The new
RockShox Vivid Air shock has created quite a buzz, but up until now riding impressions have been hard to come by. I spent a good part of my time today charging hard with the new air sprung downhill damper under me and inside you can read my thoughts on the new lightweight DH shock.
You'll also find pictures detailing the Vivid Air's internals, including the novel Hot Rod thermoplastic temperature compensating rebound needle.Read on...Vivid Air R2C bolted to my Nomad test bike
Its no longer a secret that RockShox is getting very close to releasing an air sprung version of their proven Vivid coil shock. As downhill racing progresses and the top riders (
along with the regular joe's) are looking for lighter and lighter bikes, being able to drop 300-400 grams by replacing their coil sprung dampers with an air version is looking more like it is beginning to be a viable option. While simply bolting on a long stroke air shock may be an easy way to loose some weight, it isn't that simple. Standard air shocks have two distinct disadvantages to their coil spring brethren: higher amounts of friction due to having to deal with more seals, and more importantly, changing spring and damping rates as they heat up over long runs or demanding terrain. The new Vivid Air tackles both of these problems head on.
RockShox Vivid Air R2
The Vivid Air uses a new Twin Tube Solo Air spring which is exactly as it sounds, two air canisters that share the same duty. Looking at the body of the shock you'll quickly notice the increased size of the air canister, but what you're actually seeing is the outer air chamber. Between the two is an air bleed hole that creates one large chamber. This has two benefits to the performance: firstly it creates a more linear spring rate that is compatible with a wider range of bikes and doesn't suffer from excessive ramp near the end of the stroke, and secondly, the larger volume is better able to cope with high operating temperatures without suffering from excessive spring rate changes as the air heats up. The twin air canisters also add another level of tuning with the ability to use specific shims that take up volume within the outer can which a rider can use to fine tune the spring rate. While this type of technology certainly isn't new to shocks, it is ideal for the Vivid Air's intended use.
The Vivid Air uses two air cans, one within the other, with the ability to fine tune the spring rate by adding or subtracting plastic shims to the space between the two.
What is new though is the Hot Rod damping needle hidden within the shock. To explain how the Hot Rod works, I'll first talk about why it could be a big deal. Even though the average downhill run will be over relatively quickly when compared to the average cross-country loop, the shock on a DH bike will see faster shaft speeds and much higher temperatures during that time. Ever feel your shock after a hard run? It will be quite warm to the touch. As the shock gets hot, the damping oil will warm up as well and get thinner, and therefore it won't provide the same amount of resistance it passes through the damping circuits. RockShox's solution is to change the damping to match the hotter and thinner oil, hopefully resulting in greater consistency throughout a run. They do this by using a small piece of temperature sensitive thermoplastic (
with a resin core) that self adjusts as the shock gets hotter. In simple terms, as the shock gets hot the thermoplastic expands and the rebound adjuster needle actually gets longer, therefore providing increased damping. As the temperatures inside the shock lowers, the rod contracts and returns to it's original length. Its a simple idea that took 2.5 years of development time to prime it for production. But does it perform as advertised?
The Hot Rod rebound adjusting needle. The black piece just above the tapered end is thermoplastic and RockShox claims that it expands as the shock heats up during long or difficult runs to compensate for damping fade
RockShox Vivid Air details
• Air sprung shock designed for downhill and all-mountain use
• Twin Tube Solo air spring for a supple and linear coil feel
• Uses new Hot Rod thermal compensating rebound needle
• Air can/valve can rotate to accommodate different frame designs
• Up to 400 grams lighter than a Vivid Coil shock
• In development for 2.5 years
• Two models: R2C and R2
• Available in five lengths: 9.5" x 3.0", 9.5" x 2.75", 8.75" x 2.75", 8.5" x 2.5", and 7.875" x 2.25"
• MSRP $620 USD
This would be my first ride on the new Vivid Air shock and the boys in Durango lined up a fast and rowdy downhill for me to have a proper go on it. Not only were the speeds quite high, the run was also over ten minutes long. A perfect place to see how well their new Hot Rod equipped air shock would perform. Besides having to set your air pressure for the proper spring rate, all adjustments are the same as the original Vivid coil shock. My Nomad was equipped with the higher end R2C model which means that I dialed in my low speed compression, as well as both the beginning and ending stroke rebound before hitting the trail. Pushing on the seat gently proved that the new Vivid Air is as supple as one could ever hope for. New seals and polished inner air can surfaces help to enhance this feeling. What I was really interested in was how the new shock performed at speed, especially near the end of a long run. I was impressed with how the air shock tackled the fast and rough sections of our test track. To be completely honest, if it had been a blind test I doubt I would have guessed that it was an air sprung shock. In the fast rocky sections I felt none of the harsh spike or very slight delay that other air shocks seem to suffer from at high shaft speeds. The lack of friction within the Vivid Air must surely have played a part in this sensation, or lack of it. After a fast nonstop run the shock felt every bit as composed as it did at the beginning of the run. I could feel that the shock body was quite warm when I put my hand around it after a run, but the rebound speed was the same as at the top of the mountain. Of course the disclaimer is that I'm far from a pro level rider and probably wasn't pushing the Vivid Air anywhere near it's limits, but I was impressed nonetheless. Just like anything else new in a high performance sport, I'll be believer when top level World Cup riders start to use the new shock day in and day out.
The Vivid Air uses the same damper assembly as the coil version
I only spent half a day charging hard with the Vivid Air under me, but I was impressed with how it performed. Like I said above, if it was a blind test I would have guessed that it was a coil shock. One of the highest praises one can make about their suspension is that it felt invisible, this is exactly how the new shock felt. While built to handle the rigors of a World Cup DH course, I could see a lot of aggressive all-mountain orientated riders reaping the benefits from this technology as well. Light weight with coil sprung performance, just what a lot of us are looking for. Keep in mind that while I'm obviously happy with how it performed, this was only a short test. Look for a long term review down the road with much more in depth impressions.
Stay tuned!Rockshox.com
Furthermore That's some first test, they just wanted to share their first experience. Don't expect any bike site to have a Sam Hill reviewing it what you seem to do. You want a real test? Real opinion, go and ask Peaty or Minnaar, you can find their profiles on Facebook. Use your internet diplomacy skills to ask them.
If you have high expectations, make sure you can stand up to them yourself.
If you wish to find little digs about me from checking out my profile your more than welcome but that's just pathetic!
Oh and I'll accept a ticket for a flight to yours. You'll have to book it from Kabul, Afghanistan. I'd like a non-stop flight with a business class seat.
Everyone's a king of their own trails. I personally think you need to have a quiet look at your attitude towards people. Your comments are not being welcomed once you start taking it off the subject of bikes.
You feel relieved then, you knew what he wanted, you are a member of a exclusive club! a club where a sport car is a medicine written on a prescription from a urinologist.
Please loaded, enlighten us! tell us who you are. Release the fury of your ego!
Small penis without doubt.
Stop spamming my noteboard boyz. Piece among thee who speak the common tongue...
and what sort of word is "garbage" sounds american to me
and im WELSH!
There is a massive debate about this and to be honest, no one would win. Albanian, Greek and Latin are in for the running. This is from the era of the roman empire being the first real super power in the world in the first Century. Sorry Team America, but that's the truth.
Has anyone else noticed that this has floated away from the fact that this article is about a shock made by a bunch of lads and lasses at Rock-shock!? it's an Air one thats for a DH bike........ Who'd have thunk it hey!!!!!!!!!!!!!!!!!!!!! It you boys and girls wish to continue this, why not open a thread on the Forum??????
Just a thought.
gazmataz - look at my claim a little closer
"twat" bet you dont even know what one of them is
Rock Shox Vivid 5.1 (8.75 x 2.75) -------> 440 g
FOX RC4 (9.5 x 3.0) -----> 450.7 g
Manitou Revox (9.5 x 3.0) ---->464 g
Rock Shox Vivid 5.1 (9.5 x 3.0) -----> 462 g
Cane Creek Double Barrel (9.5 x 3.0) ----->476 g
Springs:
FOX Steel (400lb x 3.0) -----> 580.5 g
Obtainium Ti (400lb x 3.0) ----->321 g
Do you feel silly now?
All I meant is that MDHdirtjump there's no bloody way your shock coil weighs so little.
( used in commercial hot water tanks )
Reason I ask is that I'm starting to put together a bike very much like a Nomad that I'm going to be using for everything in BC, DH and big long AM rides, and want to spec a shock that I can change the sag on real quick.
Answer appreciated!
Charlie
Uniform
November
Tango
Echo
Lima
Lima
Oscar
Dont worry, everyone will be just fine with air shocks
look forward to hearing how they hold up at fort william, that has to be the ultimate test really, especially under peaty or minnaar, although the fact they are sponsored might proved some bias haha
It's over 10 years of development of air springs now. So there is not only DurabilitAAAE, but also ReliabilitAAAEE issue gone. First they were leaking and too progressive, then they stopped leaking and were still bad performers first air Boxx WC, then they started to be better (Fox Float 2008, RS solo air 2010), and now Fox releases 2011 air forks with RC2 Fit dampers with valving tuned in a way so they feel nearly as coil.
- Drops, Vivid Air perfectly beats DHX Air (8 to 5)
- Jumps, Vivid Air stabilizes my take off and landing (8 to 7)
- Cornering, I think i need to re - dial in my Vivid Air (so far my cornering still flows nicely with my DHX Air) (6 to 8 )
- Full speed at rock garden and extreme descending, I think i need to re - dial in my Vivid Air (so far it is indifferent with my DHX Air) ( 7 to 7)
- Consistency of performance for 12km, Vivid Air perfectly beats DHX Air (8 to 4) --- is it because of Hot Rod?
Conclusion: I still required more benefits from Vivid Air compare to DHX Air, since it costs higher than DHX Air
* above are my SUBJECTIVE assessments
Thats expensive with a $620 MSRP. I'll stick to a DHX Air for that price
Second post
The thing is, you could nearly buy two Vivid 5.1's for that price.
And it only drops 300-400 so about $1 per gram dropped
I guess for the best you got to empty your wallet.
- Drops, Vivid Air perfectly beats DHX Air (8 to 5)
- Jumps, Vivid Air stabilizes my take off and landing (8 to 7)
- Cornering, I think i need to re - dial in my Vivid Air (so far my cornering still flows nicely with my DHX Air) (6 to 8 )
- Full speed at rock garden and extreme descending, I think i need to re - dial in my Vivid Air (so far it is indifferent with my DHX Air) ( 7 to 7)
* above is my SUBJECTIVE assessment