Dead Beat Vs Recoil Escapements

[John T]

Hi Art,
As I understand clock escapements - both the dead beat and the recoil should actually have the same angle between the escape tooth and the impulse so there is no difference here. 

The dead beat has the escape tooth fall on the arc just past the impulse pallet face and the arc of the run-out face is the arc from the pallets so that there is no recoil imparted to the escape wheel.

The Recoil escapement has extended impulse faces such that any excess pendulum movement will impart a recoil to the system.

Since escape wheel teeth are normally give a angle of 20? it would seem to me that you would come very close to changing from dead beat to recoil simply by reversing the orientation of the escape wheel while leaving the impulse pallets as if it were a deadbeat.

Hopefully this photo will explain better that my words.  All I have done is leave the pallets the way they were cut but taken the escape wheel and turned it upside down.  Since this is a fidget I am able to look quite closely and the action and it seem to me that if the pallet face were just slightly longer I would have a recoil escapement.

[John T]

Forgot the photo  :-\

[ArtF]

John:

  Interesting theory..but I suspect youll end up with 90 degree pallet angle, that will cause a dead stop.though I could easily be wrong. :)
Let me know what happens....


Art

[John T]

Hi Art,
Just as a test I've built a small clock mechanism and it definitely will work and will easily run on finger pressure.
John

[ArtF]

John:

Thats excellent. I hadnt ven thought of reversing a deadbeat. Nice thinking out of the box...

Art