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Vostock Amphibia Movement 2414a - Mainspring

Moose

By Moose
in Watch Repairs Help & Advice

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Moose WRT Addict

Moose

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Posted (edited)

Hi all.

I am looking to replace a broken mainspring from a 2414A movement, but Ranfft does not show spring dimensions for this movement.

Cousins has "obsoleted" the part it had listed, so no help there. Has anyone ordered a generic replacement mainspring from Cousins and could let me know what size they ordered, and if it was suitable ?

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mikepilk Distinguished Member

mikepilk

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I bought one of those a couple of months ago. Fortunately it didn't need a mainspring. As you say it's not referenced on Cousins, Ranfft or the GR database !  

Easiest thing is to measure what you've got, and hope it hasn't been replaced with a wrong one.

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JohnR725 Distinguished Member

JohnR725

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18 hours ago, mikepilk said:

Easiest thing is to measure what you've got, and hope it hasn't been replaced with a wrong one.

Before taking it out to measure  look at it and see if it looks right? In other words it looks like it's the right width and the proportions filling the barrel look correct. So of casually visually looks right then measure it and that should probably work. But you will note my lack of enthusiasm recently I get a Hamilton pocket watch that the mainspring looked good good enough to reuse but the width of the T  and and the width of the spring was a little narrower that I would like so it didn't work out even if it looked right. The replacement definitely fit better and I didn't have to worry about the end popping out.

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Moose WRT Addict

Moose

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Thanks to both replies.

Well it's out anyway, as it was broken to start with. However it did look to be OK (proportion-wise) so I'm guessing it was/may be original.

The measurements do get a very close match to a one of the generic Cousins springs, so I have taken the chance and ordered one. We will see how that works out.

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  • 3 months later...
Moose WRT Addict

Moose

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Hi Mike.

Yes, after measuring the bits of the old one, I fitted this one and it gives around 40 hours of reserve, so seems a perfect match.

GR Non-Automatic Mainspring 1.25 x .105 x 320 x 9.5

Cousins order code GR3126.

Moose.

Edited by Moose
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VWatchie Distinguished Member

VWatchie

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The best and most affordable option, IMO, is to get a barrel complete from either eBay or Meranom.com. They are usually around $5 each. Unfortunately, non seem to be available as of today.

I'm not 100 % sure, but I believe I've used a Generale Ressorts spring in one of these 2414s having the dimensions:
1.25 x .115 x 320 x 9.5. Cousins code GR3140 (almost twice the price of the spring suggested by @Moosethough 😒)

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