37 Discussions and CommentsMember since April 15, 2005
Hi:
i am trying to figure out what chronos IWC has made in titanium thus far. So far I can think of the Aquatimer chrono, the Ingenieur AMG chrono, and the GST chrono as the simple 7750 based ones, also the split minute AT chrono, the Jan Ullrich GST special edition a few yrs back (that was a rattrapante, no?) the GST perp calendar chrono and I think they did a 7750 based one for porsche design. And they also did the GST mecaquartz. Am i missing any?
250 Discussions and CommentsMember since Nov. 21, 2001
Titanium chronos by IWC question for the experts..
Scott-san,
Though I'm not an expert, I can mention that PD also had Mechaquartz(ex. PD sportivo 01 Ref. 3720 and PD moonphase Ref. 3742). It carried wonderful Caliber 630/631 designed by Roger Guinard of JLC.
This is just an aside, as to Mechanial chronograph movement based on ETA/Valjoux, I've thought they are best (Especially Cal.7922 and current 79320 with triovis fine regulator) in ETA/Valjoux 7750 based caliber.
The small problem of ETA 7750 was that amplitude of balance wheel will easily down when positions changed. But however, amplitude keeps higher than other movements when Chronograph starts. It owes simple "swinging pinion type" clutch, may be.
It's wise that IWC opt to give higher amplitude to its chronograph movement for more precision. For example, amplitude of Cal. 79320 is over 300-320 degrees. It's not easier than we guess. Cause such high amplitude needs sophisticated (polished) drive trains and better matching between main spring and barrel. Yes these are based on 7750 in physical appearance, but contents are not the same.
But that is another story. As far as I know, the first Titanium chronograph was Ref.3700 (Ca.1978 or 1980?). for me, it's an interesting piece.
37 Discussions and CommentsMember since April 15, 2005
Titanium chronos by IWC question for the experts..
Right the 3700 was the one with integrated pushers made under the porsche design collaboration. That is a mighty rare watch I think and very special considering the time it was made.
Interesting stuff on the 7750 based chronos. I have had nothing but the best experience with IWC's modified 7750s. It is a great movement and IWC only makes it better with their extensive modification. I have a couple (AT chrono and the Inge Chrono and both have been flawless.
i am trying to figure out what chronos IWC has made in titanium thus far. So far I can think of the Aquatimer chrono, the Ingenieur AMG chrono, and the GST chrono as the simple 7750 based ones, also the split minute AT chrono, the Jan Ullrich GST special edition a few yrs back (that was a rattrapante, no?) the GST perp calendar chrono and I think they did a 7750 based one for porsche design. And they also did the GST mecaquartz. Am i missing any?
Thanks,
Scott
Scott-san,
Though I'm not an expert, I can mention that PD also had Mechaquartz(ex. PD sportivo 01 Ref. 3720 and PD moonphase Ref. 3742). It carried wonderful Caliber 630/631 designed by Roger Guinard of JLC.
This is just an aside, as to Mechanial chronograph movement based on ETA/Valjoux, I've thought they are best (Especially Cal.7922 and current 79320 with triovis fine regulator) in ETA/Valjoux 7750 based caliber.
The small problem of ETA 7750 was that amplitude of balance wheel will easily down when positions changed. But however, amplitude keeps higher than other movements when Chronograph starts. It owes simple "swinging pinion type" clutch, may be.
It's wise that IWC opt to give higher amplitude to its chronograph movement for more precision. For example, amplitude of Cal. 79320 is over 300-320 degrees. It's not easier than we guess. Cause such high amplitude needs sophisticated (polished) drive trains and better matching between main spring and barrel. Yes these are based on 7750 in physical appearance, but contents are not the same.
But that is another story. As far as I know, the first Titanium chronograph was Ref.3700 (Ca.1978 or 1980?). for me, it's an interesting piece.
HIROTA, Masayuki
Right the 3700 was the one with integrated pushers made under the porsche design collaboration. That is a mighty rare watch I think and very special considering the time it was made.
Interesting stuff on the 7750 based chronos. I have had nothing but the best experience with IWC's modified 7750s. It is a great movement and IWC only makes it better with their extensive modification. I have a couple (AT chrono and the Inge Chrono and both have been flawless.
Thanks,
Scott