stator replacement / upgrade
Posted October 27, 2006 - 04:21 AM
It appears that I have to replace my stator (03'WR250F) (got over 17 AC volts at my headlight and keep blowing front and rear ac bulbs) so I've been looking around for a fix ..... HID would be great, but just not in the budget ....... Any recommendations?
TrailTech stator replacement:
AC voltage regulator:
Cool dual light setup, without costing a grand!:
http://www.rickystat... light kit.html
Posted October 27, 2006 - 11:48 AM
Posted October 27, 2006 - 12:13 PM
this is a good thread ........
http://www.thumperta...o...ge regulato r
Posted October 27, 2006 - 01:08 PM
The stator has 3 outputs.
2) AC to the reg/rec for ± 60 watts AC for the lights.
3) AC to the reg/rec for ± 25 watts DC for charging the battery.
I'm guessing here, but I think Yamaha's regulator sometimes goes kaput when pushing the AC current well beyond it's 60 watt output. Mine bellied up after using a 100 watts load with the lights and grip warmers. The telltale sign is fried bulbs and/or 17 volts AC regulator output. BTW, the grip warmers are the hot setup at 17 volts, if you don't mind the grips turning to charcoal.
Posted October 27, 2006 - 08:10 PM
Posted October 28, 2006 - 04:19 AM
Ok. Here's the deal. The lights run off AC and the battery is charged off the 25 watt DC magneto but (and here's the catch) the CDI box also needs 12 volts DC from the DC magneto or the bike will not run. So if you do decide to rewire the magneto and go with everything running off DC be aware that if you do fry the regulator or the magneto in this configuration the bike will not run and you will be walking. Not saying it will happen but it is a risk to consider.
25 watt DC magneto? You mean the rectifier/regulator here? Anyhow, a DC rewire looks like something for later, and with a chat with mike at Ricky Stator. For now I just want to get my bike running again, but don't want to further fry anything by doing any riding. ..... Guess I'l get some work done this week without any riding til next weekend ..... ug!
Posted October 28, 2006 - 05:21 AM
Posted October 28, 2006 - 07:17 AM
Yes. The DC magneto and the rectifier/regulator comprise the circuit that charges the battery and supplies 12 volts DC to the CDI.
I have to disagree, both my meter, my reading of the schematic, and what the yamaha manual shows, the magneto is AC, page 6-1 item #13 and it's called "AC magneto" (in yellow). DC isn't created until after the Rectifier/regulator (item 14, in blue). The AC to the headlight is colored green and the DC is colored in red.
.... and true to the second half of what you said, the rectifier/regulator does charge the battery (with DC).
This is of course for a stock bike (in my case the 03WR250F) , with no aftermarket electrical mods done to it.
The confusion I had originally was with where the AC regulator part was and that is actually part of the "Rectifier/regulator" device or item #14.
Posted October 28, 2006 - 12:02 PM