problem to keep runing barn find bullet 350

[Gibran Kabande]

Hi guys, I just bought a 1997 Bullet 350 barn find 280 kms on it, yes "280"... stored for almost 15 years.

I put on it new oil and gas, a good battery from another bike.... etc. a few kicks on it and starts fine, no problems, but if I disconnect the battery the bike just die; why? it should run?, or I'm wrong?, help me Please.
Regards.
 

[Blltrdr]

Your battery is part of the circuit. Disconnect and you break the circuit.

[ERC]

They definitely won't run without a charged battery.  ERC

[barenekd]

You need to check the charging system. It should run without the battery once it's started.
Bare

[Gibran Kabande]

Thanks all you guys, all the answers have sense... But I'm pretty sure the thing should be like in the cars, once you have the engine running you can replace the battery for another? with out the engine stop...

Bare:
there are some easy way to check the electrical system, which steps to follow?

I appreciate any help.

Regards.

[barenekd]

Quick and dirty. You'll need a electrical multimeter. If you don't have one, they can be gotten fairly cheaply at a variety of places. Harbor Freight, Radio Shack, probably WallyWorld (Walmart).
Put the battery in the bike. Check it's voltage before you start it up. Start it, rev the engine a bit and the voltage should show a definite rise. Static voltage around 12.5V, running, should get 13V-14V. If you dnt' get an increase in voltage, the alternator may not be working, or there could be some problem with wiring. You need to delve deeper into the works to find the answer.
Beyond that,  if you don't have a shop manual, go to Hitchcocks web site and download the one they have there. It's free. Go into the shop manual and follow the guide. http://www.hitchcocksmotorcycles.com/books-manuals-workshop
Bare

[ERC]

The only way a car with a battery won't stop running when the battery is removed is if you have one with a magneto. Maybe that's what you have where you live.  ERC

['45 WD CO]

The charge for the spark plug comes from the ignition coil.  Simply trace your ignition coil to it's source of power.  If its source is the battery, then no, it won't work without the battery, which is the case for my Iron Barrel.

Cheers,  Bill

[Gibran Kabande]

The only way a car with a battery won't stop running when the battery is removed is if you have one with a magneto. Maybe that's what you have where you live.  ERC

Thanks ERC.

[barenekd]

A car alternator requires a battery to keep the coils that generate the electricity charged. A motorcycle alternator uses magnets to do the same thing. The magnets don't turn off with the switch, consquently they will supple a bit of electricity when just kicking the bike over. A car alternator doesn't. If you get the bike started, the alternator will supply all the juice it can regardless of what the battery is doing. That's why battery eliminators will work on a bike. Won't in a car. Also why you can start a bike by pushing it with a dead battery. A car won't. Although it doesn't take much juice in the battery to get some charge outof the alternator, when 0 volts are available the car won't work. 

[Arizoni]

If a motorcycle will run without a battery in the circuit, I wonder why anyone would need to have a battery eliminator installed?

[barenekd]

The battery eliminator is a big condensor that is there to "Hopefully" maintain enough charge to supply enough juice to get a spark going and be able to start the bike without a battery. In my experience they don't work particularly well. They will charge up as you kick, but it's still an iffy operation. It may take 8 or 9 kicks to get the bike started.
Bare