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912uls battery?

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SJA

Joined: 22 Jan 2006
Posts: 5

Posted: Sat Mar 04, 2006 4:57 pm Post subject: 912uls battery?

I have a 912uls.  Have a pre-heat and float charger.  And am still having trouble with cold starting this engine.



What battery are you using with this engine?  Any suggestions?

Thanks.

SJA

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mike.sinclair(at)att.net
Guest

Posted: Sat Mar 04, 2006 9:09 pm Post subject: 912uls battery?

I've been using an Ultrabat 13. Used it with no problems on the 912ul, and now with the 912uls. Have started the uls

with temps as low as 30 degrees and it spins the engine just as well as at the warmer temperatures. Plus it's a

pretty small, light weight package.



Mike Sinclair N701TD



SJA wrote:



 	  Quote: 	
		   



 I have a 912uls.  Have a pre-heat and float charger.  And am still having trouble with cold starting this engine.



 What battery are you using with this engine?  Any suggestions?

 Thanks.

 SJA



 Read this topic online here:



 http://forums.matronics.com/viewtopic.php?p=19586#19586

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Bob Griffin

Joined: 22 Jan 2006
Posts: 34
Location: Slingerlands,NY

Posted: Mon Mar 06, 2006 4:04 am Post subject: 912uls battery?

Hi SJA and gang,  is your trouble starting the 912 a "cranking issue" or a "not starting "issue? One thing I was going to through out is that the manual says that the throttle must be at "idle position for the "cold starting sequence" to be activated. (something to do with the carburetors)?

 Fly Safe

 Bob Griffin

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_________________
Fly Safe
Bob Griffin
Slingerlands, NY

SJA

Joined: 22 Jan 2006
Posts: 5

Posted: Mon Mar 06, 2006 6:23 am Post subject: Re: 912uls battery?

Thanks for the replys.



The battery I have is a motorcycle battery:  has 300 cca (at) 70 degrees, but that goes south of course at colder temps. It's an "Extreme" brand. The battery box is small (3.5x 6.0 x 7.0H)  ROtax manual says at least 16ah, this battery is 18ah  The battery is new in Dec.



I know the ignition takes a lot of juice to spin (I dont have the HD starter) and that the engine has to go to 300rpm to start. When I try to start it, voltmeter says `13.9 or so.  After the first or second crank, it drops to 10.5.   And then we're done.   This week Im going to jump the battery and see what happens.

Any further suggestions about brand of battery?  Im looking at the Odyssey 680.  



Thanks.

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nyterminat(at)aol.com
Guest

Posted: Mon Mar 06, 2006 2:41 pm Post subject: 912uls battery?

I am using the Odessey 680 and have no problems with cold weather starts. I am also using Mobile One motorcycle oil.

  

 Bob Spudis

 N701ZX/912S

 do not archive 

 

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scrimm

Joined: 09 Jan 2006
Posts: 81
Location: Gilbert, SC SC99

Posted: Wed Mar 08, 2006 4:40 pm Post subject: 912uls battery?

I just today got my replacement battery, an Xtreme Plus XP12-18 from Apex

Battery, a sealed gel cell, www.apexbattery.com.  The cost including

shipping was $42.50.



Last Saturday when I went to go fly my Europa with a 912 ULS and hit the

button and it just went click.  I jump started the A/C and ran it for 20

minutes then tried a start again on the battery with the same

results...click.  The battery was five years old and hadn't given me a

moments trouble.



Steve

N42AH

Europa XS



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_________________
Steve Crimm
N42AH

SJA

Joined: 22 Jan 2006
Posts: 5

Posted: Sat Mar 11, 2006 6:46 am Post subject: Re: 912uls battery?

Problem solved.



Got a odyssey 680 and the heavy duty starter installed.  



Cold start, on first crank.



Problem solved.



Thanks to the replyers.

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