PTO Pump

[LarryRB]

when I had my 4110, the first thing I did was put a Fisher snow plow blade on the bottom of front bucket, and ironically, two fo teh holes line up perfect with Mahindra's factory drilled holes. The rest you have to drill yourself. Makes the bucket almost bullet proof and will last a long, long time.

 

[Dougster]

I ordered my tractor with the 72 HD bucket so I could do woods work. Its identical except width to the wide buckets, so it would actually be a little more durable than they. I am told it is the narrowest one available for the 7520. Still, I am having trouble keeping the bottom edge straight when toppling trees. Im going to have to add some reinforcement I guess.
larry

As long as it is still a 25-inch deep HD bucket, I can see where that makes sense for your needs. The 15-inch deep version (like I have in 72" LD and 78" HD) would be a joke on your monster 7520.

I am in the process of adding a second, thick cutting edge to my old 72" LD bucket. Still trying to decide between 1/2" thick and 3/4" thick. I don't need it bending ever again.

Dougster

 

[Dougster]

when I had my 4110, the first thing I did was put a Fisher snow plow blade on the bottom of front bucket, and ironically, two fo teh holes line up perfect with Mahindra's factory drilled holes. The rest you have to drill yourself. Makes the bucket almost bullet proof and will last a long, long time.

No pre-drilled holes on my old bucket. I have wavered back and forth several times on adding a new bolted (reversible) cutting edge vs. a new welded cutting edge. Being fundamentally lazy... and seeing how well the cutting edge is holding up on my 78" HD bucket... I'm now thinking welded.

The fact that I finally located a local welder who may not take me to the cleaners is also entering bigtime into the equation.

Dougster

 

[bindian]

Dougster,

I don't think the prince will make the hoe any stronger. Will make it faster though. If I understand it right the limiting factor of hydraulic force is pressure against surface area of the cylinders internal plate. When you go a higher GPM pump you can just move around faster. I run a little higher than Bob, around 1800rpm on the 6500 w 511 hoe. I have the swing speed turned down a bit so it doesn't throw me side to side, but I find I can scoop faster this way.

When I first started using the hoe I tried to dig big buckets of stuff. As I get better, I learn that it is actually faster to skim and peel the material to fill the bucket, and also makes for a lot less wear on the machine.

I guess I am saying if the 509 is embarrasing you you'd better look at the 511 or bigger .

The reason I like the idea of the prince pump is that it is a well known pump and available everywhere. The bradco is somewhat more secretive and mysterious, and with the gearcase oil issues I've been having I'd go prince next time. Just make sure that the prince will fit between the hoe and the tractor, especially if you are going oversized.

Tim,
When you have a pump with a higher gpm capacity rated at the rpm your factory pump is rated at, you can run a lower rpm and still get the factory rated gpm rating. This will save a lot of wear and tear on you and your tractor. Higher rpm tends to make stuff vibrate more and come loose also. The vibration of running at 2250 rpm I am running my BH at now took my steering wheel nut, that was not tightened correctly and finished unscrewing it.
First thing I changed on my 6520 was installing bolts in lieu of quick pins on the ROPS. Those quick pins really sung when the rpm was cranked up for the BH, since they were right at your ear level.
hugs, Brandi

 

[bindian]

I am now running a tad over 2500 rpm now while using the BH. These last couple of hundred rpm put the 511 on a whole new plateau. Now, I can sit the curled bucket down in a hole and raise the whole back end of my 6520 off the ground and then swing the boom over and plant my rear end a couple of feet over to one side. Just like the big boys.
hugs, Brandi

 

[Dougster]

I am now running a tad over 2500 rpm now while using the BH. These last couple of hundred rpm put the 511 on a whole new plateau. Now, I can sit the curled bucket down in a hole and raise the whole back end of my 6520 off the ground and then swing the boom over and plant my rear end a couple of feet over to one side. Just like the big boys.
hugs, Brandi

Well, one must assume that you are up to your full 11.4 GPM or possibly even a bit over (since the technical basis of Mahindra's flow numbers is still a minor mystery). So you are near the high end of the current 9 to 12 GPM recommended operating range. Meanwhile, I'm down at the low end of the recommended range and am still not satisfied that I'm getting all out of this machine that it can deliver.

This job that starts on the 17th will use everything this 509 of mine can possibly deliver. If it falls short... forcing me to rent a back-up JD110 to complete the work... the PTO pump is quickly going to jump to the very top of my "critical needs" list.

Dougster

 

[bindian]

Well, one must assume that you are up to your full 11.4 GPM or possibly even a bit over (since the technical basis of Mahindra's flow numbers is still a minor mystery). So you are near the high end of the current 9 to 12 GPM recommended operating range. Meanwhile, I'm down at the low end of the recommended range and am still not satisfied that I'm getting all out of this machine that it can deliver.

This job that starts on the 17th will use everything this 509 of mine can possibly deliver. If it falls short... forcing me to rent a back-up JD110 to complete the work... the PTO pump is quickly going to jump to the very top of my "critical needs" list.

Dougster

Dousgster,
I am sure, you will love your new PTO Pump.
hugs, Brandi

 

[Dougster]

Dousgster, I am sure, you will love your new PTO Pump.
hugs, Brandi

Well, there's a big VOTE OF CONFIDENCE in the 509 running off the 4110's 9.5 GPM max flow!!!

Dougster

 

[Dougster]

This job that starts on the 17th will use everything this 509 of mine can possibly deliver. If it falls short... forcing me to rent a back-up JD110 to complete the work... the PTO pump is quickly going to jump to the very top of my "critical needs" list.

Wrote a detailed review of the 4110+509's performance last week on the "rockscape"... only to have the evil elves of Microsoft Internet Explorer zap it away. So here is the short version:

The 4110+509 combo did better than I expected... and not as good as I had hoped. There is no clear indication that I need a PTO pump... or that I don't. In the end, running at 2,000 and 2,500 RPM respectively (depending on the particular challenge), I was able to pop out all couple dozen rocks (boulders?) that I was assigned to remove... except one (which I did manage to dig around and loosen for later drag chain removal). Also had a quite difficult time with another one of near equal size (i.e., big!)... but in the end, I did get that one popped out.

But the high percentage of success does not tell the whole story. Despite the high numerical success rate, it was neither a pretty nor confidence-building experience... and I came away more discouraged than satisfied. The 509 backhoe literally got stuck between and under rocks more times than I care to count. Give me stumps anytime... these nasty, large rocks are for the birds.

Smart people, whose opinions I respect, have recently told me to focus on hydraulic system operating pressure rather than the increased flow that I could get out of a PTO pump. I think that last week's experience (including some unexpected FEL struggles) points to a possible deficiency in operating pressure and I need to check that out. The closer I can operate to the 2,500 PSIG design pressure of the Bradco 509, the better! A new 3,000 PSIG pressure gage is on order as we speak.

Dougster

 

[Tim_in_IA]

.... told me to focus on hydraulic system operating pressure rather than the increased flow that I could get out of a PTO pump. ......

Dougster

Dougster. Another thing that I am sure you already know is that it makes a big difference what holes you have the cylinder attached to the bucket with. I am not sure how you are digging but you might experiment moving these around. My 511 buckets have 3 different positions. Some are great for scraping up against a wall and others are better for ripping.