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os 55 ax carburetor


Old 04-11-2011, 09:12 PM
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Default os 55 ax carburetor

Had a mid air a couple of weeks ago, and realized that the carburetor neck was cracked and the retaining screws had fallen off. A small crack is also seen in the crank, where the carb is attached.
Is there any way to fix this or should I replace the engine ? What size / type are the retaining screws ? Size mentioned on carb specs is 3.5 x 5 mm. Could not find any such screws on Tower hobbies OS parts list.

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Old 04-19-2011, 07:31 AM
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Default RE: os 55 ax carburetor

If the carb has the crack, replace the carb body.  If the engine is cracked, you may need to replace the crankcase.

This screw will work:

OSMG3840   25081700 CARB SCREW #4D4C2H    US$2.29

These parts can be ordered through any hobby retailer who sells O.S. Max engines and accessories.
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