Battery sounds dead

[BLUE_ROCKET_RACING]

I have a 2001 drag busa with a 1397 big bore, nlr 2 step and mps auto shift. I can start the bike 5 or 6 times but then the battery sound like it is dead and wont start the bike. I check the volts and there is more that 12. I wait a couple of hours and the bike starts. Or i go down the track once come back to the pits try to start the bike and it wont. Wait a couple of hours starts right up.

 

[mike1180]

It needs 12.7 volts just to fire the injectors.
Sounds like battery time.

 

[dadofthree]

Either a new battery or you need a charging station in your pit between runs. ???

 

[Mr Brown]

Most people with a 1397 run 2 batteries. It's hard to start it on just 1, especially when hot. Stock battery barely has enough power to start it, if you upped the compression that just makes it worse. Do a search on a dual battery set up, if you can't find anything Schnitz racing has a diagram on their website that shows you how to wire them up.

 

[Kento-Moto]

Are you using a stock battery & starter? I have a friend that makes 24 volt system for the starter if your interested.

 

[BLUE_ROCKET_RACING]

Using a fast by gast battery, my buddy is running the same set up and he has no problems.

 

[Mr Brown]

Using a fast by gast battery, my buddy is running the same set up and he has no problems.

Is your compression the same? If so check your stator and rectifier. It's one of those 3 things that's getting weak, and they won't fix themselves....

 

[BLUE_ROCKET_RACING]

It not the rectifer and the battery is getting charged.

 

[Mr Brown]

PM sent

 

[tmpowdercoating]

probally need the 24 volt setup

 

[dadofthree]

Good luck brother

 

[Rayabusa0818]

What sound does a dead battery make...just wondering

Good luck with a new one

 

[GoldenChild]

call me I got the battery for you...