REFLECTOR: battery

[Dave Philipsen]

One thing you could do to troubleshoot your problem is to put a 
voltmeter across the battery terminals while you're cranking. If you 
read above, say 8 volts or so, your battery is probably ok. You can also 
measure voltage right at the starter while cranking and determine how 
much of a voltage drop there is through the wiring. It could even be a 
problem with your master solenoid or starter solenoid.



Lou Stedman wrote:
> The battery is an Interstate, 12 volt, mounted in the nose, with #2 
> stranded wire running all of the way back to the engine. Connections 
> are clean. As long as I have owned this aircraft, starting has been a 
> bit slow. When you first apply power to the started it will hesitate, 
> groan, and then begin to turn the flywheel. Sometimes I will have to 
> let off on the key and try again to get it to turn over. Once that 
> happens the engine will usually start on the first revolution, 
> providing I don't flood it. I have a sky-tec starter, model #149-12LS. 
> I have a battery tender plugged in at all times when the aircraft is 
> in the hanger. Hope this is enough information.
> Lou Stedman
> Velocity N7044Q
> Olean, NY
>
>     ----- Original Message -----
>     *From:* Keith Hallsten <mailto:KeithHallsten at quiknet.com>
>     *To:* 'Velocity Aircraft Owners and Builders list'
>     <mailto:reflector at tvbf.org>
>     *Sent:* Thursday, June 26, 2008 1:30 AM
>     *Subject:* Re: REFLECTOR: battery
>
>     Lou,
>
>     Which battery are you using now? Is the battery in the nose
>     position (under the canard)? Are the battery cables #2 copper with
>     solid, tight end connections? Has starting always been weak, or
>     has it gotten weaker recently?
>
>     Starting problems may be due to the battery (particularly if it’s
>     old or abused), but there are lots of other potential causes.
>     Generally any sealed lead-acid (SLA) battery of moderate size will
>     have plenty of snort to crank an engine, provided it is getting
>     charged. A bit more information is needed to help with diagnosis.
>
>     Keith Hallsten
>
>     ------------------------------------------------------------------------
>
>     *From:* reflector-bounces at tvbf.org
>     [mailto:reflector-bounces at tvbf.org] *On Behalf Of *Lou Stedman
>     *Sent:* Wednesday, June 25, 2008 7:53 PM
>     *To:* Reflector Velocity
>     *Subject:* REFLECTOR: battery
>
>     Hi guys
>
>     I am not happy with the cranking power of my battery. I am turning
>     an LYC io-360, any recommendations?
>
>     Lou Stedman
>     Velocity N7044Q
>     Olean, NY
>
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-- 
Dave Philipsen
Velocity STD-FG
N83DP