The type of drive your starter uses depend on a fast start of armature rotation to get the drive to engage. It has an inertia type drive with a helix spline to move the drive into position in the ring gear. The armature has to start very quickly so the drive will slide down the helix and engage the ring gear before it starts to turn with the armature. If the armature starts too slowly or the helix is sticky the drive will start to spin before engaging the ring gear.Running at 12 volts actually makes this type of starter engage better. The down side of the more rapid rotation is that it puts more stress on the spring in the drive when it has to start to turn the engine. On the other hand the same drive is used on an M and many of them have been used for years with 12 volts and have not and broken springs. It is highly unlikely you will ever see it happen on a 100.
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Today's Featured Article - My Ford Golden Jubilee - by Troy Estes. This article is about my '53 Ford Jubilee and a story that starts with taking the tractor to my brother's Starter/Alternator Rebuilding shop for a wiring fix. The generator was shot as well as all the wiring. I dropped off the tractor expecting a transformation from a 6 volt to a 12 volt system utilizing the original generator housing, and a total rewiring of the whole tractor. The front end center pin bushing was worn also so I ask that they replace it if they had time. Well, that�s wha
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