Visually differ Inca-block staff from shockproof staff on a landeron 51

[gkmaia]

I recently got a new staff from ebay for a landeron 51

http://www.ranfft.de/cgi-bin/bidfun-db.cgi?10&ranfft&&2uswk&Landeron_51

My landeron is the same as the ranfft example. With just shockproof. Not inca. 

On the image attached. The original staff is the one at the top, with broken pivots. The ones that arrived are the 3 new identical ones. When installing a new one they were too short. Balance wheel touched the pallet cock. Could not spin. 

Then I land on my question. Is it possible to visually discern an incablock staff from a standard shockproof staff just by images? 

They seem to have different pivot bases. The new ones the pivots have very rounded bases. 

 

[Delgetti]

I had that problem with a valjoux 23/72. On the pic above balance with non-inca, below with inca. The diameter and radius of the first shoulder from the pivot is smaller on the inca-version.

 

[praezis]

9 hours ago, gkmaia said:

Is it possible to visually discern an incablock staff from a standard shockproof staff just by images? 

Hello,

there is no "standard shockproof staff", but there are shockproof systems of different brands.
If you look at balancestaff.com, they list 6 different staffs for L51! 
I doubt you can discern by image, but you can by measuring their sizes and compare with those listed.

Frank

[JohnR725]

28 minutes ago, praezis said:

If you look at balancestaff.com, they list 6 different staffs for L51!

Six is a nice number to deal with unlike the link below which has nine different staffs.

http://cgi.julesborel.com/cgi-bin/matcgi2?ref=LAN_51

10 hours ago, gkmaia said:

Then I land on my question. Is it possible to visually discern an incablock staff from a standard shockproof staff just by images? 

The answer is yes. I'm attaching picture notice how the staff has square shoulders as opposed to normal rounded shoulders found on a conventional staff. I also have a link to a video and you'll notice the shoulders are there to keep the staff from going too far individual assembly.

https://youtu.be/FakIAZxcDII

[praezis]

23 hours ago, JohnR725 said:

The answer is yes. I'm attaching picture notice how the staff has square shoulders as opposed to normal rounded shoulders found on a conventional staff.

That is true. Most shockproof staffs have those additonal shoulders.

But if you have to discern e.g. an Incabloc and a Supershock staff, you will be lost by images.

Frank