Couple of days ago one of our 41mtr boom pump operater had a bit of trouble pumping concrete.

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the pump is coming upto 4yrs old. as you can see still alot of thickness on s-bend. just put it down to bad cast i suppose.

jammy, was that once upon a time a s-tube?

What brand of pump is this?

sermac  and very good normally!!!

hey Jammie

tell mouse not  two pump two fast, wouldn't break it then???????????????????

sermac  and very good normally

I have never seen one up close and personal so help me out here. What is all that gear in the lower right hand part of the pic? Is it some sort of water pump? My second question is about the rather complicated arrangement with the mounting of the shift cylinders. After seeing the way that Putz, Alliance, Concord, KCP,,,,,,,,,,,,,,,,,,,, etc handles the shift cyl's this looks like a bit much. As far as the 'blown' S-tube, let any of them get too thin and they will do the same thing.

Hey Bob, that is the water pump for the power washer. And I think Sermac pumps are good pumps and very operator friendly.

eddie  

Thanks, man ;~)

Good morning Bob

Just finished printing the ACPA Bulletin on hose whipping to hang up on the office wall. Thanks

Bob-  the system is single open circuit,  with a control circuit, whereas most putz are closed dual circuit, the changover being run off a seperate pump and accumalator. Can email you the circuit if you want some bedtime reading, although i can think of better things to look at then!!!

The water pump is mounted down there because sermac use the chassis as part of the water tank , which gives you a s... load of water , but is a pain to drain!!

thanks too, for the safety bulletin.

murf   

Which oil pump do you take oil from for the accumulator circuit?

I am and always have been an open circut guy. Charge pumps are junk and I never liked the idea of depending on one for the life of a $15,000.00 main pump.

Bob.have emailed you diagram!!! think more along the lines of  single circuit putz and schwing

murf 

Don't let TooTall see that drwg'. It looks like an Elba - he will want one ;~)

REED uses a charge pump

I know, so does Putz. I am open loop forever. Just personal choice, an opinion

Every time you ask a guy with a closed loop system what happened, they all say the same thing; charge pump took a crap and ate the main pump(s)

Putz 14000 SHP-pushed 601m vertically,they also have a long line of continuous duty industrial pumps......technology at its finest,where as these other ones are just knock-offs,just my personal opinion

bisley57 

A Putz 14000 is the baddest guy on anybody's block. It will pump ready mix trucks, cab, chasis and all the rest.

No question in my mind there at all. Just hook it up and pour it out. ;~)

Now, just for a moment, let us seriously consider what it is that we, as concrete pumpers get paid for when we show up on a typical job on a typical day with a typical pump.

1.     We get paid for the time that we are on the job and perhaps some travel or mobilization time.

2.   We get paid for the length of the boom.

3.   We get paid for the number of cubic yards or meters that we put through our pumps.

That is it. Nothing else. Nada Mas as it were.

So just what do we need to bring to the game in order to play? We need a functional concrete pump. It needs to have sufficient piston face pressure to get the concrete to the end of the designated system for that days job. It needs to be able to exceed the customers’ requirements as to yardage per hour so as to be able to ‘make-up’ a little lost time if necessary.

Do we get paid for excess electronics? NO

Do we get paid for continuous duty? NO

Do we get paid for having aluminum wheels? NO

Do we get paid for snazzy paint jobs? NO

Do we get paid for residual value after payments are made? NO

*** OOPS, I forgot, residual value / equity is a concept of the past

NO

NO

NO

We get paid for hours, yards and boom length.

If it is possible that you actually plan to earn a living, you know, make money with this machine then please tell me, explain to me why in the hell you would want to pay an additional $00.10 for the machine.

And if we were just speaking of dimes, well I might understand spending the extra two nickels, but we aren’t talking about dimes.

We are talking about hundreds of thousands of dollars, for what?

Dependability? that doesn't wash.

Resale value? Oh yeah, right

Service? Don't try and sell me that today

What? If you were let loose behind a Putz, KCP, Concord, Alliance..... you couldn't tell the difference until you saw all the extra electrical equipment needed to cycle the Putz.

I respect your right to your opinion, just don't ask me to buy into the bullshit.

Bob , do You drive a T-Ford ? Black ? ;-)

I must have aluminum-wheel for the weighpermission....

think you could have a whole new posting here......

Ignore them Bob, I think you make a lot of sense.

When you show up at the welfare office in your Hummer you can bet that no one will let you cut in line. Why is this any different?

Everyone has the right to choose. I would/have fight to retain that right. You also have the right to “get a grip.” Digger touched on this a couple of days ago.

Here are two companies going after the same job. To realistically have a chance on landing the job a company would need a 40m, a 52m, and a 58 or 60 something.

Each company bids the work from the bottom up. Does the guy with the same size pumps that cost him $365,000.000 less have a better shot at getting the job …………….

Not at the same price – but for the same percent of profit

Sure he does. You may think he is cutting the price somewhere but what he really did was cut his COST. Our cost conscious shopper basically did the BUY TWO & GET ONE FREE program.

It is funny how no one wants to talk about this. It is whispered in code in the corner of the shop, but to say it out loud is a code violation of some sort.

*** I don’t know how much some machines sell for, so if I leave out yours, please chime right in.

My favorite is the big boom class. They all need the same number of axles on the road and even then many are not legal, everyone is in the same boat there. Expensive permit time.

They are all made from the same steel, they all have the same PTO set up, they all use the same hydraulic pumps, all the differential cyls’ are interchangeable, same with mat’l cyls’ and wear plates and valve bodies “S-tubes” stack valves

The list goes on and on and you know this. They are all manmade machines that will from time to time let you down.

OK – pay attention – here is my favorite part !

If you paid the same for your “A” or “C” or “K” as you do for your “P” you could have, attached to a trailer hitch on the transition, FOR NO EXTRA COST a brand new gas sucking Hummer full of spare parts towing a brand new Harley on a chrome trailer.

Now since you didn’t pay the same you have the option of either pumping for a lesser rate or putting more money in your pocket every month………………. Or perhaps you will not need to bankrupt your company by paying for technology that you can't CHARGE FOR !

Now, do I appreciate the fact that Putzmeister makes one of the best pumps in the world, YES I DO. It just costs more than it needs to ;~)

But I want a Rock Valve

 typesdubs

I understand. If I could order the pump that I wanted it would be one of the Korean machines with a Rock valve.

Everything the same, including shift cylinders except that the rock valve and hopper would replace the S tube. You just cannot beat the rock valve for ease of changeout and repair. Sort of a SCP kind of a pump.

Now you're getting my attention Bob. Maybe you know, is it patents that keep others from making a Rock Valve equivalent still?

Mitsubishi Japan used to build a Rock-Valve pump for a while in the early nineties.

As long customer buys Putz , they can have their prizetag....

I love My Putz but My older Schwing with the big pumpunit whit the longrock pumped much better and could take harshmixes...

If I should buy My own pump I probably would buy a Waitzinger, JunJin or Saraka (Finnish) less electronic to repair if it breaks , (like an old Volvo) but when the electronics works on the Putz it´s a dream .

is it patents that keep others from making a Rock Valve equivalent still?

It seems to me like that is the answer, I don't know. Think about this program;

None of the Korean mfgs are beholden to make their machines one way or the other. If they could, don't you think that they would offer a rock valve if they could?

Schwing guys are open loop folks; they were single circuit for the longest time. They could look at the hyd schem' and understand it at once.

Nope, Schwing has some very loyal customers, and the ease of turning wrenches on that rock has to be a big reason.

Hell, you can't hardly get an Stube company to produce a hopper that separates directly above the valve to make life easier on the mechanics. Not too many wrenches would give up that benefit.

YUP - A company that really wanted to sell you a pump would give you an option ;~)

Shinhwa in Korea produces a Rock-Valve shotcrete machine. Not sure if there is any tie-up with Schwing. I have also seen some shotcrete operators in Korea converting their S-tube machine to Rock-Valve.

Used to be a favourite thing with owners of defunct machines eg.wibau to take the back end off and replace it with schwing