What does this dohicky do? By looker (Read 1,710 times)

[looker]

it's on the end of the green wire that comes from the auto enricher, it has 5w 5ohm on it.
Could it be that it's a resistor to limit the current taken by the enricher so slowing it's function?
Always wondered what it was, but my recent harness strip down revealed it's connection to the enricher.

Mike

[Alleyoop]

Sounds like that is probably what it does limits it from heating to fast and allows for a longer time for the Plunger to Extend. Just Curious How long does yours take before the IDLE starts to drop down from a Cold start. Then we can compare it to ones that do not have that gizmo.
Alleyoop

[looker]

Hi alley,
I thought that may be what it's for, my carb starts to drop of the 'choke' after about 3-4 minutes maybe. It still requires a little throttle play to stop it dieing for 30 seconds or so. I'm sure when the scoot was new the enricher took longer to drop, so I actually put on a new one of these resistors today but it still operates the same, enricher is also new.
Have adjusted the, what's it called?, the air fuel ratio screw? to get the best idle speed when it's warm. Once it's warm it idles @ about 1750-1800 rpm.
May need to play around with it a bit more.

[sprocket]

It is a ballast resistor...

it has the property of increasing in resistance as current flowing through it increases, and decreasing in resistance as current decreases. Therefore the ballast resistor tends to maintain a constant current flowing through it, despite variations in applied voltage or changes in the rest of the circuit. The resistance changes as the resistor heats up and cools down.

In effect it keeps the system's voltage at around ~ 13.5 volts for the electrical system. Some scooters use then some don't.

They are used in a wide range of electrical items like florescent tubes etc...

Alley's probably right.. it is to maintain constant voltage to the enricher, but it could also be wired so that the headlights etc stay at a constant voltage and don't get brighter when you rev the engine...

[looker]

Makes perfect sense