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Old 06-23-2013, 01:57 PM
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proptop
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Default RE: OS 1.20 Go Boom....!!!

This is how I got a "Free" O.S. 1.20 Surpass...

Friend handed it to me one day at the field...told me to have a look inside and see what was wrong...then tell him how much $$ to fix it...and when I told him of the cost of the parts (he wanted only O.S. parts ) he told me to just keep it.

The major thrust side of the piston skirt had dropped off, and the bottom of the rod, and inside the case had been nicked / gouged by the bits and pieces...

I polished out most of the roughness in the case, and replaced the piston, ring, rod and bearings with Magnum parts and it runs just fine again...or about as well as an O.S. 1.20 usually does...no "Powerhouse" but decent...steady, etc.