2013 250R overvolting

[Jakobi]

What's the best way to test the regulator off the bike?

I'll drop a filter on the 2010 model and kick it in the guts and see how it behaves today if I get the chance.

[Neil E.]

I think you need a powerstat to really test it (variable voltage AC transformer). You could gradually increase the voltage above 14V and it should hold at about 13V - 14v. Maybe the lack of a battery highlights the problem. The battery typically absorbs small spikes.

[rubber Jonny]

I've tried running my bike from both white and yellow wires from the static just to see what happens. Did wonder if it had been wired incorrectly wrong colours or something. Made no difference at all.

[Neil E.]

Just a note to mention that my "DC with battery" diagram is only meant to show a battery for having some lighting with the engine off. It is not suitable for an estart application.

[Jakobi]

Checked the 2010 model, and it seems to be regulating at 15V from what I can tell (quickly checked).

I'll pull the regulator from this bike and switcharoo it. See what happens next.

[rubber Jonny]

I think it's a intermittent problem. The 15 - 20 volts you see at home are not the big issue I bet it wacks for power for a moment through everything to blow the bulb like that.

[Jakobi]

Mine seems pretty consistantly over volting. 20V isn't a whole load, but its also just cracking the throttle on the stand, which imo is different to holding it pinned at 9500rpm for sustained durations (something I won't test on the stand - too much noise).

[rubber Jonny]

Originally Posted by Jakobi

Mine seems pretty consistantly over volting. 20V isn't a whole load, but its also just cracking the throttle on the stand, which imo is different to holding it pinned at 9500rpm for sustained durations (something I won't test on the stand - too much noise).

That what I mean. Voltage will be different when riding with proper load on engine. Bet it goes over 20 when riding. 20 doesn't seem enough to shatter the glass.

[Jakobi]

Got me stumped. Tried a 3rd OEM reg from my old bike. Still revs up to 20V easily on the stand, and probably much further on the trail. I haven't switched the headlight back on.

I'm just gonna ride it!

[barossi73]

would adding length to the wiring loom or using different weight/resistance wire help drag the volts down?