What’s on the disc brakes behind the fork? An aero cover?
Weird.
I think you’re seeing the Lauf leaf spring. 30mm of travel.
Oh I see thank you. Not seen one like that before.
I have a feeling there will be a lot more to see in the near future.
If you were a cagey manager, even if the data said it was just close…I’ll be the sponsorship deal would be worth a lot more if you just said it was ‘about 5 watts’ better. Lucky that josh and dylan have a lot more integrity than me and would never do a thing like that.
Now I get to tell people I got my lauf for the aero fork ![]()
Maybe lauf should put their suspension fork on their new road bike. ![]()
50kph actually to get better results, straight from Dylan at the gravel race Saturday. So at 20mph it’s maybe 2w. Still, +suspension and not slower is a win.
My post was based on the below video from Ben Delaney - 20mph, 0* and 2.5* yaw and static positions.
Maybe they did additional testing for Dylan that Delaney did not take part in…have no idea. Just putting out the info that I was aware of.
Wind tunnel, so any suspension savings would be additional
For sure, as a Lauf owner this is a pleasant surprise. Eyeball wind tunnel would not have predicted this! Pity the rest of the Seigla seems pretty aggressively non-aero. The downtube is a triangle with the flat side facing forward FFS. Oh well, I definitely didn’t get this bike or the aero gains so as you said, “not as bad as you might think” is a win.
To me it looks more aero than a standard fork, just due to its width. Put a fairing on it and it’ll probably be even faster lol.
I bought a Seigla with the Grit fork last year, and just assumed the fork was slower than a normal rigid unit (I’m not a racer, so I don’t care). I mean, yeah, the leading edge of the fork blades are wedge-shaped, but the leaf springs and doglegs out back look like an aerodynamic mess. Would love Josh and Silca to do some more research and tell us what they find out.
I’m far from an aero expert, but I always hear that even the experts are often surprised by results that seem to fly in the face of common principles. I still struggle with how much difference it can make by just directing flow, even when comparing a much bigger object. I always struggle with this example comparing a round wire to an airfoil and that the huge airfoil makes up for it’s frontal surface area by giving the air a better path compared to the round wire. So, all that big chunky stuff on that Lauf fork must be doing something positive. Or lauf is the new USWE and they are both paying silca and dylan to fabricate aero results to sell more stuff…

Well, I just assumed the leading edge wedge of the fork blades directed airflow around the springs behind the fork blades. Smooth airflow is critical and all those rough different shapes would seem to make for turbulent airflow.
. But yeah, even Josh was surprised, so that’s interesting.
Now if they put spring at an angle to push air away maybe you can have a bigger foil
How do you describe Ben’s delivery? I like it. It’s a combination of both accent and personal style that I don’t have words for.
I struggle with it, TBH….while I find his content to be pretty good overall, his delivery is tough for me. The pauses, hesitations and overall cadence of his sentences is off putting to me.
But if you see him speak outside of his videos, he has a more normal cadence and rhythm to his speech.
Let’s not be negative here
The William Shatner School of Diction.
Keep on mind that the fork is next to a spinning wheel, and probably not cutting though clean air. I’m not any kind of expert, but I suspect this might be a factor in why results weren’t as expected.