AX100 CDI/Coil

[Skunk]

Well, the CDI wasn't at fault it seems so I whipped the head and barrel off and found that the motor is in good nick. Reeds are OK, barrel good, piston good and all the bearings feel OK too.

So what does that leave me. I have a miss from mid to top end of the rev range under load.

I haven't changed to carb at all. Can the mixture change over time? Could the colder air really make that much difference?

HELP!

[k14]

Well from my 125GP experience, and I think that they would probably be more susceptible to atmospheric conditions than an ax?? A 10-15 or even 25 degree temperature change shouldn't have much of a difference on a setup. A high rpm miss does sound electrical. I don't know the history of the problem but are you sure the coils are sweet? Some can be fine till they are put under load and then break down.

[Skunk]

I've swapped the original coil/CDI out with one from a running RG50. No difference in performance at all. The carb is spitting back a little (I get fuel on the frame spine). I've replaced the plug twice (no difference). The stator reads OK on a multimeter but I'll try that as well when I can get one.

[nudemetalz]

Have you got an identical carb you can try to at least rule it out as a cause ?

[Skunk]

No. This one is off a KR250A. Jetted and float level set for this engine.

[koba]

I've swapped the original coil/CDI out with one from a running RG50. No difference in performance at all.

Did you swap the rotor bit too?
Im just guessing here but maybe the magnetic bits in it could be poked or somthing?
Dunno if thats possible, just thinking out loud.

[Skunk]

Did you swap the rotor bit too?
Im just guessing here but maybe the magnetic bits in it could be poked or somthing?
Dunno if thats possible, just thinking out loud.

The flywheel... no. Good thought. Time to pillage Pamela.


Again.

[Trudes]

OK I'll go down and explain to her that Uncle Skunk is going to come round and nicely remove some of her bits, but that he's just borrowing them and she won't miss them while he has them (I will not say the R word to her, poor Pamela!)

[nudemetalz]

Had any luck yet, Skunk?

[Skunk]

It's the stator. Hoping Quallman's works now.
I've sent mine to be rewound but that's not looking good - no wire in stock or manufactured anymore.

Yes F5 Dave, you were right but I started at the easiest and cheapest... Doh!