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ROTOmotor

Four-stroke, two-stroke and UAV engines for RC aircraft and drone makers, CNC-machined in Hronov, Czechia

Hronov, CzechiaFounded 1997rotomotor.czWebsite technologies

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About ROTOmotor

ROTOmotor s.r.o. researches, develops, manufactures and assembles air-cooled internal combustion engines for radio-controlled aircraft and UAV projects. Its RC lines cover two-stroke engines of 25–70 cc and four-stroke engines of 35–170 cc, with outputs from 1.1 to 6.2 kW, and a separate UAV division builds motors from 1.5 to 6.5 kW, generators up to 3.0 kW and the E-Control hybrid electronics.

The website says the company supplies the largest players in the UAV field and names IAI Israel as a customer for four-stroke engines in the Bird Eye 650D project. It also lists a complete VTOL airframe with integrated ROTO propulsion, a Roto Start System starting mechanism, and new engines ROTO 250 FS and ROTO 350 FS for 2025/2026.

The registry lists the company as an s.r.o. founded on 8 December 1997 with headquarters in Hronov, Czech Republic, and 20–49 employees. The website states that production and assembly are carried out in the Czech Republic and that UAV engines are traced through per-part serial numbers and logbooks. The site is published in English and mentions a summer closure from 28 July to 8 August 2025.

Product: Four-stroke and two-stroke RC aircraft engines and UAV propulsion motors, generators and E-Control electronics, plus a VTOL airframe with integrated propulsion.

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