RCU Forums - View Single Post - First 4 stroke/cycle engine - Extra Nipple!!!
Old 11-19-2005 | 06:10 PM
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RC-Captain
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From: RCHill, NJ
Default RE: First 4 stroke/cycle engine - Extra Nipple!!!

Assuming you are flying a scale plane , my bet is on the extra nipple is for a pump connection with a check valve to better pressurize the tank.