Real Time Backhoe Interview Questions and Answers PDF
• How Much Does It Cost To Build One Of These Backhoes?
figure around $1800 complete for steel and all hydraulics, a little less if you can use your tractor's on-board hydraulic system to power the unit. buying local steel should cost you close to $350 and the remaining cost would be in hydraulics and for having parts shipped in.
• How Much Hydraulic Flow (gpm) And Psi Is Required To Run This Backhoe?
The Micro Hoe can be run with as little as 3 Gallons Per Minute hydraulic flow and with as low as 750 - 1000 PSI in easy soils. for simultaneous cylinder movements like on the larger hoes using joystick valves, i suggest 4 to 6 Gallons Per Minute . for more difficult digging environments you can increase system pressure from 1000 to1500 PSI at the relief valve(s).
• Do I Need Any Special Tools To Build The Micro Hoe?
not really, i was able to build my prototype backhoe (above) with what i consider basic tools. for cutting steel i had a Makita 10" chop saw with composite metal cutting blade and a sawzall. my drilling was done with a small bench top drill press and bi-metal hole saws. my welder is a Lincoln SP-100T, 100 amp wire feed mig using .035" flux core wire, running on a dedicated 20 amp household circuit. i would suggest having a bench grinder, disk grinder, assorted clamps, bench vise, etc. just the basic stuff for garage steel fabrication projects.
• How Much Break Out Force Does This Backhoe Have?
this depends on the bore diameter of your hydraulic cylinders and what you are running for system pressure, with the 2" bore cylinders we spec running at 1000 PSI, you should be able to get 3000 lbs or better break out force, however to put this into "real world" digging terms you must take into consideration the weight of your tractor as a whole. i know on my little tractor, if i get too agressive with the hoe in difficult soil, i can easily lift the back of the tractor off the ground with the boom of the backhoe, so there is a balance you must find in every digging situation between the soil conditions, weight of your machine and how fast you can dig. you can be certain that the Micro Hoe has plenty of power to get the job done.
• How Long Does It Take To Build One Of These Backhoes?
This would depend on your steel fabrication skills, however an average mechanically inclined person with basic tools should be able to construct one of these backhoes in 4 to 6 weeks of spare time evenings and weekends. i've noticed that when you have one of these projects on the bench, you seem to suddenly find more spare time than you thought you had! i have had some customers take less than a month to build the hoe, and some quite a bit more. my original Micro Hoe took me 5 months of spare time, but that was designing, searching for suppliers, working out conflicts, building, testing, etc, etc.
• Will This Backhoe Fit My Tractor? How Does It Attach To My Tractor?
The Micro Hoe can be mounted on any tractor (or other vehicle) capable of carrying an extra 350 lbs. our plans provide an example of a solid mount sub frame cage that attaches to the rear of your tractor at 6 points, two upper mounts, two lower mounts and two arms that go under the rear axle and attach to forward points on the tractor frame. the backhoe then attaches to this sub frame at 4 points with quick pins, two upper and two lower.
the Micro Hoe can also be mounted to a category - 0 or larger 3 point hitch by welding mounting flanges to the in-board side of the main frame and using quick pins. the design of the Micro Hoe gives you two large sections of square tubing (horizontal) on the main frame with plenty of room for mounting flanges. the slew cylinder is mounted out-board which lets you mount the Micro Hoe backhoe very close to the rear of a garden tractor, or allows you the flexibility for plate mounting the backhoe to a skid steer or other vehicle.
• I Am Not Able To Weld Or Build One Of These Backhoes Myself. How Can I Get One For My Tractor?
There are a few ways to accomplish this. the most expensive would be to take our plans to a welding shop and have it built, however there are less expensive alternatives to this. we suggest looking into the vocational schools or community colleges in your area to find out if they have any steel fabrication or welding courses available. usually the instructors of these classes would welcome the thought of someone with well drawn CAD plans offering to sponsor the class with a welding project of this type. you would pay for all of the steel and hydraulics required and they would provide the labor to cut and weld it all together, free of charge.
this benefits all parties involved, the students are given the experience of working with CAD plans, steel and hydraulics, the school system benefits by having someone sponsor the project and of course, you benefit by getting to keep the Micro Hoe when they are finished!
• Will The Backhoe Fit In My Backyard?
The Kubota BX25D only requires 48” at its widest point and 70” at its highest point.
• Does Ottawa Express Bin Rentals Provide Pick Up And Drop Off Of The Backhoe Rental?
Yes, a float fee is charged in the Ottawa area of $100 total ($50 drop-off, $50 pick-up). Many competitors either do not offer pick-up and drop-off or overinflate these fees.
• I Have Never Operated Heavy Equipment, Is It Easy To Use?
Not only is the Kubota BX25D easy to use but it is fun as well! Upon drop off OEBR provides a full user demonstration and answers any questions you may have.
• What Is The Lifting Capacity?
A small, yet agile machine, known for its heavy lifting capacity of 745lbs.
• How Deep Will The Backhoe Dig?
This compact backhoe is versatile and digs down just over 6’ deep.
• It’s Best Not To Concern Yourself With What’s Going On Around You On The Job, Just Focus On Your Own Part?
False, Work as a team to help accomplish the larger objective.
• When Is It Necessary To Hand-dig, Locate, And Measure Buried Utilities?
Hand-dig, locate, and measure the depth of ANY utilities that your planned excavation approaches or crosses whether marked or not.
• Get Clear Instructions Before You Begin Trenching And Take Time To Have The Trench Marked If Possible?
True, It’s always a good idea to get clear instructions and to take time to mark your trenches.
• For Optimal Backhoe Work Set-up In Most Conditions Spread The Stabilizers To Their Maximum Width And Plant The Bucket Firmly On The Ground So That No Weight Is Resting On The Tires?
True, This will keep the machine from bouncing and also from transferring the vibration to the controls.
• For Efficient Trenching __________________?
You should always maintain a proper bucket angle and use a shaving action.
• Working The Bucket At The Correct Angle Allows The Teeth To Crumble The Soil First?
True, Once the material crumbles, it enters the bucket more easily.
• Using A Shaving Action To Dig A Trench Creates Less Stability In The Trench Walls?
False, Using a shaving action increases the stability of the trench walls because they are cut cleanly rather than having excess pressure forced against them which destabilizes them.
• When You Clear The Material From The Trench, Curl The Bucket All The Way Closed To Prevent Spillage?
False, Only curl the bucket just enough to prevent spillage. As a rule, you should only try to use the least amount of movement necessary.
• You Should Try To Make Every Pass A Finishing Pass From The Moment You Begin Digging?
False, You should only use finishing passes when accuracy counts... otherwise, move material quickly and don’t spend a lot of time trying to finish something which will be removed on the next pass.
• When Digging A Precision Footing Trench The First Pass Should ________________?
The first pass marks the beginning of the trench and is used as a guide for the rest of the trench so it’s important that it is marked with a shallow cut which is accurate.
• Clean Off The Edges Of The Trench After You Have Finished Fine-grading The Trench Bottom?
False. Clean off the sides of the trench first, otherwise you will have to dig the material you cleaned off the edge out of the bottom of the trench after you have already spent time to finish it.
• The Osha Minimum Distance For A Spoil Pile To The Edge Of A Trench Is ___________ ?
The minimum distance is 2 feet from the edge of a trench.
• When Engaging A Stockpile, In Order To Best Get A Full, Even Bucket Of Material, One Corner Of The Bucket Should Contact The Pile Before The Other?
False, To get a full, even bucket of material, the corners of the bucket should contact the pile at the same time.
• When Operating A 2-wheel Drive Backhoe Loader To Engage A Stockpile With The Front Loader Bucket, The Effect Of Forcing The Bucket Into The Material As Far As It Can Go By Driving Forward, Then Raising The Lift Arms Slightly Would Have The Overall Effect Of __________________.
On a two-wheel drive machine this will actually REDUCE traction and overall lifting force as it takes weight off of the rear drive wheels as the machine pivots on the front wheels.
• When Using A Backhoe To Hoist A Load, The Teeth Of The Bucket Are The Recommended Place To Attach A Hook And Chain.?
False, Consult the operator’s manual for the correct attachment point. It is usually located on the back of the bucket.
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