
Audemars Piguet Royal Oak Chronograph RD#5, a Slim Watch along with Big
Ambitions
Reinventing the Chronograph. Audemars Piguet Royal
Oak Extra Thin fake
Audemars Piguet (AP) has redefined the wathe with the Royal Oak " Big Mac"
Ultra-Thin Automatic Flying Tourbillon Chronograph RD#5. Crafted from titanium
and dép?t BMG, this watch, calculating just 8. 1 milimetre thick, houses the
Caliber 8100, a radically brand new interpretation of the chronograph system,
employing a spring rack to gather and store energy. The actual RD#5, the fifth
as well as final model in the " RD" collection, exemplifies the actual
impressive technical sophistication associated with AP, particularly its Le
Locle Manufacture, which started out Renaud & Papi (APRP).
The RD#5 was conceived with the objective of creating an ultra-thin and comfy
chronograph, featuring exceptionally lighting and comfortable pushers, an
immediately jumping minute counter, and also an ultra-thin profile (thanks in
part to peripheral turning technology) while remaining flexible to industrial
haute clocks. It's one of the most technologically fascinating releases of 2025,
along with we'll explore Audemars Piguet's new interpretation of this
chronograph below.
Preliminary Thoughts
Deceptively regular in appearance, yet sharing
the perfect proportions and state-of-the-art band of the iconic " Jumbo, " the
RD#5 is among the most innovative mechanical chronographs recently. Perhaps its
only similar breakthrough in chronograph building is the AgenGraphe, launched
almost a decade ago.
This particular watch was clearly created with two goals in your mind:
slenderness and tactility. This achieves both with excellence. In addition to
enhancing the responsive feel of the pushers, the particular RD#5 also reduces
the peak of the movement by eliminating a layer of the timepiece mechanism,
previously occupied through the hammers and heart-shaped camera, and replacing
it having a rack; this de-layering is comparable to the approach used in
typically the RD#2 perpetual calendar high quality fake watches .
The first time We activated the chronograph, the sensation was both expected
in addition to surprising. Giulio Papi, co-inventor of the RD#5 (and among
today's foremost watchmakers), stated that the chronograph pushers had been as
light as the volume level buttons on an iPhone, an attribute he cited as one of
the inspirations for the watch's design.
Mr. Papi's evaluation of the tactile feel is actually spot-on. The RD#5's
drivers are smaller than most, needing only a light press in order to activate a
timepiece, removing the deep travel of the chronograph. Furthermore, their
responsive feel is smooth as well as crisp, unlike any other time counter on the
market.
But since a chronograph enthusiast, exactly what most captivated me is the
instantaneous jumping minute countertop, a feature also employed by AP watches
in Geneva and also Glashütte.
The particular innovative nature of the RD#5 movement also demonstrates AP's
exceptional achievements in commercial haute horlogerie. Its careful design for
manufacturability (DFM) will be evident in every detail, especially the
extensive use of videos rather than screws to safe the chronograph movement. The
various slender levers, springs, along with connecting rods provide perfect
material for wire-cutting.
Most importantly, Audemars Piguet's patent demonstrates the deterministic
nature of the RD#5 motion, eliminating the need for tedious springtime tension
and cam adjusted adjustments. Ultimately, this movements is unabashedly designed
for contemporary manufacturing, which I find each intriguing and fascinating. In
fact , often the 8100 movement in the RD#4 has two fewer components than the
standard Audemars Piguet automatic chronograph caliber 4401.
The Regal Oak's movement has a different style, resembling the APRP actions
found in the Royal Maple Concept collection and luxurious Richard Mille models.
Typically the extensive skeletonization of the stop-watch levers and connecting
supports, I believe, is intended both for practical weight reduction and
aesthetics. 1 noteworthy detail is the semi-octagonal shape of the chronograph
link, a subtle nod towards the obvious theme. Zenith
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The RD#5 is priced at CHF 260, 000 before tax, a moderate price for a superb
activity featuring a tourbillon and a cutting-edge chronograph. However , its
worth lies in its rarity. Could anniversary edition is limited to be able to 150
pieces, I foresee that other models showcasing the caliber 8100 is going to be
released soon, and ideally, non-tourbillon versions will follow quickly.
RD Selection
In 2015, Audemars Piguet launched its Investigation and
Development (RD) selection with the RD#1 Royal Oak Supersonic Concept,
revolutionizing the moment repeater. In 2016, Audemars Piguet released the RD#2
Royal Oak Ultra-Thin Automatic Perpetual Calendar, which, just 6. 3 mm thicker,
was the thinnest automatic everlasting calendar watch at the time.
Six years later on, the RD#3 introduced the high-amplitude lever escapement
within a flying tourbillon, which was elevated in the 2023 Universelle RD#4. The
RD#4 is an easy-to-operate, self-winding grand complication, computing just 42
mm within diameter. It is named after any Louis-Alice Piguet caliber which AP
supplied to the German born watchmaker Union in the late nineteenth century.
With the RD#5, AP focused on reinventing the wathe mechanism, specifically the
totally reset function.
Often the high-amplitude tourbillon returns for your third time in the RD#5.
The watch itself is constructed from titanium, while the bezel, caseback, and
bracelet middle hyperlinks are made of palladium-bulk metallic cup (BMG). AP
also lately used this material in the Royal Oak Perpetual Calendar, the actual
swan song of Quality and reliability 2120, as well as in several Royal Oak "
Jumbo" versions and special editions.
As its name indicates, Palladium BMG is an different, rather than
crystalline, metal. This will make it more rigid and more difficult than the
polycrystalline forms common of traditional alloys.
The dial, in line with the classic Royal Oak design, features a refined
guilloché design and a midnight blue PVD coating, complemented by strong gold "
bathtub" hours markers and hands. Such as the other limited editions on sale
since 2025, the dial has a distinctive 150th anniversary logo design inspired by
the brand's historic emblem.
However the true allure of the RD#5 lies within its mobility. Caliber 8100 is
equipped with some sort of high-amplitude flying tourbillon, automated winding
with a peripheral oscillatory weight, and a function selectivo crown that
switches among winding and setting, distinctions of many Richard Mille APRP
movements. However , the focus the following is on its novel timepiece
construction.
Adolphe Nicole, a Swiss migration living in London and creator of Nicole
Nielsen, a new movement manufacturer best known with regard to supplying British
watchmakers, developed the modern chronograph around 1840, creating the first
mechanism effective at starting and stopping individually of the movement-unlike
a stopwatch-and using a hammer with a solitary stable position and a
heart-shaped cam to instantly go back to zero. swiss watches replica
Since then, most industry insiders have considered chronograph resetting the
solved problem, typically looking for other solutions only when handy, such as
in certain retrograde chronograph watches.
Typically, the power required to reset a chronograph is introduced into the
view via a pushbutton. On numerous watches, pressing the start/stop button
triggers the recast hammer, which is held in location by a pin (shown inside red
in the image below) and released when the reset to zero button is pressed.
Pressing the start switch is like pulling a bowstring, requiring considerable
force, whilst pressing the reset key is as effortless as tugging a trigger.
Alternatively, the particular resetting force can come through the reset button
itself, whereby it can be quite heavy.
The RD#5 is usually clearly not an ordinary time counter, despite its
appearance initially, featuring a sweeping chronograph secs counter and typical
30-minute and 12-hour totalizers.
Instead of relying on energy from outside the watch, typically the RD#5 uses
three early spring racks to collect and shop energy from the mainspring as the
chronograph is running. This specific energy can be used to reset often the
chronograph or advance the actual hour and minute totalizers.
Conceptually, this really is identical to the ingenious AgenGraphe, which
uses a snail surveillance cams and spring-loaded hammer vertueux to achieve the
same effect, however the execution is completely different.
Reinventing the Chronograph Reset
When the ti chronograph seconds
wheel (light blue in the image below) rotates counterclockwise, its pinion
drives the balance seconds stand (turquoise) to the left, while any weaker
return spring (orange) works to push the tray to the right.
As the seconds rack calèche to the left, it pulls back again the connecting
rod (gray, 50) until the minute enhance gear (pink) falls driving the teeth of
the minute recorders wheel. As mentioned earlier, the particular weaker return
spring issues with the pinion, which pulls the stronger mainspring pressure.
This also replaces the typical anti-jamming spring. When the clutch is
definitely disengaged (the chronograph is actually paused), the red detent
prevents the gear from moving. With no red detent, the come back spring prevails
and earnings the seconds wheel totally to zero, which is the important thing to
the reset mechanism.
The seconds pinion is missing two smile, and another tooth will be shortened.
As the chronograph mere seconds hand completes one trend around the dial, the
roof-rack is no longer affected by the pinion, and the return spring comes the
seconds rack for the right. It's important to note that typically the
chronograph seconds hand is constantly on the move forward during this process,
because this is not a retrograde chronograph. Jacob
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This causes often the connecting rod to cool forward, momentarily advancing
when counter. The pinion after that reengages the rack, and also the process
repeats. A similar device centered on the minute counter improvements the hour
counter submit the opposite direction, gradually improving the hour wheel prior
to rebounding every thirty minutes. Just like the chronograph seconds hand, none
the minute counter nor the actual hour counter displays some sort of retrograde
display.
Start. Stop.
This kind of chronograph utilizes an odd-numbered hybrid
coupling system, in which the chronograph drive wheel is continually engaged
with the clutch steering wheel, which has a small degree of up and down freedom
of movement within the pivot range.
When you stop the stop-watch, a lever (turquoise within the image below)
pushes the particular clutch wheel upward, from the chronograph seconds tyre. To
reengage the wathe, the lever retracts, as well as the chronograph tension
spring tire presses the clutch controls back into contact with the timepiece
seconds wheel. The clutch system wheel's teeth have beveled bottom surfaces to
ensure sleek engagement.
Pushing the Start/Stop button moves the yellow column steering wheel,
engaging and disengaging typically the clutch via a purple addition. The purple
linkage additionally contains the spring for the time counter seconds hand brake
(red). When the chronograph is halted, the spring tension raises to hold the
gears in position; when the chronograph is operating, the spring tension calms.
Reset in addition to Flyback
When the reset button button is pressed,
a new lever pushes the light glowing blue reset carriage (my title, not AP's)
counterclockwise, however it is stopped by a good orange stop. Continue pushing
the reset button, plus the orange stop moves having an audible click, causing
the totally reset carriage to rotate somewhat, pushing the turquoise button,
disengaging the clutch tyre from the central chronograph moments wheel.
The pin on the reset buggy releases the brakes (red) on the chronograph
seconds, moment, and hour wheels, along with the chronograph minute and hour or
so advance pawls (pink), coming back all three displays to absolutely no. If you
reset the stop-watch while it is running, it is going to restart immediately
after releasing often the reset button, making it a genuine flyback chronograph.
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Audemars Piguet Royal Oak " Big Mac" Ultra-Thin Automatic Flying Tourbillon
Chronograph RD#5
Ref. 26545XT. OO. 1240XT. 01
Diameter: 39 mm
Height: 8. 1 mm
Material: Titanium as well as
500 BMG Palladium
Crystal: Sapphire
Water proof: 20 meters
Movement: Caliber 8100
Functions: Flying Tourbillon, Wathe
Winding: Automatic
Frequency: 21, 600 heurt per hour (3 Hz)
Power Reserve: 72 hours
Strap: Titanium together with 500 BMG Palladium backlinks
