RunRyder RC Helicopter Topic - RAPTOR 90 Raptor 903d has been sitting.... any tips?

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Thunder Tiger Raptors 30-90 - Imperio > RAPTOR 90 Raptor 903d has been sitting.... any tips?

clever
Senior Heliman
Location: South FL

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I bought a R903d about a year and a half ago. I took my time and went through the build and eventually got it fully outfitted for flight. After some test hovers and literally 2 or 3 very tame breaking in type flights, I got really busy and my flying time totally evaporated. So now I am ready to fire this thing back up and get it going, however It has been sitting for about 9 months. I probably should have put in some after run oil but I didn't intend to have it on the shelf for so long.

Is there anything I should do or anything I should look out for before firing this thing back up?

Thanks

07-03-2009 12:19 AM

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payne1967
Key Veteran
Location: warwickshire uk

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i would check the rear crank bearing to see if its rusted up
if it has i would change it

07-03-2009 01:43 AM

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Maxime30
Heliman
Location: Quebec City, Canada

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Yes check the engine bearings, and maybe flush the engine with glow fuel to de-gum it.

Personnally I would dissasemble the head grips and re-grease the dampers and thrust bearings. But that's just me...

Do a very good inspection ( all screws are tight, no binding, everything working in the correct direction etc. ), check your batteries and FLY!.

Max

07-03-2009 01:37 PM

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clever
Senior Heliman
Location: South FL

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Thanks guys I will look into these areas. I will post my findings.

07-04-2009 03:49 AM

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Yug
rrMaster
Location: UK. Herts

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Check rear bearing and replace if necessary. Thoroughly check fuel system after replacing clunk lines. Check electrical integrity of all connectors.

Vegetable rights and Peace

07-05-2009 09:49 AM

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clever
Senior Heliman
Location: South FL

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The rear bearing looks a little discolored perhaps slightly rusted, however the when rotating the crankshaft by hand it feels smooth. I think I am going to just replace it to be safe. The manual doesn't say the bearing dimensions does anyone know what the replacement bearing dimensions for the YS91SR are? I would like to get one from Boca Bearings but they don't list one for that engine on their site.

07-06-2009 02:08 AM

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Thunder Tiger Raptors 30-90 - Imperio > RAPTOR 90 Raptor 903d has been sitting.... any tips?

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