APK 40 Bar hydraulic conversion kit Volvo EC160E

This hydraulic conversion kit was designed and manufactured by Aksorn Prongakas, founder of APK RC Hydraulics Thailand.

The technology has been continuously developed and optimized. The hydraulic pump and control valves are a new development from 2022. With the exception of a few purchased parts, everything is manufactured and assembled in-house by APK. The control valves can be controlled extremely precisely. The control commands on the transmitter are implemented very precisely and precisely, even with slow movements.

The conversion kit is pre-assembled in assemblies as shown in the pictures. The assemblies are bolted to the superstructure with just a few screws.
The hydraulic cylinders are mounted on the original mounts of the electric cylinders using the adapter sockets supplied.
The original remote control can be used. The pump is connected to channel 8 and controlled with the transmitter via the rotary control VR(A) (only old version with separate receiver).
However, if you have a little more demands, you should at least use a Flysky FS-I6S or higher to be able to set the pump mix, end points of the control valves and much more cleanly.

Adjustments must be made to the rear part of the boom and its storage so that the hydraulic hoses can be routed cleanly.

Optionally, the "slewing ring upgrade" is recommended to eliminate the wobbling of the superstructure.
The backlash of the slewing ring can be minimized with the "tuning pinion".

The model can be operated with the original battery. Depending on the setting of the pump output, it can be used for up to 30 minutes. The power consumption is very low, since the hydraulics develop more power even at half speed than anything else that is currently available in the price range "under 2000 euros".
If you want to drive longer, you can charge up to two batteries with 10,500 mAh each.

Technical specifications:

- Working pressure 40 bar (reduced from 60-80 bar pump pressure to 40 bar by means of a pressure relief valve) With the boom and stick fully extended, it lifts 4kg, and 12kg when retracted
- Precision aluminum control valve block (open hydraulic system)
- Hydraulic pump with brushless motor (60-80 bar)
- Hydraulic cylinder made of brass and hard-chromed rod, designed for an operating pressure of up to 60 bar
- Inner seal O-ring type NBR 90
- Nylon tubing 3.175mm OD

Included in the set:

- Hydraulic oil tank with built-in fine filter
- Assembly with hydraulic pump and control valve 3-fold including servos
- 30A ESC for the hydraulic pump
- 4 hydraulic cylinders including soldered brass lines
- Bolts and adapters for cylinder mounting
- Lift cylinder distributor block
- Brass lines extension with 6-point union nuts
- Double open-end wrench for union nuts
- Nylon tubing 3.175mm OD
- Hoses for return

What else does it take to experience the fun:

- A new or old Volvo EC160E (FM 1680)
- Hydraulic oil (High-performance hydraulic oil Reference 77648)

Options:

- Slewing ring upgrade Volvo EC160E (item 31441)
- Slewing ring gear with 11 teeth and grub screw Volvo EC160E (item no. 31468)
- Power battery 7.4V - Li-Io 10,500 mAh Volvo E160EC (item 31436)
- 3 pcs 30A Brushed ESC (Artikel 25473)
- APK A-Bock Volvo EC160E (item no. 311066)

This conversion kit is aimed at advanced model builders!

For the 4 valve variant, some adjustments to the base plate of the pump module are required.