The LVS 511 KOMBI by Strojírna Novotný represents an original concept for a small forestry forwarder, offering high versatility for both thinning and final felling operations. For this award-winning machine, we developed a complete drive control and working hydraulics system with an emphasis on precision and reliability.
A universal concept for variable conditions
The core idea behind the development of the LVS 511 KOMBI was to achieve maximum flexibility. The machine is designed to efficiently handle short timber sections while also being capable of skidding long timber using a clambunk and a remote-controlled winch with a 7-ton pulling force—all within a single site.
This versatility, supported by low ground pressure and an economical Stage V compliant engine, makes it the ideal machine for thinning and salvage logging, where minimal damage to the forest stand is a priority. Engine power is efficiently transferred to the terrain via a hydrostatic drive system, providing excellent gradeability even in challenging terrain.
This combination of versatility and environmental friendliness earned the machine the prestigious Gold Medal at the 2026 Silva Regina 2026 International Trade Fair in Brno.
Digital brain and precision control
Our primary contribution to this project was the development and implementation of a custom control system. The software solution acts as the “central brain” of the entire machine, ensuring precise control of the hydrostatic drive while simultaneously coordinating all working hydraulic functions.
The implemented features allow for sensitive power dosing, which is crucial in demanding forest terrain to maintain smooth movement and operational safety. The entire system is built on a modern CAN-bus architecture, utilizing microcontrollers that process data from control elements and machine sensors in real-time.
Integration of electronics and working hydraulics
For the control of the working hydraulics, we selected a pair of advanced PVG proportional valves. These valves allow for the precise distribution of hydraulic oil to the MOHEDA hydraulic crane, the winch, and the clambunk.
Thanks to the use of the CAN-bus and sophisticated software tuning, the hydraulic system responds instantly and with high repetitive accuracy. This synergy between software and hydraulics minimizes energy losses and maximizes component lifespan by eliminating hydraulic shocks.
Ergonomics and operator comfort
The operator’s workstation in the spacious cabin was designed with an emphasis on intuitiveness and ergonomics—factors that directly influence daily productivity.
The main HMI device is a color display featuring our custom-programmed user interface, which clearly visualizes operating data and enables easy system diagnostics. Control is facilitated by ergonomic CAN joysticks and button modules, allowing the operator to command complex movements of the hydraulic crane and other accessories with maximum sensitivity.
The result of our collaboration with Strojírna Novotný is a machine that offers top-tier technological equipment in a compact package, ready for both standard and demanding tasks in Czech and European forests.
Ing. Petr Sládek
Sales Manager
Strojírna Novotný s.r.o.
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Tomáš Vydra
Head of Drive Systems