Ceramicspeed Driven - shifting teaser
Moderator: robbosmans
There are a few problems I see with this.
1. Hardened bearings on to a comparatively soft machined gear wheel - the bearings will chew the gears up
2. The drive side chain stay is elevated so the wheel is effectively cantilevered
3. You've got a counter torque on the drive side chain stay so that will need reinforcing.
4. It has been designed by Ceramicspeed, a company that has very questionable engineering.
1. Hardened bearings on to a comparatively soft machined gear wheel - the bearings will chew the gears up
2. The drive side chain stay is elevated so the wheel is effectively cantilevered
3. You've got a counter torque on the drive side chain stay so that will need reinforcing.
4. It has been designed by Ceramicspeed, a company that has very questionable engineering.
Hambini Aeronautical Engineer, Polluting YouTube since 2016 - views expressed are my own...
Visit starbike.com Online Retailer for HighEnd cycling components
Great Prices ✓ Broad Selection ✓ Worldwide Delivery ✓
www.starbike.com
I saw a pic with a 'cowl' covering it all.... seems miles of being a 'race ready' idea.. but innovaton is a good thing and as long as they continue with this, you never know it could what we're all using on our commuting bikes/ tandems / cargo bikes in a few years time.. perhaps if it were enclosed it could be a decent alternative to internal Roholff style gears?
I cant imagine it would be workable off road solution at the moment. I know when riding gravel. CX or MTB at times my chain can get totally covered in crap. Even with a cover there'd have to be a gap somehwere? Any decent sized build up going in to the mechanism could cause chaos.
Who knows though, it could be a big part of cycling. Maybe town and commmuter style bikes if they can bring it in at a good price.
I dont actually see it working on top end bikes that are either ridden in extreme conditions or super aggresively.
Who knows though, it could be a big part of cycling. Maybe town and commmuter style bikes if they can bring it in at a good price.
I dont actually see it working on top end bikes that are either ridden in extreme conditions or super aggresively.
-
- Posts: 12566
- Joined: Mon Jul 24, 2017 12:02 pm
This is ridiculous. Chain drives already work perfectly fine for urban/commuter bikes. They are simple and cheap...how on earth would this ever compete in that space? Why would someone riding along at 100W on a townie need that theoretical 1W so badly?
Hell, the only way to get this system to shift is with electronics.
Tobin
It's more I cant see it really working at extremes so I was picking a form of cycling that it isnt either super dirty and brutal or with massive power.
Like I said, it would only be if it was at a good price.
I was just adding an option.
And by the way... Your face is ridiculous.
Edit; Just seen the pics of it all covered, it actually looks stunning!
It's more I cant see it really working at extremes so I was picking a form of cycling that it isnt either super dirty and brutal or with massive power.
Like I said, it would only be if it was at a good price.
I was just adding an option.
And by the way... Your face is ridiculous.
Edit; Just seen the pics of it all covered, it actually looks stunning!
I don't think we'll all be riding this drivetrain anytime soon, but I applaud them for doing *any*thing new.
It takes wild ventures like this to discover something that drives industry forward. The whole solution likely isn't going to survive, but it might uncover some little efficiency that changes how drivetrains function down the road. I personally don't see what that possibly might be, but still good for them for doing something different.
It takes wild ventures like this to discover something that drives industry forward. The whole solution likely isn't going to survive, but it might uncover some little efficiency that changes how drivetrains function down the road. I personally don't see what that possibly might be, but still good for them for doing something different.
This^
Not all prototypes make it but not to try will certainly allow it never to be made. I remember my first lightweight bike was 23lbs [1978]. With all the prototypes that have come and gone, everyone can buy a 16lb bike off the showroom.
Not all prototypes make it but not to try will certainly allow it never to be made. I remember my first lightweight bike was 23lbs [1978]. With all the prototypes that have come and gone, everyone can buy a 16lb bike off the showroom.
Innovation is imperative to any industry. They should be applauded for getting the project(s) this far.
Sent from my EVA-L09 using Tapatalk
Sent from my EVA-L09 using Tapatalk
Specialized S-Works Venge Disc | 7.8kg
Rose Backroad | 9kg (Deceased R.I.P.)
Canyon Ultimate CF SL | 7.7kg
https://www.findyourroad.co.uk/
Instagram: @miles_bc
Rose Backroad | 9kg (Deceased R.I.P.)
Canyon Ultimate CF SL | 7.7kg
https://www.findyourroad.co.uk/
Instagram: @miles_bc
-
- Posts: 12566
- Joined: Mon Jul 24, 2017 12:02 pm
“Your scientists were so preoccupied with whether or not they could, they didn't stop to think if they should.”
I still don’t see how a system that abruptly changes the direction of force twice can have any advantage in efficiency...and also requires reinforcement at vectors not needed before...and with all the force transferred through less surface area...
Shaft drive has already been used for commuter and freight bikes.
Not for efficiency, but durability.
They are basically single shot, last the life of the bike things, pretty much just need a squirt of grease in each joint once a year.
But that's not glamorous or profitable enough for ceramicspeed.........
Not for efficiency, but durability.
They are basically single shot, last the life of the bike things, pretty much just need a squirt of grease in each joint once a year.
But that's not glamorous or profitable enough for ceramicspeed.........
HOW MUCH per watt??!!!! If it ever worked!
https://youtu.be/ryx5sDPkMUQ
https://youtu.be/ryx5sDPkMUQ
Fake it, till you make it. Didn't work for Theranos.
In thinking about this matter, I consider Ceramicspeed the George Costanza of the industry, as in the Seinfeld episode (The Wizard) where he brags to Susan’s parents about owning a place in the Hamptons and then piles on phony details and drives them all the way to his nonexistent place when his bluff his called. “So, you bike cognoscenti were skeptical of Driven when we teased it earlier this year [e.g., I saw it at NABHS]? Well, now we’ve run it through the wind tunnel and fixed it to change gears electronically!” Kind of like Snoopy and Prickly Pete.
(I apologize for the USA- or certain generation- parochialism of the references, but they fit and I could not resist. . Hope you liked it, I’ll be appearing later this week at the local Laugh Factory.)
(I apologize for the USA- or certain generation- parochialism of the references, but they fit and I could not resist. . Hope you liked it, I’ll be appearing later this week at the local Laugh Factory.)
Cannondale Supersixevo 4 (7.05 kg)
Retired: Chapter2, Tarmac SWorks SL6, Orbea, Dogma F8\F10, LOW, Wilier, Ridley Noah, Cervelo R3\R5\S2\Aspero, Time Fluidity, Lapierre Pulsium, Cyfac, Felt, Klein, Cannondale pre-CAAD aluminum
Retired: Chapter2, Tarmac SWorks SL6, Orbea, Dogma F8\F10, LOW, Wilier, Ridley Noah, Cervelo R3\R5\S2\Aspero, Time Fluidity, Lapierre Pulsium, Cyfac, Felt, Klein, Cannondale pre-CAAD aluminum
If it can handle up to 200W let's see it being actually used by someone. I'm ok with seeing it on rollers and I'm even ok with them slowing down to change gear. I'll wait.
In five years we're going to be talking about this twice a year like "remember that ceramic speed drivetrain? lol".
In five years we're going to be talking about this twice a year like "remember that ceramic speed drivetrain? lol".
How dare you apologise for a Seinfeld reference? You suck.Stendhal wrote: ↑Sat Sep 07, 2019 4:18 pmIn thinking about this matter, I consider Ceramicspeed the George Costanza of the industry, as in the Seinfeld episode (The Wizard) where he brags to Susan’s parents about owning a place in the Hamptons and then piles on phony details and drives them all the way to his nonexistent place when his bluff his called. “So, you bike cognoscenti were skeptical of Driven when we teased it earlier this year [e.g., I saw it at NABHS]? Well, now we’ve run it through the wind tunnel and fixed it to change gears electronically!” Kind of like Snoopy and Prickly Pete.
(I apologize for the USA- or certain generation- parochialism of the references, but they fit and I could not resist. . Hope you liked it, I’ll be appearing later this week at the local Laugh Factory.)
Visit starbike.com Online Retailer for HighEnd cycling components
Great Prices ✓ Broad Selection ✓ Worldwide Delivery ✓
www.starbike.com