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ROTO 25v Gas engine

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ROTO 25v Gas engine

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Old 03-18-2024, 07:01 AM
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me-jozef
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Default ROTO 25v Gas engine

I have this cool-looking gas engine. Roto 25V, made in the Czech Republic by Rotomotor.
Does anyone have experience with this engine?
Old 04-19-2024, 08:34 PM
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bbdreaux
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Yes I have one with about 4gal of fuel thru it very good running engine swings a larger prop than other 25cc I have a 3 blade 17x6 on a scale plane has tons of power only complaint is its weight weighs a lbs more than dle 20 that swings a 16x6 the recommended prop for the roto 25 is 18x6 the engine has a longer stroke producing more torque
Old 04-19-2024, 08:37 PM
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bbdreaux
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Also I started to break it in with a 16x8 but ran hotter at high rpm’s so I went a 17x8 to finish breakin and engine ran much cooler

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