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New BOS usd fork.

HAB

Chelsea from Seattle
Apr 28, 2007
11,589
2,021
Seattle
Is that a threaded on seal retainer, or did they just machine slots into the leg to catch dirt and be annoying?
 

konastab01

Turbo Monkey
Dec 7, 2004
1,262
316
Feel like I might need these for my build, new Bos stuff seems to get a good rep these days too.
 

troy

Turbo Monkey
Dec 3, 2008
1,026
785
¿slǝʌɐɹʇ ʎuɐɯ ʍoɥ
IDK but judging by 2 crowns that they have shown (the lower one with 3 bolts per side, and the upper one with 2 bolts - seen in the photo with the air cap) my guess would be it is a dh fork with 200mm of travel minimum.
 

Udi

RM Chief Ornithologist
Mar 14, 2005
4,918
1,213
Not sure if troy is joking but I'm pretty sure that's a moto fork.

It's the only place flexbucket inverts belong anyway, where you can add enough weight to make them remotely stiff enough in torsion.
 

troy

Turbo Monkey
Dec 3, 2008
1,026
785
Not sure if troy is joking but I'm pretty sure that's a moto fork.

It's the only place flexbucket inverts belong anyway, where you can add enough weight to make them remotely stiff enough in torsion.
Nah man, it's a dh fork. It will be shown at the Eurobike this year, so quite soon.
 

Kanye West

220# bag of hacktastic
Aug 31, 2006
3,767
501
More USD forks would be great.

Be honest - none of you goobers on here are racing WC's, and if you're actually trying to justify that the bit of flex in a fork is affecting your cornering or line choices, AND you can identify that as the cause over things like damping, chassis bind, or differences in offset, well......I don't believe you. At all. And nobody else should either.

Only way you could pinpoint that is to get two forks with the same guts, same bushing clearances and overlap, and same offset, and run the same course. Pretty certain that nobody on here has had that opportunity.

But it's a known and proven fact the USD forks are typically more comfortable since their chassis aren't as prone to binding. So, take the all-day lift-riding comfort and enjoy it.

Unless of course it's keeping you from that top step of the next WC round. In which case disregard all of this.
 

Jm_

sled dog's bollocks
Jan 14, 2002
20,065
10,630
AK
Only way you could pinpoint that is to get two forks with the same guts, same bushing clearances and overlap, and same offset, and run the same course. Pretty certain that nobody on here has had that opportunity.
Some of us have run quite a few inverted forks in our time, from single crown to dual crown. Bottom line, it takes a lot more money, time, exotic engineering or materials, to make an inverted fork stiff enough for mtb. Not impossible, but put that time and $$$ into a right-side up and you'll end up with a superior chassis every day and sunday. The problem with that chassis binding claim is that sure, the uppers are generally bigger and as the fork slides into it, they reinforce the fork against bending forces, but you can get the same by going to bigger stanchions with a non-inverted fork, and since your inverted fork has to weigh more to make up for the lack of torsional rigidity, you don't come out ahead, a Fox 40 will be lighter and stiffer.
 

norbar

KESSLER PROBLEM. Just cause
Jun 7, 2007
11,503
1,719
Warsaw :/
Yeah, but the name "Volcano" don't come from nothing. It just waiting to explode. @norbar had one back in the days IIRC :busted:
I had one in 2003 because it was 600$ back then when most other forks were 2000$. Thanks to my father being an active mechanic at the time the fork worked well but it was heavily modified. I don't remember the specifics since I was 16 at the time but using parts from other suspension companies (and maybe drilling. I remember he modified the damper itself). Brand new it was meh at best but it could be made to work and 4.3kg fork wasn't heavy in 2003. The only problem I had is after some fat guy bounced around on my bike in the parking lot the fork piston decided to leave the leg mid run. I guess it was designed only for people who were sub 60kg as I was back then.

@troy @Udi there is a bigger problem with this than it being USD. French customer support. I'd rather experience German Sex, Humor and cuisine at the same time.
 

Jm_

sled dog's bollocks
Jan 14, 2002
20,065
10,630
AK
Oh look, It's this thread again...
It's about a 3 year cycle, then someone gets the idea again that it's the best thing ever and going to revolutionize the industry. We are due for a new Dorado about now.
 
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kidwoo

Artisanal Tweet Curator
Dorado shcmado, you guys should go feel the torsional stiffness of a white brothers groove inverted. Those things must have bushings up the entire length of the legs. They were legitimately stiff. Not just just 'stiff for an inverted fork'

Of course they weigh like 9lbs but that just means you can strap fewer lead weights to your bike to keep chris porter happy.
 

Jm_

sled dog's bollocks
Jan 14, 2002
20,065
10,630
AK
Dorado shcmado, you guys should go feel the torsional stiffness of a white brothers groove inverted. Those things must have bushings up the entire length of the legs. They were legitimately stiff. Not just just 'stiff for an inverted fork'

Of course they weigh like 9lbs but that just means you can strap fewer lead weights to your bike to keep chris porter happy.
Just ditch the procore.
 

Jm_

sled dog's bollocks
Jan 14, 2002
20,065
10,630
AK
How stiff were Avy USD 7.5?
So stiff you had to loosen the crowns after a bad crash to straighten it if I recall.

The other advantage about inverted is that it's far simpler to make when all you have is a CNC machine.