Waltham Automatic Weight Securing Problem

[Waggy]

Good day,

I have restored the Waltham in the picture below and it is working well and keeping good time... however... I have a problem with the weight for the automatic works. The weight is secured by a strange type of c-clip and I didn't pay enough attention when I removed it, hence the whole weight drops off the post from time to time and you can sometimes hear the weight spinning so obviously I haven't assembled correctly. I have tried re-assembling a few times with no improvement, but I am wary as over working the c-clip could fatigue it and break it and then I am in trouble. Does anyone have experience of this type of securing clip... any tips suggestions?

Thanks.

Edited February 15, 2023 by Waggy
Spelling!

[JohnR725]

I'm sure someone will come along in a moment and explain how to do that particular clip. But in the meantime let's figure out what you really have because it's not a Waltham.

Always one of the confusing things for identifying watches are the name on the dial does not necessarily represent who made the movements. Companies will purchase movements from suppliers put their names on the dial the case even the automatic weight but they're not necessarily the people who made the movements.

Usually the most common place where you find the movement identification is under the balance wheel. There usually be sometimes a symbol or letters representing the company and then a number. Because we figure out who actually made this we might build to find technical information if We are lucky.

9 minutes ago, Waggy said:

you can sometimes hear the weight spinning so obviously I

Now on some typically more modern watches you can hear the weight spinning when the automatic parts aren't working right.

[Waggy]

Thanks for the advice, I did take some pictures during disassembly and managed to capture the movement information (FHF 905 I think).

Edited February 15, 2023 by Waggy

[JohnR725]

37 minutes ago, Waggy said:

(FHF 905 I

One of the problems with getting tech sheets and the material house are the purpose of them is for parts identification so while we get a parts list we do not get The technical aspects. 

 

http://www.ranfft.de/cgi-bin/bidfun-db.cgi?10&ranfft&&2uswk&FHF_905

 

775_fhf905.pdf

[Nucejoe]

Not an in_house Waltham, but Swiss fhf 905.

The C clip is correctly installed  per the picture, go to  fhf 905 ranfft to see picture of a good C clip installed. 

The C clip itself  or the axle might be worn.  

Rgds

[rossjackson01]

Waggy

These any use?

https://www.youtube.com/watch?v=mAc3SKLhnV4  1:50 time

https://www.youtube.com/watch?v=7giZKwp5b1Y

Regards

Ross

 

Edited February 15, 2023 by rossjackson01

[RichardHarris123]

I would call it a "circlip", both ranfft and the tech sheet show only one hole.