Scurra Hard Enduro Fork and Frame 44

The guy who is responsible for this project has some serious bills to pay as we produced the front triangles and other parts. Some front frames are still lying around our workshop. The rear suspension is a bad copy of our Zumbi F22 linkage but with a bad shock angle! Beware to work with this company!

Mr. Pawel from Zumbi, please read our Agreement from 17.6.2012 - especially Point 5! You are not able to produce neither frame or front suspension! It was a mistake - we lost with Zumbi 1 year and more than 13.000 EUR! On request we can send correspondence with Zumbi and manufacturing protocol from delivered parts with about 50 faults...

The only thing i like is the builder thinking of 29" front wheel and 27.5" out back its would be cool to see more. I have always wondered why Dirt bikes have the larger but no bikes

I feel like it's 1995 all over again.

That can't "maintain the head angle". While I understand that it stays parallel, as the fork goes through the travel, the head angle will drop as it does on any other bike,thus changing the head angle.

Correct, but since your steering axis and wheel path are independent, you can maintain the trail value, which depending on what you are looking for, is potentially more important than steering axis angle during large compressions

if you got the legs caught...

No.

I like that double shock set up, that's a very interesting link setup with the fork (if that's what you could call it)

Just showed this to my wife. Her response was to throw up in her mouth!

Wow! that xx1 surely looks great!

Its actually not really about wheel path at all. There are a few reasons to explore a linkage on the front of a bike, but the primary one is to be able to tune the anti-dive dynamics in the front end. If you get anti-dive values correct, you have the potential to keep the front suspension completely active under braking, without diving, no matter how deep the braking bumps. The one main problem with this is rider feel, and the sensations that all riders are used to feeling while hitting the brakes into the corner.

In addition, with a design like this, you could easily make a lighter, more stiff front end, due to the limitations of telescoping bearing and sealing systems. Also, some interesting things like the steering axis being independent of the wheel path, keeping consistent geometry/trail during compression and trail values that don't effect steering feel keep these designs interesting.

Whether or not riders accept them is another story, but I certainly believe that the design is much more sophisticated than the average reader of the standard MTB message board would understand. Because of this, spectating the armchair engineering is rather entertaining, in a "I feel sorry for civilization" sort of way.

EDIT - Its also pretty cool how they are utilizing the front and rear shock mounting to centralize and minimize the frame loads due to large bottom out type scenarios.

Good point on the anti squat properties, I forgot to think of that. I'm just more of a single pivot wheel path kind of guy.

Don't forget that every bike, single pivot or linkage, has inherent anti-squat properties! This is why most single pivot bikes (at least the ones without an idler) have the pivot in generally the same location. That is a spot with a good balance of pedaling and wheel path properties. Linkage bikes just have a bit more flexibility in controlling how the anti-squat progresses through the travel.

Also, during breaking, it is "Anti-Dive" as opposed to "Anti-Squat". Glad some people are thinking a bit more critically about the design instead of completely blowing it off!

When I build my own single pivots (At least on downhill bikes), I put the pivot a little higher than the chain line so that when I stomp on the gas, it pushes the tire into the ground.

Is that a stripper doing the splits back there?

I was going to joke and say I'd ride it if came in 650b or 29, but I guess it already does.

I only just noticed that it's two shocks end to end, not both ends sharing the same shock. I'm getting ahead of technology. Maybe they'll pull that one off for next year.

Apro, a taiwanese frame manufacturer and owner of X-Fusion, had an open model that did this a few years back. It was awesome.

I am confident that fork would break.

under you for sure!

No doubt

Where else could it have come from?

Gwin is signing for scurra for 2014, since its a better bike.

This was done years ago with the Whyte PRST-1 ........Also don't want to be a pedant but.....it's called aluminium

http://grammarist.com/spelling/aluminium-aluminum/

dear followers of the queen: we had a revolution awhile back, you might have heard of it. during it, we got rid of letters from some of your words, just to screw with you. shortly after that, vital was born to remind you of it.

http://www.bikeexif.com/honda-rc125m

something similar has been done before..supposed to work really well

awesome concept, but I really doubt this will ever be mainstream

AND

what is the benefit of designing a bike like that, please tell me there is a benefit and that you didn't just make some crazy bike design that doesn't have some added benefit

primary BENEFIT is a constant geometry [head angle & wheelbase], and this is something that telescoping forks will never themselves attain.