YS SR Swallowed a Wrist Pin Keeper

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Home › RC & Power › ✈️Aircraft › 🚁Helicopter › Engines Plugs Mufflers Fuel › YS SR Swallowed a Wrist Pin Keeper

06-18-2009 05:44 AM 11 years ago

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Timbers

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Wisconsin

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YS SR Swallowed a Wrist Pin Keeper

Anyone ever had a wrist pin snap ring break and get swallowed by the piston? Happened to me tonight. 2nd time this has happened to me in 10 years of flying helis. Engine has about 20 some gallons through it, was running excellent, then it lost all power. Was able to get the heli on the ground luckly.

I wonder if I should send it to YS? I need a head, piston, ring, sleeve, wrist pin keepers, head gasket. Probably $200 in parts

I wonder if YS would cut me a deal to fix it?

...TimYou fly RC helicopters? Can I have a ride?

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06-18-2009 06:39 AM 11 years ago

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Paul Woodcock

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Dubai - United Arab Emirates

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Looks bad. A lot of damage for a wrist pin retainer clip.... guess it is pretty hard steel.

Regards
Paul

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06-18-2009 07:03 AM 11 years ago

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tadawson

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Lewisville, TX

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How old? The SR hasn't been out that long - might it still be in warranty?

- TimFriends don't let friends become electrotarded . . . .

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06-18-2009 08:24 AM 11 years ago

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Quandumphone

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Yuma, AZ

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Ouch. I'd definately explore the warranty path if that applies but either way, you should call yspartsandservice.com and see what they say. I had them do a major repair on a crashed 91SR and was pretty pleased with the outcome and cost.

You (or they) might be able to clean and smooth that head and re-use it if it is not cracked. It won't be new but could make the difference between repairing it or tossing the whole thing. You might also want to consider doing the repair yourself but clean it well (twice).

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06-18-2009 10:35 AM 11 years ago

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Peefor

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Norfolk UK

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Tim
Just curious - Had the engine ever been dismantled since it was new, prior to this mishap?

Pete

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06-18-2009 01:45 PM 11 years ago

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