[Press release] What if there was a dropper post, that actually solves and not just improves reliability issues, saves cost and time, and let´s you not need to worry about service time anymore.
Or how about “bleeding” your seat post within a few seconds, while it is still installed in your bike?
BikeYoke presents its new REVIVE dropper post, featuring one of the most brilliant design features in drop post design in many years.
More than 10 years of experience in drop post design went into the “REVIVE” and the development has finally paid off.
Of, course, just as many other companies, BikeYoke would say, that this seatpost is reliable and strong and smooth, …
And yes, revive is all of that, but not because we tried to improve current designs, but because we were thinking outside of the box and created a new concept, that is completely different from everything before.
Status quo
To understand the benefits over other posts, you have to know about the problems of many current designs first:
Many of the popular current seatpost designs are based on a hydraulic lockout-system, that relies on a perfectly sealing IFP (Internal Floating Piston), separating oil from air to prevent the seatpost from getting suspension feeling. There are a lot of difficulties to overcome, when using an IFP, because an IFP has to maintain 100% sealing function. If air can go to the oil side, your post will start becoming springy. This happens to a lot of posts in the market already and is the main issue, why posts need to be serviced.
Just to mention a few of the issues an IFP design comes with:
REVIVE design
That´s why BikeYokes “REVIVE” features a NON-IFP design, because we think it is too difficult – if not impossible – to make a really reliable design using an IFP.
REVIVE only requires 2 dynamic seals in the hydraulic circuit (RS Reverb and KS LEV and Fox transfer use 4 dynamic seals), with those two seals being the ones, that are known to cause the least problems in sealing application: The inner shaft sealing and the piston sealing for the lockout mechanism.
The highly critical IFP has been removed, and with it the need of perfect concentricity and finish of the sealing surfaces of the tubes.
The lack of an IFP also results in super smooth movement and breaking loose due to less friction.
REVIVE VALVE – THE RESET BUTTON
The most important and groundbreaking feature of Revive is its “REVIVE-VALVE”.
Even REVIVE can get air somewhere where it does not belong. This can happen for example, when you actuate your seatpost for a few times, while its upside down.
And here is where the RESET BUTTON comes into play:
Press the “RESET-BUTTON and drop the seatpost by hand.
This will automatically reset your hydraulic circuit to “new”.
Whenever. Wherever. This is done just within a few seconds and only by the push of a button without even having to remove your drop post from your bike.
One piece lower
Next to creating a completely resettable hydraulic system, REVIVE also features a one piece lower tube, whereas many posts have the upper bushing (which experiences the biggest load) installed on a separate top cap, which is then threaded on top of the lower tube. Installing the upper bushing directly into the lower tube does not only increase structural strength of the lower assembly, but also provides better load displacement, since the upper bushing can be designed longer without increasing the overall build height. Perfect concentricity with the lower tube and it´s keyways, that houses the 6 pins to eliminate rotational play, is also an attribute that come in hand with a one piece lower tube. Due to the extra wall thickness at the collar area, Revive is also less prone to be affected by too high seat-clamp squeeze.
Serviceability
So, now one might already understand that:
This means the hydraulic circuit is a very stable closed system and basically maintenance free.
Still there are parts that will need to be serviced sooner or later and when designing REVIVE it was put a lot of attention to maximum user-friendly serviceability:
Bushings and keyway pins will wear over time. Usually, the pins wear first and you would want to replace them to reset your rotational play.
Exchanging the pins and the lower bushing is simple and does not require any opening of the hydraulic system and can be done within less than 5 minutes.
Here is how you do:
All this does not require any hydraulic work or any special tools, other than 2 wrenches and retaining ring pliers.
If you want to do a full service including replacement of dust wiper and upper bushing, then the procedure is the same, except for that you pull out the upper unit completely instead of just stopping after the pins fall out. Then you can remove the dust wiper and upper bushing and clean and lubricate the lower tube, before reassembly.
Specs, sizing, pricing, availability
Travel options:
125mm @ 369mm (30.9 and 31.6 diameter)
160mm @ 439mm (30.9 and 31.6 diameter)
Remote options:
1-by remote “Triggy”
2-by/3-by remote regular up/down push-button
Weight:
470g @ 125/30.9 (w/o remote)
25g (Trigger style remote)
BikeYoke REVIVE will be available in January/February 2017.
PRE-ORDER-DEAL
BikeYoke will offer a pre-order deal on REVIVES which will start right after Eurobike for 31 days.
All pre-order customers will get some special goodies:
More info @ www.bikeyoke.com
What makes Revive different:
“REVIVE” Valve
NO IFP
One piece collar + outer tube
adjustable side play
weight
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