You are right, and not quite so right!  The trouble is that the correct 
rack for a lantern pinion is a cycloid but an involute rack has 
straight-sided teeth, and there are a lot to cut.  Conversely,  A lantern 
pinion might just be the way to get the strength in the pinion teeth.

Bob

At 15:53 25.10.01 -0400, you wrote:
>I have made clocks and wonder why the pinion gear when a lantern gear is 
>so much easier to make.
>Jim Ketcheson
>
>Matt Mengel wrote:
>
>>Hey all,
>>  I am a machinist, and I agree that a cutter for a
>>router would be the easiest way to cut the teeth for
>>the rack.
>
>
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