Rattlesnake

Hey guys All good info that will help me work through this. The numbers for my bike (on the frame and engine are the same) 444-123144. I was able to find a shop that does electric motor repair. They told me the armature was no good because of the missing wires, so I think I will try and find a suitable replacement. I have some difficulty finding an armature, it seems there are at least two different sizes and of course I must have an odd one. It measures 3 1/4" shy sitting flat as in posted picture, and 3 5/8" diameter, so any help there would be appreciated. What are your guys thoughts on the armature being no good? Thanks fellas.

Blackhat, I do obviously plan on getting a battery for it in a day or two, but I am monkeying around with it a little in the meantime and it does not seem to be producing a spark without the charger on the battery (battery is shot). It does start and run when the charger is connected. Once it is started it will run without the charger as long as the RPMs are kept up, it wants to die if it is allowed to idle for more than a couple seconds and then will not start again (by kickstarter) until the charger is reattached. I did notice the armature has a couple broken wires on the area where the bars connect to the commutator. What problems can this cause? It also has a broken brush. I guess I am concerned about its ability to charge if it can't produce a spark without a battery. Sorry for the rambling, but this system for starting, charging is different than anything I have had before. Ray,

I bought a 75 DT 125 a year ago and been working on it here and there. I am not very familiar with the electrical system on this bike but do have a service manual and am muddling my way through it best I can. It does not have a good battery in it right now so I have to have it hooked up to the charger to run. Should this bike start without a battery when it is kicked or does it have to have a power source to initially start, even when kicked? I am more familiar with the 2 strokes that have a mag. Once I get it started it will stay running without a power source as long as the RPMs are kept up a little. Ray,

Hey all, New member here but have several old Yamaha motorcycles and smowmobiles. Everything I have is old now that I think about it. Look forward to asking lots of questions about various topics. Ray