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Vent from battery requested

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flyrv6(at)bryantechnology
Guest

Posted: Sun Jun 11, 2006 6:35 pm Post subject: Vent from battery requested

 

  

 Hello Listers,

  

 As I am nearing completion and eventual inspection of my -6 I had the DAR out to have a look under the panel and front area before I install the sticks and other injury items for laying in there.  He suggested I install a vent from the battery box down out of the plane.  He apparently had a bad experience with an overcharged battery when a charge system ran away.

  

 I have not heard of this before.  Does anyone have any experience in this?  If this is a very rare situation, than it hardly seems necessary.  What do you think? Outside of this, he was happy with all my work and gave me lots of pointers of little things to tidy up in the engine area.

  

 Tim

 RV-6

 N616TB

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bicyclop(at)pacbell.net
Guest

Posted: Sun Jun 11, 2006 9:55 pm Post subject: Vent from battery requested

What kind of battery are you going to use? If a flooded lead acid battery, then a sealed box with drain is a real good idea. If a recombinant gas battery, like the concord RG series or the Odyssey, you could hold it down with a strap and it would be fine. RG batteries don’t outgas and don’t need vents. They also crank the engine over like a SOB. Read up here:  

   

http://www.aeroelectric.com/articles/rg_bat.html  

   

   

Pax,  

   

Ed Holyoke  

   

--

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flyrv6(at)bryantechnology
Guest

Posted: Mon Jun 12, 2006 6:39 am Post subject: Vent from battery requested

Hi Ed,

  

 I didn't see any recomendation in that article for venting, but interesting reading.  My battery is the standard concord RG series battery.  Van's doesn't show or suggest a vent in the pland or manual.  Hopefully the issue won't be pushed such that I need to install one.

  

 Thanks

 Tim 

  

 [i]----

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bicyclop(at)pacbell.net
Guest

Posted: Mon Jun 12, 2006 7:03 pm Post subject: Vent from battery requested

Howdy Tim,  

   

Our plane has been running the Concord RG 25 that fits the standard battery box for 700 plus hours. There’s no vent for the box and no need for one. You can mount the battery on it’s side if you want and it won’t leak. Your DAR is thinking about the old style battery with vent/filler caps that you had to open up every so often to check the level of the electrolyte. Our Cessna had one of those and a vented box with a tube exiting the bottom of the cowl. It was corroded inside from the battery venting itself. Had to clean it up with baking soda and repaint pretty much every year. Not going back to that noise!    

   

Educate your DAR as to the newer technology. Concord still makes the old style flooded battery and the newer RG one. Go to Concord battery’s website or Hawker’s (the manufacturer of the Odyssey) for more info. Panasonic and others also make suitable RG batteries.  

   

Pax,  

   

Ed Holyoke  

   

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