Pietenpol-List: How light is your battery?

matronics · Post by **matronics** » Mon Jul 14, 2008 10:45 pm

Original Posted By: "Rick Holland"

matronics · Post by **matronics** » Mon Jul 14, 2008 10:48 pm

Original Posted By: Rick Holland
RickI use the Odessy 680 with my Rotec. It turns over fine and can be mounted in any position. Do you really care about weight that much when it forward of CG? 4 lb of weight roughly at the firewall equalls 1 lb at the tailwheel. Abit of weight at the FW can keep from having to move the wing back excessively. Dick N. ----- Original Message -----

matronics · Post by **matronics** » Tue Jul 15, 2008 6:45 am

Original Posted By: hvandervoo(at)aol.com

matronics · Post by **matronics** » Tue Jul 15, 2008 7:50 am

Original Posted By: Oscar Zuniga
RickMark Langford has hundreds of hours on his Corvair-powered KR with both the 2700and the 3100 "Big Boy" engines. He runs a Panasonic 18 amp-hour UPS batterythat weighs, if I remember correctly, less than 6 lbs. He recently swapped itout for a 20 Ah battery that has the same form factor. It's just a sealed leadacid UPS battery, and I think it cost $24 or so from somewhere online.Mark's airplane has relatively full electrics, radio, EFIS, and of course starterand that little battery starts it just fine.Oscar ZunigaSan Antonio, TXmailto: taildrags(at)hotmail.comwebsite at http://www.flysquirrel.net________________________________________________________________________________

matronics · Post by **matronics** » Tue Jul 15, 2008 9:31 am

Original Posted By: "Rick Holland"

matronics · Post by **matronics** » Tue Jul 15, 2008 9:13 pm

Original Posted By: Rick Holland
No, there isnt enough room on the FW. Its under the bridge deck in front of the passanger.Dick ----- Original Message -----

matronics · Post by **matronics** » Tue Jul 15, 2008 10:28 pm

Original Posted By:> Rick Holland
The Piet I have was originally designed for a Corvair engine which froze up. (described in Chet Peek's Pietenpol book)Ray Hill then installed a much lighter A-65 Continental. When I bought the plane it was seriously tail heavy. I installed the heaviest gel cell I could find, 30 # in front of the firewall behind the engine. And, for some reason the engine mount was built 4 inches SHORTER than the plan shows, which didn't help.Roman Bukolt NX20795On Jul 15, 2008, at 9:13 PM, Dick Navratil wrote:> No, there isnt enough room on the FW. Its under the bridge deck in > front of the passanger.> Dick> ----- Original Message -----

matronics · Post by **matronics** » Fri Apr 28, 2017 9:33 pm

Original Posted By: "Dick Navratil"
Subject: Pietenpol-List: How light is your battery?For you guys with batteries in your Piets which one are you using and whatdoes it weigh? William Wynne recommends the Odyssey PC680 which weights 15lbs for Corvairs. I was looking at some Miata racing stuff and came acrossthis Braille racing battery with similiar output and cost which only weights6 lbs. If it will start a 10 to 1 compression ratio Miata engine it shouldturn over a Corvair or O-200.Rick-- Rick HollandCastle Rock, Colorado**-- Rick HollandCastle Rock, Colorado________________________________________________________________________________

matronics · Post by **matronics** » Fri Apr 28, 2017 9:33 pm

Original Posted By: Oscar Zuniga
Subject: Pietenpol-List: How light is your battery?For you guys with batteries in your Piets which one are you using and what does it weigh? William Wynne recommends the Odyssey PC680 which weights 15 lbs for Corvairs. I was looking at some Miata racing stuff and came across this Braille racing battery with similiar output and cost which only weights 6 lbs. If it will start a 10 to 1 compression ratio Miata engine it should turn over a Corvair or O-200.Rick--Rick HollandCastle Rock, Colorado--Rick HollandCastle Rock, Colorado________________________________________________________________________________

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