Parachrom Blue Hairspring

[kenkelvin]

hi

Answer is here
http://www.rolexreferencepage.com/pa...parachrom.html

hi thanks alot. after seeing the reprt, also dono which series have the new blue parachrom spring. wait buy wrong siong. Daytona lei not some cheap watch

[wean_sg]

Hello,

My daytona has the parachrom hairspring (as in all daytonas with calibre 4130), not the parachrom blu hairspring. What's the difference you ask? The parachrom blu is essentially a parachrom hairspring + a slightly thicker oxide coating, thus giving it it's blue colour. The parachrom blu can be found from 2005 onwards (Z series?).

Blu or not, the properties are the same. i.e. Good shock and magnetic resistance, and much less sensitive to temperature variations. That's because the improved properties are due to the new non-ferrous metals used in the hairspring, irregardless of the thickness of the oxide coating.

Here's some text on the Parachrom construction and properties:

After having mastered the fabrication of the ferromagnetic balance-spring in the 1990s, Rolex developed and patented a balance-spring made of a new alloy called Parachrom®. Composed of niobium, zirconium, and oxygen, it has the advantage of being up to ten times more resistant to shocks, and insensitive to magnetic fields.

The research and development work took five years and required the creation of the most advanced techniques. Rolex used its own high-tech methods to create Parachrom® in order to ensure perfect quality, while maintaining complete independence. Unwound, the balance-spring is as fine as a human hair. It is like a 20 cm long ribbon, with a rectangular cross-section of 45 µm x 150 µm (microns). Its fabrication starts by the fusion of niobium and zirconium at a temperature of about 2,300 °C in an oven with electronic bombardment, which was elaborated specifically for this application. A bar measuring 30 cm long and 10 mm in diameter is obtained, which then undergoes a series of operations to create a wire that is 3 km long and 0.1 mm in diameter (the diameter of a hair). Next, the wire is transformed into a long ribbon with a rectangular cross-section that is cut into lengths of 20 cm. Each length is wound into a balance-spring, with its shape fixed by a high temperature thermal treatment in a vacuum.

In 2000, the Parachrom® balance-spring was introduced in Rolex’s Cosmograph Daytona, followed in 2005, by its placement in the brand’s new GMT-Master II. Its blued colour pays homage to the prestige of the watch, and reinforces the stability of the balance-spring’s properties. In fact, in the history of watchmaking, blueing a balance-spring was reserved for the most precise and most exclusive timekeepers.

[tomcatf]

hi thanks alot. after seeing the reprt, also dono which series have the new blue parachrom spring. wait buy wrong siong. Daytona lei not some cheap watch

The value of watch will not be affected because of a spring, is about the supply and demand, buyer wish to sell low and seller wish to push it higher.

Moreover there are not different in performance between the Blue and none blue parachrom spring, the real price different is the movt between the new and old Daytona, as the older Daytona only holds 48hrs of power where the new one holds 72hrs.

[kenkelvin]

The value of watch will not be affected because of a spring, is about the supply and demand, buyer wish to sell low and seller wish to push it higher.

Moreover there are not different in performance between the Blue and none blue parachrom spring, the real price different is the movt between the new and old Daytona, as the older Daytona only holds 48hrs of power where the new one holds 72hrs.

haha so it only something like the power reserve of the watch. then it nothing much. i thought it like different movement or what haha, example 3185 movement or 3186 movement. u mean got buyer here try ask Wean to sell them his daytona cheaper because his is the older version without the new blue parachrom spring? haha

[tomcatf]

haha so it only something like the power reserve of the watch. then it nothing much. i thought it like different movement or what haha, example 3185 movement or 3186 movement. u mean got buyer here try ask Wean to sell them his daytona cheaper because his is the older version without the new blue parachrom spring? haha

You are right most buyer don't bother or don't have the knowledge, so they only focus of price. But as a seller, how are you going to explain the price different between Pre 2000 and Post 2000 Daytona?

For your info, Daytona do not used 3185 or 3186 movt.

GMT II and EXP II use those movt. GMT IIc are all fitted with 3186 movt. However, some of the discont GMT II are fitted with it and that may have some investment value.

[kenkelvin]

hi

There are different in performance between the Blue and none blue parachrom spring...esp for owners who are very very particular about consistency.. I wud say with the Blue ... is an improved version..
How much improvement is entirely appreciated by the owner..

3186 movt.. in discont GMT II ... I believe so far found in Pepsi later version - GMT ll.. Not in GMT II

yah i know, that y i thought Bro wean F series daytona movement is different from Z or M series daytona and i quote gmt2 3185 movement compared to new gmt2 3186 movement. so f series and M series daytona using same movement. but u said those with the blue parachrom spring is the improved version. so am i correct to said only Z series and above daytona have the blue parachrom spring?

[tomcatf]

from 2005, can be late F series.

[kenkelvin]

hi

from 2005, can be late F series.

ok, thanks alot

[AK28]

What hairspring found in sub no date?

What hairspring does a new sub no date has? Is it the same as sub date?

[AK28]

I take it to be parachrom blu is better than the old hairspring? Is it anti- magnetic? Handling magnets shd not be a problem right?