Light Hydraulic for drilling rock

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Anyone use Light Hydraulic for drilling rock?

I have a chance to buy one of these used tomorrow anyone use one for drilling rock with a carbide type of bit. I'm thinking my 4 1/4" carbide bit that I have.

It has a 9 Hp Robin Engine and pump coupled to it. What is a good price for one of these?
 

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OP
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The RPM's is up to 110. Would add a water coupler for water cooling the bits. It appears to break down into parts for transport and making each load lighter. Will add some hydraulic couplers as well.
 
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If I can't really break this unit down I will not be able to get it out into the woods. I may have to modify to make it take down better. I will have to cable this out to use it on a rock pile etc.
 

russau

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I think a person with some imagination would be able to make one their self for a lot cheaper since you already have the drill bit. the only trouble I see is that it is limited to depth and adding longer /more bits .
 
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I think a person with some imagination would be able to make one their self for a lot cheaper since you already have the drill bit. the only trouble I see is that it is limited to depth and adding longer /more bits .
Yea the cost is to high for a lot of the units however this one is used and is hard to beet. One can always add extension pipe sections to go deeper then 36" or so.
 

Jim in Idaho

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A Pionjar is hard to beat for drilling rock. I've drilled hundreds of holes, in concrete, with one. They weigh about 60lbs.
Jim
 
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A Pionjar is hard to beat for drilling rock. I've drilled hundreds of holes, in concrete, with one. They weigh about 60lbs.
Jim
These are good units for smaller holes in general. I'm going to try using electric units for smaller holes and this hydraulic unit for larger holes for easy wedging with the small pile (350 lbs.) of different wedges I have. Just a different approach that will not work in all conditions. Getting the tools to the rock is the big issue in most cases.
 
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I think a person with some imagination would be able to make one their self for a lot cheaper since you already have the drill bit. the only trouble I see is that it is limited to depth and adding longer /more bits .
Would love to see any ideas on a water couplers if you come across any.
Machining a coupler could pay for itself very quickly. Let me know what you come across. Thanks.
 
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I'm all in now as I will buy the unit pictured above in a few hours. This will step up the game a few notches if it can be broken down into compact units to then be cabled in. Not much else can even work out in the woods.

As a back up plan I need to dig around 40 post holes so this will not be a total waste investment. Will start small scale with much smaller bits dry to see how it runs. I hope to find a 2" carbide bit used if I can to test it out.
 
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The unit is now home. It took a number of pulls to start as we could not figure the on / off switch. I think it will work turning a 3/4" shaft.
 
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Now I get to shop for the right pipe that will fit the bit and a water connector. Heck I should shop for a 1 3/4" - 2 1/2" bit used as well. I will change all the liquids and test drilling post holes for a fence etc. to get a feel of the machine. Then figure out how to make the unit breakdown into smaller packages and box up to put hooks on them.
 

Jim in Idaho

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These are good units for smaller holes in general. I'm going to try using electric units for smaller holes and this hydraulic unit for larger holes for easy wedging with the small pile (350 lbs.) of different wedges I have. Just a different approach that will not work in all conditions. Getting the tools to the rock is the big issue in most cases.
They now have some decent battery-powered chipping hammers and rock drills....might be a handy way to go for <1" holes, which would be large enough for wedges.
Jim
 
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They now have some decent battery-powered chipping hammers and rock drills....might be a handy way to go for <1" holes, which would be large enough for wedges.
Jim
I'm thinking of a 2 Hp 2 cycle engine set up for some drilling. I will start with inexpensive electric drill hammers first connected to a generator.
 

Jim in Idaho

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That'll work, providing you can get the generator to the locale...LOL
Jim
 
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May have to machine a copular for the water coolant to flush and cool the carbide bits.
 

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