RCU Forums - 40la

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fredsedno

06-23-2007 04:19 PM

40la

Am breaking in a new OS40la. Need to know recommended full throttle rpm,idle rpm. I am running 10% nitro with a 10-5 mas prop.
I plan to run 15%heli fuel a/break in. I am currently running a AX46 on that fuel.
thanks in advance
Fredsedno

Bax	06-25-2007 09:46 AM

RE: 40la

Please make sure the fuel you use in your O.S. Max .40 LA contains castor oil in the lubrication. It's a plain-bearing engine that will benefit greatly from castor oil in the fuel.

As far as RPM is concerned, we use a 10 x 6 propeller and expect to see the engine turn in the mid-11,000's. Idle should be about 2,500-2,700 RPM.

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