Monday, September 19, 2011

Resistance is futile ...or too great, either way it won't run.

The GL1000 has a ballast resistor which ensures the ignition coils get the proper voltage at startup and during normal operation. 
When the starter motor is engaged the resistor is bypassed because the starter will draw so much current from the battery, that the coils will naturally get the 7-9v that they need. 
When the bike is running however, the ballast resistor limits the voltage to the coils so that the otherwise 12v it would be getting is limited to the proper7-9v. This keeps the coils from overheating, the points from detonating or burning up, and the condensers from overworking and failing.

As, it turns out that my ballast resistor is shot. It should read exactly 3Ω when tested.
This one looked a little roasted around the base of the terminals and tested at 3.5Ω.

Rather than source another one from NAPA, I just decided to man up and get a Dyna electronic ignition. 
The Dyna-S supplies the appropriate ballast resistor (different Ω). The only downside to using the included one is that it doesn't fit the stock bracket. This is not a problem if you have a Dremel and file handy. Just shave down the edges on the terminal side of the ballast resistor and the bracket will slide right over.

The only downside to installing this new Dyna-S is that it completely negates all the work I put into getting the stock points set and condensers properly grounded, since all that gets removed.

No comments:

Post a Comment