The Sound of Twin UMS 5-55 Radial Engines ( TURN IT UP)

Breaking in two UMS 5-55 Radial engines swinging a 20x8 XOAR prop. These engines will be used on ziroli DC-3 10' wingspan 50lbs airplane.

[@leviathan351cleveland3]

Sounds great!!

[@chrisross7936]

Great sound from the twins! If you run into trouble with cylinders dropping out check/replace the plugs. I had to replace 5 out of 7 on my 50cc but it now runs perfectly like it did on the first 40oz of fuel.

[@jamesboatbuild]

Truth be told one of the engines new out of the box the valves were way out of adjustment. Over all nicely built.

[@briansilcox5720]

Going to be one hell of a great Douglas!

[@markgallagher1376]

Those sound awesome!! Be careful or that table is going to take off down the street. lol.

[@jamesboatbuild]

I Know ,.....right!

[@youguise]

that table is gonna fly away!

[@markdi2]

kool