MX250a Stator Coils

[BJJ]

Bike has been going well,  just took the flywheel off and notice one of the coils is damaged.



It sticks out way far more than the left coil and has a different winding, so my guess is some goof has put anoter coil in at some stage.  My question to the forum would be,
-are 2 coils reqd for the bike to be firing
-or,  is it just making it through,  even thought there is damage.

I have already heard far to many stories about expensive rewinds,  hence the questions before I decide what the next step is.

[YZ360A]

Hey is that point's I see. Your bike if it is a MX250a should run a internal rotor CDI.

I would say some one has change it to a External fly wheel and points off a dt or something.

This still works fine as you probably have fly wheeled the bike up for more lower range torque.

Cya Adam

[cyclegod]

Your damaged coil is the lighting coil and has most probably been diconnected, the smaller coil is the source coil and that is what powers your ignition. You should just remove the lighting coil, as you siad your bike is running fine so you won't miss it.

[Freakshow]

thats no MX ignition, windings for that dt ign arent hard to get, but in the first instance ditch the lighting coil its taking up space and sucking power.

[BJJ]

Hi Freakshow.  Yes I suppose it raises some questions about my bottom end.
1. Was the DT ignition an afterthought?
2.  how else can I tell if I have a DT bottom end?

The casing has a 364 - and the following numbers are in a different stamp,  the number now matches the frame.  I am sure the 364 looks legit,  but if the rest of the number was a re-stamp,  then the did a very good job in milling/sanding.

[Freakshow]

#64 means its a 250A case, dont mater whats inside, but on the outside you have points, meaning either they are the early 72/73 mx  or for some reasont your ignition shat itself and rather than repairing the bit that went poof probally the coils or the Cdi they just found the Dt or whatever it is from an enduro cheaper and fitted it on, what are the number on the backing plate or flywheel ?  there will be some numbers on it somehwere.  what does the box the wire go to say ? it wont have a CDi box but somthing else where the wires go to will have numbers on it , or better still take a good foto of that, and a front-on foto of your stator/flywheel set up, post it back in here and with in 20 minutes you will have a correct answer.  Now Over to you and theBrains trust