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 - The Rescue of a Fordson F - by Anthony West. Introduction I live in the UK and have for many years restored Fordson tractors (in the main model N's). I have also restored and shown model F's, E 27N's, Field Marshall Series 2, David Brown Cropmasters and the old rey Fergeson T 20. At one time I had seven restored examples which were shown and used in ploughing matches. As most restorers, I have a number of war stories I can relate on a range of topics that may help other like minded and interested people. Perhaps my first p
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