.I think increasing cylinder diameter from 2 inch to 2.5 inch actually increases clamping force by over 50%, rather than 20%, if anyone really cares.
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