Oh no pin pallet movement again

[Neverenoughwatches]

Having good fun with a smiths 542 cal. Low amplitude always is a problem with pp watches. I did discover issues with the balance, friction fitted ruby pin on the wheel was not straight or in line with the guard pin cut out as part of the staff. I did re.align but not staighten the pin. And bottom pivot of the staff was bent, which i nearly had straight with a pivot gadget thingy but i pushed my luck at the end and it broke on me.  Found another balance in my ever growing stock, had the same issue with the ruby pin ? Must be a quality fault, but at least the pivots were good. Problem now is the locking depth on the pins, entry is too deep and the exit is barely holding and jumps off multiple escape teeth as the pin drops onto a heal . I've figured out some angles to bend at and have a rough stetch to work to, looks like a tricky manoeuvre to bend the pins into position . I understand that the end shake needs to be equal for both the escape wheel and the fork so that the lock stays the same throughout positions ( should be equal for other reasons also )  if the pins are going to be not straight ,but no jewels here unfortunately.  Anyone moved pallet pins before that has any tips . It is possible also that the banking pins are not correct, note...we dont move these until we are sure thats the problem 

Edited June 6, 2024 by Neverenoughwatches

[mbwatch]

On 6/6/2024 at 5:32 PM, Neverenoughwatches said:

Found another balance in my ever growing stock, had the same issue with the ruby pin ? Must be a quality fault

Or a design flaw whereby the friction fit impulse pin over time starts to ping out of perpendicular from slamming into the fork. Doesn't help you, but it would be interesting to sample about 10 of them at various ages.

[Neverenoughwatches]

9 minutes ago, mbwatch said:

Or a design flaw whereby the friction fit impulse pin over time starts to ping out of perpendicular from slamming into the fork. Doesn't help you, but it would be interesting to sample about 10 of them at various ages.

Could be that very reason that the ruby pin is bent, i did take a few photos but the issue doesn't show as bad as it is in the flesh. As it happens, i swapped out the balance and didn’t reposition the pallet pins because the tg trace and amplitude is amazing for a pin pallet. 2 + 3 pictures are DD at 1 hr and at 12hrs after fullwind, 4+5 pics  DU 1 hr and  12hrs and 6+7 pics are CD at 1hr and 12hrs 

Just now, Neverenoughwatches said:

Could be that very reason that the ruby pin is bent, i did take a few photos but the issue doesn't show as bad as it is in the flesh. As it happens, i swapped out the balance and didn’t reposition the pallet pins because the tg trace and amplitude is amazing for a pin pallet. 2 + 3 pictures are DD at 1 hr and at 12hrs after fullwind, 4+5 pics  DU 1 hr and  12hrs and 6+7 pics are CD at 1hr and 12hrs 

 

[nevenbekriev]

Hi Rich,

All this only confirms that actually the pin lever escapement is not that bad. This is proven by old Roskopf watches and especially when the escape wheel is made of steel.

Thow everything seems OK on timegrapher, it will be good to eqalize the depth of both pins. Now there is risk that the escapement will unlock if fork recieves random impulce to the center when balance is rotated away from the zero position. I ned to see a photo of the fork in the movement from above to say which will be the best way to do it.

[Neverenoughwatches]

9 hours ago, nevenbekriev said:

Hi Rich,

All this only confirms that actually the pin lever escapement is not that bad. This is proven by old Roskopf watches and especially when the escape wheel is made of steel.

Thow everything seems OK on timegrapher, it will be good to eqalize the depth of both pins. Now there is risk that the escapement will unlock if fork recieves random impulce to the center when balance is rotated away from the zero position. I ned to see a photo of the fork in the movement from above to say which will be the best way to do it.

Thanks Nev DD and DU show fair readings and good amplitude,  the vertical position even though the amplitude was still good the trace was erratic.