I saw Harrison's number one (its replica?) at Greenwich some time ago. It is a dual pendulum, 180 out of phase. I remember a lot of springs. Don
Peter Torry > You could always use the traditional method of piercing saw and files. > Thinking about it I suppose files were the original milling machine. Be > aware that the horological approach is different from the engineering > approach and there are numerous traps waiting for the unwary. Harrison > and Martin's clock B have remarkable performance but could still be > improved by using multiple pendulums to overcome the noise effects for > example a two pendulum clock is performing within 1 second in six months > (so far) so I will have to get the hacksaw out for the three pendulum > version - or is it back to the GPSDO. > > Peter > > > > On 20/04/2015 20:51, Attila Kinali wrote: >> On Mon, 20 Apr 2015 09:59:06 +0200 >> Attila Kinali <att...@kinali.ch> wrote: >> >>>> Mechanical, yes. Home brew, no. It is an absolutely stunning clock, >>>> both in beauty and performance. >>> Given the fact that a CNC milling machine can be bought quite cheaply >>> today, i would say that homebrew is easily possible. All you need >>> is a good understanding on different materials and how to machine them. >>> (This can be aquired using various machining books out there) >> Just to make sure there is no misunderstanding. What I ment here >> was, that once you have the plans, machining the parts and building >> the watch is easy. Comming up with a good plan is still hard. >> >> Attila Kinali >> > > _______________________________________________ > time-nuts mailing list -- time-nuts@febo.com > To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts > and follow the instructions there. > > -- "Noli sinere nothos te opprimere" Dr. Don Latham AJ7LL Six Mile Systems LLC 17850 Six Mile Road Huson, MT, 59846 mail: POBox 404 Frenchtown MT 59834-0404 VOX 406-626-4304 CEL 406-241-5093 Skype: buffler2 www.lightningforensics.com www.sixmilesystems.com _______________________________________________ time-nuts mailing list -- time-nuts@febo.com To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there.