Quote:
Originally Posted by JWL
It would be a long explanation to describe how it was done. First the grinding is done with the end face of the rock. The electric tool has a long snout to provide clearance for crankshaft counterweights. There are 2 types of drive systems for rotating the crankshaft during the regrind. One is a set of motorized rollers for a rear(drive) wheel and the other is a starter replacement driving system for automatic transmission cars. The operator must find areas of the journal which are "round" usually involving some hand filing and sanding to accomplish. Even a badly galled or spalled journal will have small areas outside of the rod contact area to use. There is a hinged/jointed device, like a claw, attached to the grinder motor which over reaches the journal and provides the support and a guide for keeping it round. There are more details but this might give you some idea.
Obviously small cuts are the norm but it actually worked reasonably well.
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Thanks JWL! One really has to appreciate the innovations and ingenuity that our forefathers applied in figuring out how to solve problems such as this. We had some really good entrepreneurs now didn't we! I can't imagine using such a machine, but I'd sure like to see one in action.