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Engine basics => Engine set up tips => Topic started by: Kim Mortimore on October 05, 2009, 11:52:04 AM

Title: OS20FP: Iron Piston vs ABC Version
Post by: Kim Mortimore on October 05, 2009, 11:52:04 AM

I'm installing an OS20FP in an Old Time plane, and I just discovered that my NIB 20 has an iron piston.

The plane is a bit nose-heavy and I need the lightest (also the best performing) setup I can get. 

Does anyone know if the iron-piston version is heavier than the ABC?  Also how they compare for performance and vibration?

Thanks,
Kim Mortimore

Title: Re: OS20FP: Iron Piston vs ABC Version
Post by: bruce fraser on October 05, 2009, 03:56:57 PM

The iron version is lighter. Weight New engines, without muffler, with RC carb Iron = 198 g     Alum = 201 g

Title: Re: OS20FP: Iron Piston vs ABC Version
Post by: Kim Mortimore on October 05, 2009, 04:01:23 PM

Brucester,

You signed up with Stunt Hanger just to answer my FP 20 question?  What a friend!  Gilroy boyz rock 'n roll (and fly Ringmasters too)!     H^^

Thanks buddy,
Kim