Reply To: Graham escapement

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david pierce
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Is that path in the middle of the impulse face supposed to be there or was it worn in from the excape wheel teeth? If it was worn in by the excape wheel then the angle is different than the rest of the impulse face. A clock or a watch escape mechanism is the same as any cam pushing against a cam follower. The angle of the cam follower (impulse face) will definately affect the transfer of force from the escape tooth to the pendilum.

david pierceReply To: Graham escapement