Crown Wheel Click Post Spring Vostok 2416b

[JohnL]

Hi All,

Is there any other part of a Vostok 2409 or 2414 that can be used to replace a crown wheel click post spring? Even when not under tension they appear to be quite mobile little things. Pain in the derrier if it's necessary to get another movement to replace that.

Asking for a friend 

[AndyGSi]

Depending on the diameter you could try making one either from a guitar string on getting the correct size stainless wire as example below.

https://www.wires.co.uk/acatalog/SS0150-316-050.html?srsltid=AfmBOorigqOKGb1fmAYmh-DR-AHosmVBRoY9GH-IO2KOiDRJh7JU5q1EBhs

Edit

Just remembered there's also these that could possibly be modified.

https://www.cousinsuk.com/product/straight-springs-wristwatch

Edited August 21, 2024 by AndyGSi

[JohnL]

13 minutes ago, AndyGSi said:

Depending on the diameter you could try making one either from a guitar string on getting the correct size stainless wire as example below.

https://www.wires.co.uk/acatalog/SS0150-316-050.html?srsltid=AfmBOorigqOKGb1fmAYmh-DR-AHosmVBRoY9GH-IO2KOiDRJh7JU5q1EBhs

Edit

Just remembered there's also these that could possibly be modified.

https://www.cousinsuk.com/product/straight-springs-wristwatch

You are a gentleman and a scholar Sir. Thank you. I had wondered if a yoke spring might work (perhaps a little strong), but a collection of springs is an excellent suggestion. 

[JohnL]

Thank you again Andy for the advice. I got a selection of springs from Cousins and shaped one using a round nose pliers, holding whatever wasn't being manipulated in a pin vise. 

The images below show the second one I made. The first (which was a better fit) joined the original orbiting somewhere in the lower stratosphere. In the bottom right corner of the first image is a similar spring to the one that I modified. The second image shows it after it's been trimmed a bit more, and with a screw (not touching the spring) in to hopefully slow it's progress should it decide to fly. Care should be taken when removing said screw lest it, and the spring, make a break for it. Ask me how I know.

All the springs in the pack were a round profile. The original was, I believe, rectangular. The round profile leads to it springing out like Lady Macbeth going to check the guest room in the morning; particularly when a touch of grease is added.