antishock landeron

[gary17]

Hey guys

Whats the difference between shock proof and super shock resist when ordering a balance complete I need 1 for a landeron 48 and one for a landeron 149. I know there not inca.

The choice i have is ordinary or shockproof or super shock resist. please open pic and see. Also i would like to order some balance staffs to try and save a few other balances. But what size. I cannot measure them as the pivots are broke. so how do i know what size i need. And of course they do not all break in the same place.

cheers

gary

[Klassiker]

Your picture is not showing a shockproofed balance, so I guess it must be the "ordinary" that you need. Super Shock Resist is a shockproof system where the hole jewel is mounted in a spiral spring to provide the radial absorbtion. The end-stones are sprung separately. Have a look at this German Wikipedia entry:

https://de.wikipedia.org/wiki/Stoßsicherung

There's a simple rule for estimating the length of broken pivots but...I can't remember it.

[gary17]

Cheers

Klass i have noted and read the page thank you

gary

[Nucejoe]

Hi Gary,  Go to www.balancestaffs.com , scrol the of calibers down to landeron, find these calibers you want, it also shows all dimensions of staff on a diagram . No need to measure the broken ones.

[Poljot]

1 hour ago, gary17 said:

Hey guys

Whats the difference between shock proof and super shock resist when ordering a balance complete I need 1 for a landeron 48 and one for a landeron 149. I know there not inca.

The choice i have is ordinary or shockproof or super shock resist. please open pic and see. Also i would like to order some balance staffs to try and save a few other balances. But what size. I cannot measure them as the pivots are broke. so how do i know what size i need. And of course they do not all break in the same place.

cheers

gary

 

It's simple:

- ordinary

- get your trusted tools of your choice to remove and measure your existing Staffs. Do yourself a favour - do not break the "other" side pivot during staff removal process. This will help you to get more accurate "A" estimate

- measure B, J, G, K, estimate A and then cross reference this "alphabet" with the catalogue entries for "ordinary" Staffs for each calibre (see example below). Voila.

 

Edited December 5, 2020 by Poljot

[watchweasol]

Hi Gary to help you on your way, I have attached the  tech sheets for the Landerton 48    148 and 149 as the 149 is based on the 148 there may be one or two differences  hence both tech sheets.    You are getting plenty of advice so will not interfear          cheers

Landeron 48 (5).pdf Landeron 148.pdf Landeron 149, 189.pdf

[gary17]

Thanks everyone its appreciated.

I am going to get 3 ( BS3312) tomorrow unless someone tells me different in the mean time.

cheers

again

gary