STATOR REWIND
by Burnrider
REMOVING THE STATOR FROM THE BIKE
1 => Remove the seat and left side panelREMOVING THE STATOR FROM THE CASE COVER
1 => Remove the three 4mm allen bolts securing the stator to the outer caseSTRIPPING THE WIRE FROM THE STATOR
1 => Looking at the edge of the stator with both solder contacts facing your chest you can see the first coil is empty. The marks from the allen screws are on the side facing out.REWINDING THE STATOR - THE PARALLEL CONFIGURATION
Before you pull the stator you can order the wire, epoxy, a better regulator, and a new case gasket. The costs are approximately : Wire - $20.00, Epoxy - $20.00, Gasket - $11.00, Baja Designs regulator - $15.00 plus shipping. Good eyes or strong glasses are required to track the wire path around the stator. Even 20 gauge wire is hard and resists forming on the first wrap. It is difficult to make equal layers given the 'hole created on a stator pole for wire entry and wire finish for every wrap. Another way to measure wire might be to remove and measure the existing wire, or wind a coil to spec and remove the wire to measure it's length. I wound all six poles with 5 layers of wire 13 wraps per length of the stator pole. Eight layers of wire, recommended by a XR250 article, looked like too much wire for the KLX stator.
PARALLEL WINDING
For the first set of 3 poles, I started the first pole CCW and left 6" of wire to go to the solder terminal. I wrapped the second pole CW, and the third pole CCW. I left enough wire to get to the solder terminal for the ending wire of the first set of poles
For the second set of 3 poles, I started the first pole CW and left 6" of wire to go to the solder terminal. I wrapped the second pole CCW and the third pole CW. I left enough wire to get to the solder terminal for the ending wire of the second set of poles.
The first three wraps are the most uniform, after that, the are harder to keep flat and even. I cut and scraped the wire to solder 2 wires to each solder terminal to complete the job. The 3M 2216 epoxy spreads easily and flows to finish itself if you rotate the stator and let it drip off both sides equally. The epoxy appears to secure the outside windings from moving and mechanically damaging the insulation.
RESULTS
I connected the beginning wire from poles 1-3 to the bigining wire from poles 4-6. It generated no power. I removed the second set of poles and I got power. I then connected the second set of poles with the start wire from poles 1-3 to the end wire from poles 4-6 to one of the solder terminals. I connected the end wire from poles 1-3 to the start wire of poles 4-6 to the second solder terminal. I got full power from all 6 poles.
I went for broke and two 35 watt headlight bulbs on the bike and started it. They were both very bright. I gassed it maybe a quarter throttle. The light was a little brighter, but nit much. That is 70 watts. I added in the tail light with the same result. A tail light is good for only 5 watts. This gave me 75 watts of bright lighting. INCREDIBLE! Like I knew what I was doing. My goal was to power a 35 watt bulb, the 20 watt hand warmers, and the 5 watt tail light. This configuration should do it. I am now shopping for a good digital multi-tester. When I get one I will load it again and post more accurate results for you.
RECOMMENDATIONS
1 => I would spend some wire wire to wrap a pole, strip it and measure the wire. You can then pull wire off the spool, measure it and mark it with masking tape. It's difficult to keep it neat and count wraps, even though I did my best.6 => There is a lot of information on the web. Go to a Yahoo search and put in "stator winding". It brings up all the private web pages by the Honda guys. I found that all of them had most of the information, but everyone omits something. It leaves you guess what to do next. I used the parallel wiring configuration because the information from some of the XR guys said it gave the most power. They specified eight layers of 20 gauge wire. I took a chance and it worked very well for my needs. I talked to Baja Designs technical section. "Jake" said a parallel configuration would give me more power than I needed. It gave some confidence in the project