Well polymers (the resin, that holds together composite materials) do have quite a lot of internal damping. But still, you have a ~70 kg weight over it. I doubt they have THAT much damping. I guess he actually did think that it's not that much travel for it not to be a problem. If at all, since he's into prosthetic design, not suspension design (i have a feeling this was more of a design excercise than an engineering design).
groghunter i predict a different problem - using all the travel and not limiting it.
What The?! Wild Looking Lauf Trail Racer Fork 8
With 60mm of travel and incredible weight of only 980 grams, the Lauf Trail Racer eliminates as many moving parts as possible. It's made from carbon fiber and uses a set of composite leaf springs which are shockingly flexible and very impact resistant. The fork has a progressive feel to it.
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bturman 8/30/2013 4:59 PM
8 comments newest first
74 Primoz /images/default/avatar/c50.png http://www.vitalmtb.com/community/Primoz,74/all 08/01/09 56 265
Primoz 8/31/2013 4:09 AM
23445 adam.kowalczyk.18 http://p.vitalmtb.com/photos/users/23445/avatar/c50_fb_picture_100000932884484.jpg?1365442242 http://www.vitalmtb.com/community/adam-kowalczyk-18,23445/all 04/08/13 3
adam.kowalczyk.18 8/30/2013 11:18 PM
I prefer old Cannondale Fatty fork.
269 chequamie http://p.vitalmtb.com/photos/users/269/avatar/c50_92192850_1249262452.jpg?1290150432 http://www.vitalmtb.com/community/chequamie,269/all 08/02/09 2 1 15 123
chequamie 8/30/2013 6:01 PM
backwards lawill fork
25087 tonymcaron /images/default/avatar/c50.png http://www.vitalmtb.com/community/tonymcaron,25087/all 06/06/13 7
tonymcaron 8/30/2013 5:56 PM
Very cool and innovative, I must say that. But it just gets worse every time I look at it. Nice observation Primoz, 60mm of undamped travel. I guess at 60 you're just taking the edge off the bumps, so controlling that might not be a big deal. The wheel path is another thing. And where are the braking forces going? To one side of a flimsy leaf sprung system? Yuk.
13826 Albe23 http://p.vitalmtb.com/photos/users/13826/avatar/c50_Albert.jpg?1330922783 http://www.vitalmtb.com/community/Albe23,13826/all 03/04/12 59
Albe23 8/30/2013 7:38 PM
Reportedly, breaking forces are 'neutral'. Also, there are three different weights to the leaf springs. But remember these aren't like steel leaf springs, some crazy fiberglass I read. So don't know how 'springy' they are or if they need damping.
316 kidwoo http://p.vitalmtb.com/photos/users/316/avatar/c50_fastesttoilet_1403751711.jpg?1403751102 http://www.vitalmtb.com/community/kidwoo,316/all 08/03/09 5 18 8 3 154 560 1
kidwoo 8/30/2013 7:45 PM
Yeah I can tell those braking forces are neutral as fvck. I mean just look at it. I don't see that pivot moving at all when stabbing the brakes. Not one bit.
24517 groghunter /images/default/avatar/c50.png http://www.vitalmtb.com/community/groghunter,24517/all 05/18/13 13 100
groghunter 8/30/2013 9:44 PM
I predict the same problem as elastomer setups, too: impossible to get full travel.