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X-Fusion DH Fork

BikeFan84

Monkey
Oct 27, 2004
302
0
D-Ville
you think? for lubing the seals? I was thinking pressure release ala Fox 40 Rad pro to, to me if it were "grease" ports, something similar to the totem's speed lube system, it would have a metal look all over instead of just to the surround.
 

BmxConvert

Monkey
Aug 6, 2007
715
0
Longview, Washington
Fox will be bringing out their new 40 soon and going 100% air sprung for their entire line(even the single crown forks), and now we've got X-fusion showing their fork in testing and the DVO(or whatver the name is) inverted fork; I'm anxious to try to decide on a new fork next year.
 

dropmachine

Turbo Monkey
Sep 7, 2001
2,922
10
Your face.
Im excited about this fork. Almost everything I've seen from XF has been stellar (especially the vengeance) so I have no doubt this will be a great start.

The full Fox air shock, that doesnt' excited me as much. After trying the Vengeance and even the Lyrik, I've really noticed the stickyness of Fox Air forks. I have doubts that they could make it as smooth as the others, especially with the larger legs ya know?
 

NoUseForAName

Monkey
Mar 26, 2008
481
0
Fox will be bringing out their new 40 soon and going 100% air sprung for their entire line(even the single crown forks), and now we've got X-fusion showing their fork in testing and the DVO(or whatver the name is) inverted fork;I'm anxious to try to decide on a new fork next year.
It's barely 'this year'. Good job on sucking up the hype.
 

BmxConvert

Monkey
Aug 6, 2007
715
0
Longview, Washington
Im excited about this fork. Almost everything I've seen from XF has been stellar (especially the vengeance) so I have no doubt this will be a great start.

The full Fox air shock, that doesnt' excited me as much. After trying the Vengeance and even the Lyrik, I've really noticed the stickyness of Fox Air forks. I have doubts that they could make it as smooth as the others, especially with the larger legs ya know?
We'll see how it goes. Their reasoning was that the new air spring forks (anything 2013 with 150mm or more travel) is allowing them to finally get full travel as it's more linear. Apparently they liked it so much they are dumping the coil.

It's barely 'this year'. Good job on sucking up the hype.
Jump to conclusions much? I sold my DH frame and don't need a fork until it's replaced... next year.
 
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4130biker

PM me about Tantrum Cycles!
May 24, 2007
3,884
450
That was the lamest joke ever. Sorry everyone- I'm all hyped up after a fun ride- ps- that fork looks kinda neat. I did the grease port mod from Udi a couple years ago and thought it was pretty useful- cool to see it on a production fork, if that's what those are...
 

daisycutter

Turbo Monkey
Apr 8, 2006
1,660
129
New York City
http://www.pinkbike.com/news/X-Fusion-RV1-DH-Fork-first-look.html

X-Fusion RV1

X-Fusion is well aware of the demand for a downhill fork in their lineup - the comment section of every X-Fusion article on Pinkbike has been filled with readers asking for it - and that anticipation was heightened with the February announcement that they will be working with the Pivot Factory DH Team on the World Cup circuit, with further confirmation coming in the form of POV footage of X-Fusion's John Hauer testing the prototype fork in California. We all knew it was on the way, and this coming July will see the release of their 200mm travel RV1 that is pictured here.

RV1 Details

• Intended use: DH racing
• Travel: 200mm (internally adjustable to 180mm via a push-pin system)
• 36mm diameter stanchions
• Coil sprung
• 26'' and 650B versions (same lowers, different crown offset)
• External adjustments: separate low and high-speed compression, low-speed rebound
• Uses X-Fusions twin-tube HLR damper
• New 'Nvolve' fork seals
• Pressure release valves
• Direct mount stem compatible
• Uni-directional carbon fiber leg guards
• 20mm thru-axle
• Production fork weight: 6.3lb (w/ uncut steerer)
• Availability: July, 2013
• MSRP $1299 USD

Twin-Tube HLR Damper
The RV1 will make use of X-Fusion's proven twin-tube HLR damper that we've become very familiar with from their Vengeance platform, although it will see some important internal refinements to better suit the fork's 200mm of travel (the Vengeance offers up to 170mm) in the form of a higher oil flow piston and a different shim stack arrangement. Just as in the Vengeance, the HLR damper is a sealed but serviceable aluminum unit that separates the lubrication oil from damping duties. It is generally agreed upon that this layout makes for more consistent damping by keeping
cavitation to a minimum due to the system preventing the oil from sloshing about inside the fork, but it also eliminates the chance of dirt and grime that has managed to get past the seals from mixing in with the damping oil. The twin-tube layout is just how the name suggests, with the damper cartridge employing a tube within a tube layout that allows the oil to flow through the compression damping circuits that are located at the bottom of the cartridge and out ports that feed into the outer chamber created by the exterior damper cartridge wall. The opposite happens during the rebound stroke, with the oil flowing in through the ports, past the check valve, and through the rebound assembly. External adjustments included rebound speed that can be adjusted via a red anodized dial atop the right fork leg, with separate low-speed and high-speed compression dials found at the bottom. Our time on shorter travel versions of the HLR damper have shown it to be a top performer that can rival anything on the market, so we are very much looking forward to having a go on the 200mm travel RV1.
 

SuboptimusPrime

Turbo Monkey
Aug 18, 2005
1,659
1,636
NorCack
Pretty impressive set of features (and weight) at that price point. The DH fork market is getting so competitive...would love to get some time on one of these.
 

yd35

Monkey
Oct 28, 2008
741
61
NY
6.3 lbs is impressive, considering it's coil. Let's hope it's a real-world weight.
 

Tmeyer

Monkey
Mar 26, 2005
585
1
SLC
this will be on my new build for sure. The vengeance i currently run is awesome and if this is anything like it I have no issues buying this fork.
Any creaking? My 2012 developed a nasty one after a few months. I sent it back as they say they have a loctite fix for it but I'm not very optimistic. Only complaint w/ the fork. Buttery smooth!
 

csermonet

Monkey
Mar 5, 2010
942
127
youve never had a 40 have you?
I also agree the bolt on lower protection is awesome. I would buy some from a 3rd party brand if there was a good option out there. Integrating it into the design of the lowers is genius! My 40 lowers get scratched to hell on my bike rack
 

blindboxx2334

Turbo Monkey
Mar 19, 2013
1,340
101
Wets Coast
Any creaking? My 2012 developed a nasty one after a few months. I sent it back as they say they have a loctite fix for it but I'm not very optimistic. Only complaint w/ the fork. Buttery smooth!
my velvet RL had some bad creaking problems once my buddy put it on his bike and started riding it.. x fusion gave me the idea of turning the bike upside down and pouring tri flow in the steerer/crown junction.. so far no creaking. i just hope this isnt an issue for this fork.

part of me also really wishes they just uni-crowned every damn fork they make.. not sure why they dont..:mad:
 

dan-o

Turbo Monkey
Jun 30, 2004
6,499
2,805
youve never had a 40 have you?
Been riding 40s in east coast rox since 2006 with no punctures.
The fox decals have also done a great job preventing lift/shuttle damage.
Still think the guards are gimmicky.
 

4130biker

PM me about Tantrum Cycles!
May 24, 2007
3,884
450
Why doesn't someone make an asymmetrical casting that is thicker on the outside for protection, and super thin on the inside (wheel side) to save weight? Seems feasible enough with a casting.
 

blackohio

Generous jaywalker
Mar 12, 2009
2,773
122
Hellafornia. Formerly stumptown.
because putting a weaker point in a hollow casting that has to absorb and deflect lots of impact seems like a kinda bad idea.

..and how does one shave weight if they remove 1mm from the inside and add 1 to the outer of a larger surface area.
 

Jm_

sled dog's bollocks
Jan 14, 2002
18,995
9,655
AK
Mg and Al lowers are ridiculously light, it wouldn't make any real difference.
 

4130biker

PM me about Tantrum Cycles!
May 24, 2007
3,884
450
Weight saving would be vs an imaginary lower that is thick enough to stop dents throughout.

Everything has a "weak point"- I am suggesting thicker than the tin can norm in the impact areas instead of a bolt on plastic afterthought guard.

So in essence, my idea would be heavier than a thin lower casting by itself, but IMO a lot cleaner than a bolt on guard.
 
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norbar

KESSLER PROBLEM. Just cause
Jun 7, 2007
11,369
1,605
Warsaw :/
Any creaking? My 2012 developed a nasty one after a few months. I sent it back as they say they have a loctite fix for it but I'm not very optimistic. Only complaint w/ the fork. Buttery smooth!
The paste or whatever they use to fit the stanctions is strange and it's just friction between them and the crown from what I've gathered. The fork is fine.