I just bought a used towable backhoe that needs work. Ex-owner said it never worked right due to the hydraulic pump. Could you guys tell me what brand and model you used and where you bought it . the tank holds 5 gallon of oil and the engine is 10hp.Also how do your turn the pump, belt,chain or direct. THANKS
towable backhoe
- Thread starter macky
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I have never used a towable. however, I have used several very light hoes. Including one I currently own.
I have always suspected these towables to have a very limited ability to dig because of the fact that they do not have the weight to keep from simply pulling them selfs along with every attempt to dig. This is a problem even with my tractor in hard ground.
If you get it working properly, please post how well it works.
I have always suspected these towables to have a very limited ability to dig because of the fact that they do not have the weight to keep from simply pulling them selfs along with every attempt to dig. This is a problem even with my tractor in hard ground.
If you get it working properly, please post how well it works.
dfkrug
Super Member
- Joined
- Feb 3, 2004
- Messages
- 7,589
- Location
- Santa Cruz Mtns, CA
- Tractor
- 05 Kioti CK30HST w/ Prairie Dog backhoe, XN08 mini-X
I used a small Prince hyd pump on my CADDigger 728. I do not
remember the model, it was less than 1 cu in/rev if I recall. My first
engine was a M/C 4-cyl and I used a chain and sprockets for the drive.
My 2nd engine was a Tecumseh 10hp and I used direct drive with
Lovejoy coupler and ran at 3600 RPM.
These light home builts do not rely on weight to dig; they rely on the
ability to pinch dirt (as on the back side of a hole) between the dipper
and the well-planted sharp outriggers. I does work.
remember the model, it was less than 1 cu in/rev if I recall. My first
engine was a M/C 4-cyl and I used a chain and sprockets for the drive.
My 2nd engine was a Tecumseh 10hp and I used direct drive with
Lovejoy coupler and ran at 3600 RPM.
These light home builts do not rely on weight to dig; they rely on the
ability to pinch dirt (as on the back side of a hole) between the dipper
and the well-planted sharp outriggers. I does work.
dfkrug
Super Member
- Joined
- Feb 3, 2004
- Messages
- 7,589
- Location
- Santa Cruz Mtns, CA
- Tractor
- 05 Kioti CK30HST w/ Prairie Dog backhoe, XN08 mini-X
macky said:
I checked and my memory was faulty. It was a Barnes pump and I think it
was the .129 cu in. model, one stage. (I buy mostly Prince stuff these
days.) I looked in Northern tool catalog to jog my memory.
What pump and drive you use depends on the motor and flow rate needed.
If your cyls are 3", you should shoot for a 3 or 4 GPM rate. If your motor
is a cheapo 10hp B&S or Tecumseh, they make their 10hp at 3600 RPM,
so you will need a pump that can be turned that fast. To get 4GPM, you
would need the Barnes .388 cu. in. pump. Direct drive is the simplest
route. Those motors are awful, however. Loud and very high vibrations.
My 4-cyl M/C engine was smooth and quiet, but it would get too hot at
the speed I ran it. I have a Honda CX500 water-cooled motor for the
next time I want a decent stationary engine. These engines do NOT have
to be run at 3600RPM.
A 2-stage pump is great, but you need to find one that can handle the
motor speed. Your relief valve on the digger is prob set at 1500psi.
valleydweller1
Silver Member
I just bought a Caddigger 728 that a friend of mine built a couple years ago, the pump is a Barnes, the plate has the numbers 12397 and 1003044. It's powered by a B&S 8hp.
Can anyone cross this pump for us to get the displacement/flow?
Greg
Can anyone cross this pump for us to get the displacement/flow?
Greg
PILOON
Super Star Member
I have owned a 'Crichet' by Toehoe for about 10 years now.
Origionally I purchased intending to mount it on my Mitsubish 180D tractor.
After 'playing' with it a bit I discovered that it was better off as a stand alone machine as it did things and acessed sites that a small backhoe would be dangerous.
The engine was a 6 hp Robin direct coupled to about a 3gpm pump.
Controls are a 4 valve stack. This rig simply amazed me with capabilities.
Have dug trenches 4 ft deep.
Exracted 45 gal sized rocks.
Made many ditches.
Burried 300 ft of well pipe on rather impossible grades.
Once you get the hang of it, you can walk the unit quite rapidly across terrain
and it kinda feels like riding a slow bucking horse. Hop,hop,hop! (hence the name 'Cricket')
Because of the widly spaced legs or 'claws' that dig in the more you scoop/dig the more stable it is and due to width of legs and low center of gravity it is virtually tip proof on steep slopes.
The pump is single stage and the machine works about as fast as most small excavators do.
With that small 6 hp the power is enough to lift the whole machine off of the ground when the bucket is firmly grabbed onto a tree or large rock lip.
You soon learn techniques, like digging a side hole to roll out a rock that the machine can't lift or leveling the terrain by swinging the bucket from side to side etc.
Biggest drawback is (on mine) the height the bucket will clear like to load a trailer.
I suspect that my lift cylinder has an internal sleeve to limit the travel (was a rental unit)as all cylinders are interchangeable but the lift has 2" less travel.
Adding the travel would raise the arm high enough to load most trailers.
Just been to lazy to open up and remouve the 'plug'.
You see, on a moderate slope, higher lift at maximum swing could become quite hairy and be a possible liability factor.
'One of these days' I'll remouve that limiter sleeve.
Yeah, said that more than a few times!
Nice. practical fun machine!
Nearby (Drummondville, Que) a firm still makes a similar or copy of this machine and sell it for $8-$10,000. depending on options.
On mine the concept is swapping claw legs for wheels and hitching to the trailer hitch for towing to the work site.
One uses the hydraulics to jack the machine in a tilted fashion and swap claw for wheeled leg one side at a time. Takes about 5 mins all told to go from work to trail mode.
One very popular usage was trenching for hedge plantings.
Good luck, and have fun!
Don't ask for pics as right now it is under about 6 ft of snow!
Which I'll gladly give to all you guys that were begging for some to try out their blowers and plows.
Origionally I purchased intending to mount it on my Mitsubish 180D tractor.
After 'playing' with it a bit I discovered that it was better off as a stand alone machine as it did things and acessed sites that a small backhoe would be dangerous.
The engine was a 6 hp Robin direct coupled to about a 3gpm pump.
Controls are a 4 valve stack. This rig simply amazed me with capabilities.
Have dug trenches 4 ft deep.
Exracted 45 gal sized rocks.
Made many ditches.
Burried 300 ft of well pipe on rather impossible grades.
Once you get the hang of it, you can walk the unit quite rapidly across terrain
and it kinda feels like riding a slow bucking horse. Hop,hop,hop! (hence the name 'Cricket')
Because of the widly spaced legs or 'claws' that dig in the more you scoop/dig the more stable it is and due to width of legs and low center of gravity it is virtually tip proof on steep slopes.
The pump is single stage and the machine works about as fast as most small excavators do.
With that small 6 hp the power is enough to lift the whole machine off of the ground when the bucket is firmly grabbed onto a tree or large rock lip.
You soon learn techniques, like digging a side hole to roll out a rock that the machine can't lift or leveling the terrain by swinging the bucket from side to side etc.
Biggest drawback is (on mine) the height the bucket will clear like to load a trailer.
I suspect that my lift cylinder has an internal sleeve to limit the travel (was a rental unit)as all cylinders are interchangeable but the lift has 2" less travel.
Adding the travel would raise the arm high enough to load most trailers.
Just been to lazy to open up and remouve the 'plug'.
You see, on a moderate slope, higher lift at maximum swing could become quite hairy and be a possible liability factor.
'One of these days' I'll remouve that limiter sleeve.
Yeah, said that more than a few times!
Nice. practical fun machine!
Nearby (Drummondville, Que) a firm still makes a similar or copy of this machine and sell it for $8-$10,000. depending on options.
On mine the concept is swapping claw legs for wheels and hitching to the trailer hitch for towing to the work site.
One uses the hydraulics to jack the machine in a tilted fashion and swap claw for wheeled leg one side at a time. Takes about 5 mins all told to go from work to trail mode.
One very popular usage was trenching for hedge plantings.
Good luck, and have fun!
Don't ask for pics as right now it is under about 6 ft of snow!
Which I'll gladly give to all you guys that were begging for some to try out their blowers and plows.
valleydweller1
Silver Member
macky said:
Macky,
It is single stage, direct drive through a Lovejoy coupling. It seems to provide all the power I need.
Here's a pic:
Greg
