Ceramicspeed has come out with an OSPW Aero System. Interesting.
It seems VERY similar to the SLF Aero System that’s been out for years.
Correct me if I’m wrong, but didn’t CS attempt legal action against SLF a while back regarding “copying†them ? And according to their GoFund Me page last year for investing in Driven (chainless drivetrain), isn’t that the actual future ??
Considering their pulleys don’t do crap I’d just assume this doesn’t do crap either.
Considering their pulleys don’t do crap I’d just assume this doesn’t do crap either.
oh but you’re wrong… it makes their company profit off of snake oil products!
Berner was the first to do it that I remember, maybe Raltech around the same time. Over a decade ago for sure.
JoshatSilca had a small tidbit to their effectiveness in this thread, the tl;dr - Berner at the time vs SRAM Red (~2010) was measurable albeit only just.
They look cool though
Considering their pulleys don’t do crap I’d just assume this doesn’t do crap either.
They make your bike lighter by removing all of the cash from your pockets.
I was talking to Simon Smart of D2Z who designed this yesterday and he said this is actually one of the most complicated bike projects he has done. Why? Because the rear mech moves in and out relative to the frame which none of the other components do, wheels, frame, tribars etc. But the pully cage also rotates as you change gear. It is downstream of the airflow from the legs and cranks and can be right next to the wheel. So there is an awful lot going on. Just whacking a vaguely airfoil shaped cover over it could well be much worse than just the cage. So if you want a product with real R&D from a aerodynamicist with CFD and multiple prototypes in a wind tunnel then go for this. If you want to botch something with a model plane kit and some duck tape and save yourself some money then go for it but the results might be somewhat disappointing if not counterproductive.
Just whacking a vaguely airfoil shaped cover over it
That’s kind of what it looks like though. 
Though I’m sure there were many hours of CFD and wind tunnel work.
The look of it from the non-driveside looks to be still some sort of prototype. I really hope that’s not the finished product worthy of $800!
Yes, at least ship it with black rather than silver hardware
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Just whacking a vaguely airfoil shaped cover over it
That’s kind of what it looks like though. Though I’m sure there were many hours of CFD and wind tunnel work.
But how loud are they? Tossing up between this and an Absolute Black cage???
That’s what all the really super duper successful companies are doing… instead of designing their own novel ideas that work… they wait 2 years, steal someone else’s tech, make it out of damn near pressed cardboard, make it look shitty, then pay a bunch of industry news outlets and forums to “lose their minds” over how great this “new” tech is. SLF Motion spear headed the industry with their Aero system … two years ago! And pretty sure they are made out of actual carbon fiber or Ti and look sick as hell!.. just my .02
That’s what all the really super duper successful companies are doing… instead of designing their own novel ideas that work… they wait 2 years, steal someone else’s tech, make it out of damn near pressed cardboard, make it look shitty, then pay a bunch of industry news outlets and forums to “lose their minds” over how great this “new” tech is. SLF Motion spear headed the industry with their Aero system … two years ago! And pretty sure they are made out of actual carbon fiber or Ti and look sick as hell!.. just my .02
Most of the companies you’ve heard of spend more on marketing than R&D. That’s why you’ve heard of them. It sucks
That’s what all the really super duper successful companies are doing… instead of designing their own novel ideas that work… they wait 2 years, steal someone else’s tech, make it out of damn near pressed cardboard, make it look shitty, then pay a bunch of industry news outlets and forums to “lose their minds” over how great this “new” tech is. SLF Motion spear headed the industry with their Aero system … two years ago! And pretty sure they are made out of actual carbon fiber or Ti and look sick as hell!.. just my .02
Most of the companies you’ve heard of spend more on marketing than R&D. That’s why you’ve heard of them. It sucks
Agreed. The Ceramic Speed oversized cage is a POS IMHO made of plastic not carbon and trialling Osymetic rings I had a missed shift and the cage snapped in half. Not sure how Absolute Black now market their cages on noise rather than performance to justify spending that much. Can’t say I notice the noise from any of my existing cages including cheap oversized ones I have used off Ebay. The watt saving will be about as minimal as saved by using their overpriced bearings…
Did Simon say anything about the potential aero gain?
OSPW does give a 1,5-2,5 watt lower friction, but I believe that the aero penalty might offset at least half of it. But with the aero version it might be a total gain of around 3 - 5 watts? Or am I way off?
Did Simon say anything about the potential aero gain?
OSPW does give a 1,5-2,5 watt lower friction, but I believe that the aero penalty might offset at least half of it. But with the aero version it might be a total gain of around 3 - 5 watts? Or am I way off?
In tunnel runs at 50kmh I have seen the OSPW cages cost 2-3W in aero drag (but like everything aerodynamic is varies per person) so for a fast TT rider it is debatable if an OSPW is actually worth it. That is why I persuaded Simon to start work in this back in 2017 and he may be cursing me now! So the friction saving you make might be cancelled out by drag. I think the aim here was to try and nullify that extra drag. The problem with making any claims on gains is it would be specific to a bike/bike&rider system and what gear it was setup in. It would be possible to put it in certain positions (my guess the biggest sprocket right next to the wheel and with the cage fully rotated forward) and it might be no better than or worse than a standard cage. You wouldn’t be doing 50kmh in your largest sprocket unless you has a 100T chainring but it could be manipulated that way in a tunnel. Likewise if you ran it at high YAW from the left on a TT bike with a disc wheel the airflow to the mech would be shielded
Bob
Off course there is a lot of ifs and buts regarding the actual real world benefits of the aero OSPW. Somehow I think that CS will come up with bold claims for selling a $800 product.
I have not bought an classic OSPW since I suspected a small aero penalty which is a big deal when the reduced friction is also small.
I am very doubtful if I should go for it or not 🤷ðŸ¼
Page appears missing?
Ceramic speed have published a white paper here:
https://www.ceramicspeed.com/media/qaopyhvj/whitepaper_ospw_aero.pdf
Bob
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Ceramic speed have published a white paper here:
https://www.ceramicspeed.com/media/qaopyhvj/whitepaper_ospw_aero.pdf
Bob
Bottom line:
The realized gains (“real-world speeds and distances”) were
that an athlete using a CeramicSpeed OSPW Aero in a 180km
TT, holding 35 kph will cover each kilometre 0.25 sec less
than . . running a stock pulley system," would result in a bike leg time 45 secs less.
From the graphs:
At 45kph the saving would be about 21 secs.
At 35kph, an OSPW Aero v an OSPW would save ~11 secs and about 7 secs at 45kph.
Go for it, you watt monsters. If I have this wrong, please say so.
Hambini’s take: https://www.youtube.com/watch?v=6ALlHl2O3-M