OS LA 25. A Look Inside And Break In Run.
This engine was obtained with a plane that was completed but never flown. During disassembly, it looked like this engine had never been run, but the engine turned over freely and might have been run before so I decided to do a break-in run just to be sure. I only replaced the hardened O-ring and it has very good compression. It runs very well.

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Restoring a seized vintage OS Max 20FP rc plane engine to top running condition. And test run.

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How To: Setup A Carburetor

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OS FS90 Second Run Success!

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A Day in the Life of a Model Engineer

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Starting and Tuning a 2 cycle Nitro RC Airplane Engine

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Unbelievable Smart Worker & Hilarious Fails | Construction Compilation #8 #adamrose #smartworkers

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How To: Airbleed vs Twin Needle Carb

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God Says:"DON’T IGNORE THIS IMPORTANT LETTER I SENT YOU"/God Message Now/God Message

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25 vergessene Arme-Leute-Frühstücke aus den 50ern, die heute niemand mehr macht

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Optimising a VTOL

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OS 46LA Service And Test Runs

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American Reacts to Trumps Pool-Fiasko & Peinliche Videos von Politikern zur WM

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Compressed Air Powered Plane

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DIY Hand-Dug Well: Complete Process from Start to Finish

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OS FS 52 Surpass. Part 1/3 Disassembly.

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God Says:"MY CHILD, I NEED TO SEE YOU URGENTLY!"/God Message Now/God Message

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My Oval Engine Now Fires At Will! Major Milestone For DIY Oval Rotary Engine 2.0

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Unbelievable Smart Worker & Hilarious Fails | Construction Compilation #5 #adamrose #smartworkers

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Twin Supercharged 4 Cylinder Nitro RC Engine

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