Electrosport Stator after 250 miles

[posplayr]

I spent quite a bit of time yesterday and today pondering the issue. I had been looking at various ways to dump power into frame mounted resistors, both on the R/R output side as well as the AC side. All of this in an attempt to reduce the amount of power that the stator had to dump whenthe r/r was in regulation. However, one thing that I had apparently been wrong about was the amount of power that this Permenant Magnet(PM) motor puts out.

Apparantly the output voltage is very closely approximated by the being proportional to RPM and therefore the power increases to the square of the RPM. That means if the output is approximately 250 watts by 2500 RPM, it is at 500,750 and 1000 watts at 5K,7.5K and 10K RPM respectively.

So running at elevated RPM for sustained periods causes over heating. My first 250 miles the subject of this thread were at pretty high sustained RPM for a good portion.

My OEM R/R that the PO installed was also burnt (it may have been aftermarket but the PO had it installed at a dealer). This new electrosport you have seen.

There a couple of options to try.

1.) change to a Kawasaki stator replacement
2.) Improve oil flow to the stator by directly spraying a supplu from the rear distribution block.

I'll probably do both. Below is a description of the Kawazaki stator. I suspect that these use smaller wires and so dont generate the same amount of current.


Bill Chef13660 has been using a Kawasaki Stator for some time now in his bike and when he swapped it out recently to do his BB, he said there was no change to the coloration of the stator.

Here is a cross reference I got from Dennis Kirk looking up the model crossed to an 83 GS1100ED.

Part 201208 fits the following machines:
1981 Kawasaki KZ550A
1982 Kawasaki KZ550A
1983 Kawasaki KZ550A
1981 Kawasaki KZ550C Ltd
1982 Kawasaki KZ550C Ltd
1983 Kawasaki KZ550C Ltd
1981 Kawasaki KZ550D GPz
1983 Kawasaki KZ550F Spectre
1982 Kawasaki KZ550H GPz
1983 Kawasaki KZ550H GPz
1983 Kawasaki KZ550M Ltd
1982 Kawasaki KZ750N Spectre
1983 Kawasaki KZ750N Spectre
1984 Kawasaki ZX550A GPz
1985 Kawasaki ZX550A GPz
I just bought this used one. See how nice the color is?


http://cgi.ebay.com/ebaymotors/ws/eB...K%3AMEWNX%3AIT

[boontonmike]

Been researching the electrics in my bike for a couple days now and this post caught my attention. i'm bringing this one back from the dead because I had an idea and wanted some input.

I have the oil cooler where the lines come from the rear block like others. I was thinking that instead of having the return line dump into the top of the block back to that fitting; hypothetically I could reroute the return line from the cooler to a new fitting dumping directly onto the stator. Not only would this provide oil to cool the stator, but it would also be precooled oil coming straight out of the cooler unit. I don't see any negatives to this setup as the oil still dumps back into the bottom end either way.

I'm in the works on doing a whole new electrical system and was just browsing ways to protect it during high RPM usage and this seems like it would be an easy way to help eliminate some heat.

Edit: (another thought popped up)

I have removed my starter and thus have the port where the starter went through to the starter gear. Now I can plug that up, but I was thinking if it would benefit shedding heat from the stator to incorporate a large breather there. I eventually want to shorten up that side case for case to road clearance but that shouldn't hinder any of these other ideas.