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 - Horsepower Defined - by Staff. Indicated Horsepower This represents the power developed in the enine cylinder as obtained from the pressure in the cylinders. This is pressure obtained from an indicator which shows cylinder pressures. Indicated horsepower does not represent the actual useful power delivered by the engine. Brake Horsepower This is the actual horse power delivered by the engine to the shaft. It is equal to the "indicated horsepower" less the friction of the engine. It is useful hor
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