View single post by KenC
 Posted: Sat Feb 23rd, 2008 11:53 am
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KenC



Joined: Sun Sep 4th, 2005
Location: Florida &, Arizona USA
Posts: 11288
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 Poljot uses several hand crankers...the most common "Unitas" type is the Poljot 3105 which has a higher bph and a longer power reserve.  A couple of years ago, actual timing on several 3105 movements in these annals showed power reserves in excess of 60 hours.

The Moljina/Poljot 3603 (same movement) is a much more refined and "prettier" movement, but with a slower bph!

Marc or Tom (pacifichrono) may be able to give more detailed information.

Movement: Poljot 3105 caliber with shock resistant balance, hand-wound, diameter 31 mm, height 5.05 mm, 17 Ruby jewels, 21,600 beats per hour, mean daily rate from -20 to +40 sec/day, 42-hour power reserve.

 

Movement: Molnija 3603 caliber with shock resistant balance, hand-wound, diameter 36mm, height 4.6mm, 18 Ruby jewels, 18,000 beats per hour, 41 hour power reserve.