Tractor backhoe - homemade

[BFreaky]

Thanks. I will slide it with the boom, it will have hydraulic lock with 4 single acting cylinders

 

[BFreaky]

Welding slide bars...

 

[DanMc77]

Just stumbled into this thread. Very very valuable stuff here! Must read through all of this. Many thanks to BF!!

 

[Renze]

Bfreaky, for your reference: Hitachi puts a lot of info in their brochures, with hydraulic pressure, cylinder bore and stroke, bucket force and stick length. They give a sense of ratio for your design.

I am referencing the Hitachi 3.3 tonne model to build behind my 3011. The 3011 weighs less than 3.3 ton but the center of gravity is further away from the tipping point than with an excavator, so you get more stability in relation to the vehicle weight...

https://www.hitachicm.eu/wp-content/uploads/2019/04/Hitachi_ZX65USB-6_mini-excavator_KS-EN438EU.pdf

 

[BFreaky]

Thanks. I've already bought all the cylinders. Size is quite similar; lift, dipper, and 2nd dipper will have 100/50 - stroke 800, bucket cylinder will be 80/50 - stroke 800, swing also 100/50 - stroke 200 mm, and stabilizers 60/40 - 700 mm.

 

[BFreaky]

Work finally continues. Had to put it on hold because of unexpected injury... cleaning and grinding 1st boom parts

 

[BFreaky]

Boom no 1. assembly. Gotta love those dowels, always perfectly aligned parts and so easy to make..

 

[Kyle_in_Tex]

Progress!
Hope you are alright.

 

[BFreaky]

Now I am, I twisted my ankle badly. It set me back 3 weeks

 

[Kyle_in_Tex]

Now I am, I twisted my ankle badly. It set me back 3 weeks

All that crazy techno dancing?