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Building Tips and technical articles. => Building techniques => Topic started by: Jerry Rauch on July 10, 2011, 04:40:19 PM

Title: Fuel tank question
Post by: Jerry Rauch on July 10, 2011, 04:40:19 PM

I'm again new to control line after 45 years. I have a RSM BU style 4 oz. tank which has an pickup tube, a fill/uniflow tube, and an overflow tube. 
I assume the pickup goes to the spraybar. Where does the fill/uniflow tube go to? Where does the overflow tube go to?  I'm thinking the fill/uniflow tube goes to the muffler nipple, but what would you do with the overflow, just route it to the outside of the plane??? Could someone please explain this ?
Thanks for your help....

Title: Re: Fuel tank question
Post by: Alan Buck on July 10, 2011, 05:33:57 PM

Hi, Jerry the fill/uniflow go to muffler or air stream cap off overflow. welcome back and have fun going in circles

Title: Re: Fuel tank question
Post by: Wynn Robins on July 10, 2011, 06:11:47 PM

to elaborate in Alans response -

route the overflow outside the plane - use a piece of fuel tube and use a plug to cap the line - you only need to cap it when you are flying. 

When you are filling - take the cap off, and fill - once fuel comes out of the overflow - re-cap the tube and go.