Question about setting up hydraulics on grapple??

[MadReferee]

Henro,

I don't think that DPOCV's will be an issue with a grapple. Why, because you will only be squeezing something for a very short time while you are moving it to it's final destination. Since most grapples are controlled from an electric solenoid valve or diverter, I think it's a non-issue.

 

[MadReferee]

Henro,

I don't think that DPOCV's will be an issue with a grapple. Why, because you will only be squeezing something for a very short time while you are moving it to it's final destination. Since most grapples are controlled from an electric solenoid valve or diverter, I think it's a non-issue.

 

[couchsachraga]

If I didn't have a problem with my grapple "losing it's grip" on occasion, I'd agree with you!

My WR Long grapple is GREAT, but on occasion when I push the limits (e.g. trying to pick up a flat piece of steel) it will drop things after a few minutes. Mind you, if I pick things up the RIGHT way, with the "teeth" under the object rather than pinching, there is no problem.

The WR Long root grapple right now is my most prized attachment (most expensive though too...my parents paid less for their '65 Cub than I did just for the grapple!).


Couchsachraga

 

[couchsachraga]

If I didn't have a problem with my grapple "losing it's grip" on occasion, I'd agree with you!

My WR Long grapple is GREAT, but on occasion when I push the limits (e.g. trying to pick up a flat piece of steel) it will drop things after a few minutes. Mind you, if I pick things up the RIGHT way, with the "teeth" under the object rather than pinching, there is no problem.

The WR Long root grapple right now is my most prized attachment (most expensive though too...my parents paid less for their '65 Cub than I did just for the grapple!).


Couchsachraga

 

[Henro]

<font color="blue"> Since most grapples are controlled from an electric solenoid valve or diverter, I think it's a non-issue. </font>

Madref, you could be right. However, for some reason I seem to remember a thread from the past where issues like loosing grip were mentioned. Now this could have been due to a need to carry things a long distance, or could have been due to whatever was being held compressing over time, I don't know.

I suppose if a diverter valve is used it serves the same function as a check valve anyway...

 

[Henro]

<font color="blue"> Since most grapples are controlled from an electric solenoid valve or diverter, I think it's a non-issue. </font>

Madref, you could be right. However, for some reason I seem to remember a thread from the past where issues like loosing grip were mentioned. Now this could have been due to a need to carry things a long distance, or could have been due to whatever was being held compressing over time, I don't know.

I suppose if a diverter valve is used it serves the same function as a check valve anyway...

 

[stevenf]

MadReferee, Don't take this the wrong way I wouldn't want to be the one to start a P-ing contest but after well over a year of using my grapple I can say, I transport many things I pick up over a mile plus if its trees the grapple will compress them when engaged and constantly are pushing outward once compressed if you have bleed off on the valves that allows you to drop a load in transport and your moving very fast you get to run over it or at least into it. I'd think pilot valves in this instance would be an important item to include especially when at least in my case I'm picking up a tree or trees that weigh several thousand pounds and moving them, it'd be nice to not have them get away from you while your moving as even with anti bleed devices I've lost a few loads and its amazing how fast even in low gear you need to react in order to keep from running over what you just dropped, figure in 4 feet come to a dead stop or hit it. It makes for an exciting day though nothing like adrenaline running thru your veins when its a hundred degrees and you been on the tractor for 10 hours.
Steve

 

[stevenf]

MadReferee, Don't take this the wrong way I wouldn't want to be the one to start a P-ing contest but after well over a year of using my grapple I can say, I transport many things I pick up over a mile plus if its trees the grapple will compress them when engaged and constantly are pushing outward once compressed if you have bleed off on the valves that allows you to drop a load in transport and your moving very fast you get to run over it or at least into it. I'd think pilot valves in this instance would be an important item to include especially when at least in my case I'm picking up a tree or trees that weigh several thousand pounds and moving them, it'd be nice to not have them get away from you while your moving as even with anti bleed devices I've lost a few loads and its amazing how fast even in low gear you need to react in order to keep from running over what you just dropped, figure in 4 feet come to a dead stop or hit it. It makes for an exciting day though nothing like adrenaline running thru your veins when its a hundred degrees and you been on the tractor for 10 hours.
Steve

 

[MadReferee]

Interesting.

I have never used my grapple to carry anything really heavy, mostly just brush. Since my loader's lift capacity is only around 900 or so pounds I don't think it would make a difference. At least in my case.

Later this summer I will have some heavier logs to pickup and carry around. Instead of using my bulldozer I will give the grapple on the Kubota a try and see what happens.

 

[MadReferee]

Interesting.

I have never used my grapple to carry anything really heavy, mostly just brush. Since my loader's lift capacity is only around 900 or so pounds I don't think it would make a difference. At least in my case.

Later this summer I will have some heavier logs to pickup and carry around. Instead of using my bulldozer I will give the grapple on the Kubota a try and see what happens.