Cylinder escapement--question about amplitude

[LittleWatchShop]

I am working on an AS 960 with a cylinder escapement.  By observation (not by machine) the escape wheel does not have much amplitude.

Given that it is a cylinder escapement, is the amplitude less than with a pallet fork escapement?

[oldhippy]

You wont get the same action as an escapement with pallets. Have you looked for signs of wear on the cylinder.  

[LittleWatchShop]

8 minutes ago, oldhippy said:

You wont get the same action as an escapement with pallets. Have you looked for signs of wear on the cylinder.  

I have not looked at the cylinder.  I have done a careful inspection of both balance pivots under magnification.  I have also inspected the escape wheel in the same manner.  They were fine.

Now, I will take a look at the cylinder. 

[jdm]

1 hour ago, LittleWatchShop said:

Given that it is a cylinder escapement, is the amplitude less than with a pallet fork escapement?

Of course it is much less. Below an answer provided by Google search:

a bit more than 90° is quite normal. With more than 180° the escapement would even block, and therefore almost all have curb pins on balance wheel and under the cock, which prevent exceeding 180°. Moreover most movements have dots near the periphery (three on your movement) which allow to check the amplitude. The curb pin is visible when the balance changes its direction, and comparing this position with the dots gives an estimate of the amplitude.

Regards, Roland Ranfft

https://www.watchuseek.com/threads/question-cylinder-escapement-balance-amplitudes.858325/post-6297185

[Nucejoe]

Question, 

How are cylinder escapements supposed to be lubricated? 

 

[jdm]

6 minutes ago, Nucejoe said:

How are cylinder escapements supposed to be lubricated? 

Have a read of a previous discussion:

 

[LittleWatchShop]

I looked at the cylinder under high magnification and see nothing that stands out as a problem.

[oldhippy]

14 hours ago, jdm said:

Have a read of a previous discussion:

 

Apart from oiling the pivots in the normal way you just oil the teeth of the escape wheel I would oil every other tooth using a good pocket watch oil. Do not oil the cylinder or the inside of the cylinder. Are the tips of the cylinder blunt or rounded off. Many cylinders have very poor action, how is the time keeping?