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flat battery cause of hard starting?

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hazza
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Joined: 28 Sep 2005
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PostPosted: 18:03 - 02 Sep 2007    Post subject: flat battery cause of hard starting? Reply with quote
not as stupid as i sound i hope, does my rxs 100 need a decent battery to start or is it bypassed straight to the coil?

basically after being layed up for almost a year the battery is flat, it takes alot of kicking to get it into life but once theres a little bit of power in the battery its fine (the dash lights come on when the ignition is turned on)
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3 Honda NC50's(Sold)-->'72 Puch Maxi S (Sold, want it back!)--> '90 Yamaha RXS 100 (Stolen)--> '87 Honda Cub 90(Sold) --> '95 Kawasaki Eliminator (Sold) --> '98 Bandit 600 (Sold) -->'07 SV650S (Current)
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Lanny
Renault 5 Driver



Joined: 23 Jul 2007
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PostPosted: 18:12 - 02 Sep 2007    Post subject: Reply with quote
I`ve got an RXS100 that I don`t use, so the battery was tatered

It played havoc with the lights and the indicators

I put a new battery on and everything was happy again
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Timmeh
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Joined: 01 Nov 2006
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PostPosted: 20:10 - 02 Sep 2007    Post subject: Re: flat battery cause of hard starting? Reply with quote
hazza wrote:
not as stupid as i sound i hope, does my rxs 100 need a decent battery to start or is it bypassed straight to the coil?


Nope. The battery forms part of the circuit. When you kick it over the generator spins and sends a tiny bit of current into the battery. At the same time the ignition electronics, coil, and CDI take power out of the battery to do their thing and make a spark.

The best way to check if a battery is working is to take it off the bike and to put it onto a trickle charger. If, after a few hours, the battery gets hot, then it's mullered.

Do this in a ventilated area because the battery might give off tons of hydrogen, which is very explosive.
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hazza
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Joined: 28 Sep 2005
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PostPosted: 20:35 - 02 Sep 2007    Post subject: Reply with quote
so does a battery in poor conditionmake starting very difficult?


thanks for any replies
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3 Honda NC50's(Sold)-->'72 Puch Maxi S (Sold, want it back!)--> '90 Yamaha RXS 100 (Stolen)--> '87 Honda Cub 90(Sold) --> '95 Kawasaki Eliminator (Sold) --> '98 Bandit 600 (Sold) -->'07 SV650S (Current)
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Timmeh
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Joined: 01 Nov 2006
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PostPosted: 20:38 - 02 Sep 2007    Post subject: Reply with quote
hazza wrote:
so does a battery in poor conditionmake starting very difficult?


well yeah. If the battery's in shit state then the circuit's continuity is broken. You always need a tiny bit of charge to get it to start. Sometimes all the current drains of it and the lead plates get attacked by the acid. This is called a deep discharge.

It would be near-on impossible to start, because the coil/cdi would be trying to take more current out than what you were putting it in by using the kickstart.

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GSXR400 x2 | '94 RVF400 | '93 TZR125 4DL (again)
20:22:30 BLUEX5: i would love to be forced to undergo a**l plugging with different sizes
20:48:18 Temeluchus: comp you hunk of smouldering homos3x you
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hazza
World Chat Champion



Joined: 28 Sep 2005
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PostPosted: 22:17 - 02 Sep 2007    Post subject: Reply with quote
cheers mate, i wa sjust curious because ive just done a full rebuild on it and thought something may still be wrong!

having previously owned to OLD mopeds which dont require the battery to start i was interested to see if this was the same, being 6 volt system and all.


cheers Thumbs Up
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3 Honda NC50's(Sold)-->'72 Puch Maxi S (Sold, want it back!)--> '90 Yamaha RXS 100 (Stolen)--> '87 Honda Cub 90(Sold) --> '95 Kawasaki Eliminator (Sold) --> '98 Bandit 600 (Sold) -->'07 SV650S (Current)
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