Modifikovane Amfibije

**skydrummer** · 28.7.2015., 23:02

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The hands came from Raffles Time, and were the result of quite a bit of research and a little modification on my part. I got the idea after seeing a few mods over in Affordables using plongeur-style hands. I already had the idea for a Vostok project using a spare case and movement I had from an earlier project. A bit of digging led me to the following dimensions for pinions on a Vostok 24xx movement.

Hour hand - 1.4mm
Minute hand - .88mm
Seconds hand - .17mm

Armed with these numbers, I proceeded to dig through movements with readily-available aftermarket handsets to see if I could find anything close enough to use on a Vostok.

The seconds hand is the easiest one. The Miyota 8215 (and it's Chinese clone the DG 2813) use a .17mm seconds hand. The minute hand is also easy, since .88mm is within the production tolerances for Seiko and ETA movements. The hour hand is harder, since the Seiko and ETA take 1.5mm hour hands, and the Vostok takes 1.4mm.

With two of the three being an exact match, I asked Ken at Raffles if he would be willing to sell me a handset with ETA hour and minute hands and a Miyota seconds hand. Thankfully, he obliged my oddball request.

Modifying the hour hand to fit was accomplished by very gently squeezing the flange on the hour hand so it closed up by .1mm. I put the hand on the shaft of a screwdriver for this operation, and used a pair of needlenosed pliers for the job. It took me two attempts since I was being very gentle and making sure I didn't close it up too much. Nerve-wracking, but it worked out pretty well.

Vostok mods. - Page 13