Running my GN400 without a battery?

Y

Yamanube

New Member
What do I need to do? Got the bike in sort of rough shape but runs and drives. Bike is kickstart only from the factory and it seems to run okay without a battery in it, just want to know if there is something special I should do so I don't ruin any electrical components.
 
I think its an AC CDI similar to SP/DR.
ignition should be fine? (would have to look at sevice manual)
The lights wont like it though as voltage will rise and blow bulbs.
Why dont you fit a small battery?

PJ
 
I like the idea of running no battery, personally I'd use a 10,000uF (thats micro-farad) capacitor in the place of the battery. Exactly the same connections, just a solid state device thats relatively light and small.

Alternatively you could run a small battery. It'll be easier to find, possibly cheaper as well. I'd recommend anything you can find between 1.2Ah and 3Ah - these sizes are small and can be had in sealed units. The 3Ah is generally a lead-acid style, I've run one in my RS125 with full road lighting and electronic start and have had no problems in several thousand miles since fitting. It'll give you a bit of leeway if you have some sort of charging problem, although it is significantly larger than the 1.2Ah sealed unit, which is around 2/3 the size of a chunky mobile phone.

Cheers - boingk
 
http://cgi.ebay.com/12-volt-5-amp-hour-12V-5ah-Sealed-Lead-Acid-Battery-SLA_W0QQitemZ170405987428QQcmdZViewItemQQptZLH_DefaultDomain_0?hash=item27acfd0464
 
boingk said:
I like the idea of running no battery, personally I'd use a 10,000uF (thats micro-farad) capacitor in the place of the battery. Exactly the same connections, just a solid state device thats relatively light and small.

Alternatively you could run a small battery. It'll be easier to find, possibly cheaper as well. I'd recommend anything you can find between 1.2Ah and 3Ah - these sizes are small and can be had in sealed units. The 3Ah is generally a lead-acid style, I've run one in my RS125 with full road lighting and electronic start and have had no problems in several thousand miles since fitting. It'll give you a bit of leeway if you have some sort of charging problem, although it is significantly larger than the 1.2Ah sealed unit, which is around 2/3 the size of a chunky mobile phone.

Cheers - boingk
Click to expand...

Have you checked charging amps?
One thing that concerns me with small batteries, voltage is regulated but amperage is not, push enough amps in suddenly and it could explode battery.

PJ
 
Yeah thats a good point PJ and although I havent checked on my RS125, it seems to be quite happy. I believe that its bigger brother, the RS250, actually came with a 4Ah battery.

The ideal way to work this out would be to approximate current draw and current supply, and see how much surplus current you're looking it. For charging a battery under normal conditions, 10% of its Ah rating is generally fine. What is a figure that starts getting dangerous (producing fair amounts of excess hydrogen)? 20%? More?

- boingk
 
Thanks for all the info guys, a small capacitor would be ideal being that it would be easily hidden. I guess I will have to do some more research when it comes down to it.
 
I have a couple of GN400's...A capacitor is a good idea...They like to blow headlights when revved if there is no battery...Headlights are expensive :mad:
 
You must log in or register to reply here.

DTT Light or Dark

  • DTT Light
    • www.jadusmotorcycleparts.com
    www.lostapostle.ca/
    www.sparckmoto.com

    Spread the Love

    Back
    Top Bottom