- May 27, 2006
- Kubota M9540, Ford 3910FWD, Ford 555A, JD2210
The marketers for the gorilla grapple pulled a fast one. They used the number for cylinder force for a 4" cylinder at 3000 pounds and indicated that this is the force at the ends of the tines. However, based on the dimensions you shared, the force at the end of the tines is on average about 1/5th of the cylinder force, or about 7500 pounds. The force would vary through the the arc as the cylinder angle changes.
I think that's a common marketing practice. To get the cylinder force at the ends of the tines the cylinder stroke would have to be the same length as their travel distance?? At least I think that's right??