FLywheels timing and keyways

[FPMXer]

Lets talk about flywheel timing marks and the crankshaft keyway. What is the correlation between the two if the mag/flywheel is full of magnets? I have an 84' KXT 250 T3 that I'm in the process of getting it running so I can sell it. It has fuel and compression sitting at 160 psi. The ignition system is my problem. POS stator that is gonna be replaced with a new Moose stator when it arrives and I also scored a stock coil. The flywheel I pulled of the bike is from a KDX 200 per John Swinehart. So if anyone can shed some light on the difference in the timing marks on a smoker with the keyway enlighten us. I know how it all works on a 4 stroke but wonder about the smoker engines. I know you can change the stator plate with the slots provided but only a few degrees.

To me if the flywheel is full of magnets you should be able to simply secure the stator plate to the case halve and bolt the flywheel to the crank and be good to go! I know you can get offset keys to advance or retard the timing on a smoker.

Some of you will scratch your heads reading this wondering WTF I'm talking about but someone here knows what I'm talking about and can explain it in plain english for the rest of us.

[jeswinehart]

Yeah, 4 magnets. 2 south pole + 2 north pole sitting opposite of each other.

[jeswinehart]

You can check polaritys with a compass.
And a wee bit of Google searching on how too

[jeswinehart]

The "push" magnets are south pole.
The "pull" magnets are north pole.
One of the kdx versions have those placements 180 degree off from kxt.
The other 2 types of kdx are simply clocked different.
If wrong placenta you will still have spark,,,, just at wrong time.

[FPMXer]

Push pull magnets? I can stick a pair of scissors opened up inside and it pulls the same all the way around the flywheel.

[jeswinehart]

Use another magnet to test. Same side of that magnet each time. You will need to know which polarity side of that magnet.

[FPMXer]

Use another magnet to test. Same side of that magnet each time. You will need to know which polarity side of that magnet.

That makes sense with another magnet. I'll find one and try it. Is there a way to know of the magneto magnets are weak? Should a screwdriver stay stuck to the magnets in a magneto?

[jeswinehart]

You will be able to tell weakness using a magnet. If one pulls or pushes alot less then the one across from it you will be able to tell.

[barnett468]

Is there a way to know of the magneto magnets are weak? Should a screwdriver stay stuck to the magnets in a magneto?

1. it is not easy to tell if they are weaker than they were when they were new unless you have a very weak one to compare to a new one because the factory does not list the amount of "magnetism" the magnets came with.

2. yes a screw driver should stick fairly well to the magnets.

3. it is possible to get magnets re-magnetized . see the site below.

https://www.scooterwest.com/item_det...gnetizing/4045


PREVIOUS KAWASAKI INTERNATIONAL R & D PROJECT ENGINEER AND ATV DEPARTMENT SUPERVISOR

[christph]

A woodruff key makes timing easy. The PVL ignitions don't have one, which is why you have to use a timing gauge to install them.

[FPMXer]

I've seen scooterwest's site a while back. I'm glad my bike has the woodruff key as most do anyway.

[jeswinehart]

Magnetism strength for Tecate flywheels is 3.5 MGOE if you happen to need that info Barnett,,,,

[barnett468]

Magnetism strength for Tecate flywheels is 3.5 MGOE if you happen to need that info Barnett,,,,

xlnt, thanks . I figured if anyone had the info you would.



PREVIOUS KAWASAKI INTERNATIONAL R & D PROJECT ENGINEER AND ATV DEPARTMENT SUPERVISOR

[FPMXer]

Magnetism strength for Tecate flywheels is 3.5 MGOE if you happen to need that info Barnett,,,,

How does someone measure that?

[jeswinehart]

I called the company I placed a sizable dollar amount of a order for those magnets. My guy sounded kinda quizzical about my quistion : ).
He had the info jotted down on my order alrighty, right down to custom mold specifics.
These (and basically all cycle flywheel magnets subject to high heat) are ceramic. That just happens to be the number they get "zapped" at.
Not much strength really when measured against neo-deoam (sp?) Or the sevral other types of materials that can be made a magnet and "zapped" to different degree,,,, kinda surprised me since I had these tecate magnets marry them selves together with force enough to break in half on bench (bad day in garage for sure !).
So yeah, own a mold, rights with this company for tecate magnets ~ cool. Ain't gonna be scrounging for the no longer.
I am hoping for a 5 year payback on my investment,,,, we shall see. Dam sure want to be the Tecate flywheel go too guy ! KDX bike + Polaris too.
Heck of a hobby ehh