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GSX1100G alternator ?

  • Thread starter Thread starter dr_fosg8
  • Start date Start date
D

dr_fosg8

Guest
Ok, in a previous post I asked for opinions on the 1991-93 gsx1100g. Things to look out for etc. Anyway the fellow called back and accepted my offer so I am supposed to go pick it up Friday night and I am wanting to do a check of the battery/charging system before I ride it home( I know should have done this on the previous visit ).

So is the procedure for a bike with an alternator the same as for bikes with a stator? Thanks for the help folks.:D
 
dr_fosg8 said:
Ok, in a previous post I asked for opinions on the 1991-93 gsx1100g. Things to look out for etc. Anyway the fellow called back and accepted my offer so I am supposed to go pick it up Friday night and I am wanting to do a check of the battery/charging system before I ride it home( I know should have done this on the previous visit ).

So is the procedure for a bike with an alternator the same as for bikes with a stator? Thanks for the help folks.:D
Click to expand...
These have an alternator like a car. revolving field controlled by regulator to boost output at low speeds but limit output at high speeds. A simple test would be to hook up voltmeter to battery before starting -voltage should be 12.5 v. Start it up and voltage should climb quickly to 14 + , proving that the alternator system is producing current- how much? who knows.
Is this a key test for you to buy a bike?
 
Ok, thanks. That was what I was looking for. So the alternator should be making full charging voltage even at idle?
 
dr_fosg8 said:
Ok, thanks. That was what I was looking for. So the alternator should be making full charging voltage even at idle?
Click to expand...
Certainly above 1500 rpm, you will probably see 14 volts, but you're asking alot at idle. This alternator seems to be driven directly off crankshaft ( I've never seen this model); in a car ,a pulley gears up alternator speed maybe two times, so a car alternator can really put out juice at idle. If you blip throttle up to 2000 rpm's, you should see a spike in voltage almost immediately.
 
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