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Originally Posted by Max Lobovsky
Can someone explain the purpose of the plastic "top hat" for the CIM modification? Is it some sort of bushing to support the shaft? Is it absolutely neccesary? Do the screws holding it to the carrier gear actually need to transfer much torque, or is it just to press it up to the gear?
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The sole purpose of the tophat is to keep the shifting ring from the second gear stage of the Dewalt transmisssion (which, just for clarity sake, becomes the first stage of the gearbox on the Chiaphua design because the normal first stage is eliminated) from tilting out of alignment.
Normally, the ring from the first gear stage keeps this second ring from tilting, but with the entire first gear stage removed, there is nothing but air to do this.
As to torque, there is no torque needed at all. In fact, there is no reason to have more than 2 screws. We just used 4 because there were four planets on gear stage one, which suggested to us to use 4 screws. Absolutle overkill.
Joe J.