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Re: Gruen 460 Auto Bumper [message #5329 is a reply to message #5328]

Wed, 25 March 2015 01:44

Gary
Messages: 2108
Registered: May 2013
Location: Left Coast

Gruen Authority
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Out of the Gruen course in wristwatch repair, the New Gruen Auto-wind technical bulletin states: "The complete winding will be executed through the natural movements of the arm in 3 to 4 hours' time-". "Once thoroughly wound the watch is provided with a power reserve of approximately 32-35 hours' running time."

There are some really good testing scenarios for auto-winds in this book, too much to type out here.

Hope that helps.

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[Message index]

		Gruen 460 Auto Bumper By: Timeticker on Wed, 25 March 2015 00:44
		Re: Gruen 460 Auto Bumper By: Gary on Wed, 25 March 2015 01:44
		Re: Gruen 460 Auto Bumper By: Thojil on Wed, 25 March 2015 12:27
		Re: Gruen 460 Auto Bumper By: JackW on Fri, 27 March 2015 19:33
		Re: Gruen 460 Auto Bumper By: Gary on Fri, 27 March 2015 20:19
		Re: Gruen 460 Auto Bumper By: Timeticker on Sat, 28 March 2015 00:44
		Re: Gruen 460 Auto Bumper By: Timeticker on Sat, 28 March 2015 00:45
		Re: Gruen 460 Auto Bumper By: Thojil on Sat, 28 March 2015 18:00
		Re: Gruen 460 Auto Bumper By: Timeticker on Sat, 28 March 2015 22:36
		Re: Gruen 460 Auto Bumper By: Thojil on Mon, 30 March 2015 18:06
		Re: Gruen 460 Auto Bumper By: Timeticker on Fri, 03 April 2015 23:17
		Re: Gruen 460 Auto Bumper By: Timeticker on Tue, 07 April 2015 00:07

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