ovrszd
Epic Contributor
- Joined
- May 27, 2006
- Messages
- 32,246
- Location
- Missouri
- Tractor
- Kubota M9540, Ford 3910FWD, Ford 555A, JD2210
Ovrszd, while everything that you say is true, just so that others do not get the wrong idea, all of these things can be accomplished with a diverter valve setup without ever taking your hand off of the joystick or even using a rear remote. It may not be as convenient, but most definitely doable.
If you have a chance, it would be interesting (for me anyway) to see a video of just what speed all 3 functions operate at when operated at the same time at whatever RPM it is that you normally work at.
Brian, actually your first paragraph is inaccurate. A diverter valve never at any time allows you to perform three functions at once. All a diverter valve does is exactly what it's name implies, it diverts oil flow. It's like a Y in the oil path. Imagine the oil pressure moving up the Y from the bottom. When it reaches the split, it has to go to the left or to the right. This is determined by whether you have the button pushed which activates the diverter valve or not. For example, no button push and all flow goes to the left or to the curl of your bucket. Push the button and all flow goes to the right or to the 3rd function. NEVER AT ANY TIME does the flow go to BOTH.
With a true 3rd function setup there is oil flow available to the bucket lift, bucket curl and 3rd function simultaneously. All that is diminished if 3rd function is activated is speed. Same thing applies when you perform bucket lift and bucket curl simultaneously. Or perform each function, lift/curl/3rd function individually and the speed picks up.
Naturally the tractor is only capable of a certain gallon per minute (gpm) flow. Again, for example, using easy math, assume the tractor is capable of 21 gpm. Three different scenarios are possible.
1. When only one function is activated all 21 gpm goes to that task which is lightening speed. My Grapple slams open and slams shut in a second or less if operated alone.
2. When two functions are activated all 21 gpm is split between two tasks. Now you have 10.5 gpm of flow at each function. Now my Grapple slows and firmly opens/shuts without slamming.
3. When all three functions are activated all 21 gpm is split between three tasks. Now you have 7 gpm of flow is each function. Now my Grapple gently opens/shuts.
What my system gains over a diverter is there IS ACTION in all three functions regardless of how slow. Thus, I can set my Grapple down as shown in the first picture and in one smooth move, pick up that log, with no diversion back and forth between Curl and Grapple. Is that ability paramount?? Nope. Is it more convenient? Definitely. At the end of the day is it more productive?? WAYYYY more productive.
For anyone that is familiar with a Backhoe. The digger boom on a hoe has three cylinders. One lifts the boom. One bends the elbow. One bends the wrist or curls the bucket. Would you rather run a hoe that will do all three of those functions at once, even if it's at a slower pace??? Or would you rather have a button on the boom lever that switches the elbow function and wrist back and forth, never performing both at once??
This gets us to your second paragraph. I agree it will be interesting to see these functions performed individually, then two at a time, then all three at a time to judge how much speed is lost. I'll make that a priority in the video as well. Good point.
