[KenW449]

12x done already?

 

[KenW449]

Ceramicspeed? How long before this doesn't take off? I know on Motorcycles, shaft drives are the least efficient drive system, followed by belt and then chain. But maintenance on shaft drives are the lowest, with chains being the highest. I can only imagine this to be true with bicycles as well. So not sure how a shaft driven bike is 99% efficient.

I also realize this is a road bike, but the road thread sucks and I'm focusing on the drivetrain, not the bike.

 

[SkaredShtles]

No

 

[rideit]

Shimano's patent goes to 14.
Then, of course, it's the end of the world, so it's all over.
Like after GenZ.

 

[Electric_City]

I still prefer my 2x8 that I built with Park tools.

 

[jonKranked]

Shimano's patent goes to 14.
Then, of course, it's the end of the world, so it's all over.
Like after GenZ.

Wasn't that patent from the 90s at that? I remember hearing about them working on crazy stuff like single sided chains too.

 

[KenW449]

single sided chains too.

What kinda PFM are they using for that?

 

[Jm_]

What kinda PFM are they using for that?

Duboost.

 

[dcamp29]

Ceramicspeed? How long before this doesn't take off? I know on Motorcycles, shaft drives are the least efficient drive system, followed by belt and then chain. But maintenance on shaft drives are the lowest, with chains being the highest. I can only imagine this to be true with bicycles as well. So not sure how a shaft driven bike is 99% efficient.

Looks like that thing would place a massive amount of pressure on 2-3 teeth at a time... a chain spreads load over 1/2 the cog (roughly).

Mud might also be a problem?

 

[KenW449]

Looks like that thing would place a massive amount of pressure on 2-3 teeth at a time... a chain spreads load over 1/2 the cog (roughly).

Mud might also be a problem?

Likely, and it doesn't make full contact with the "chainring" like a differential type driveshaft would, so potential loss of power there?

 

[dcamp29]

Yeah- I can't imagine it's more efficient than a chain (nothing really is).

Also you can't stamp all the cogs due to the 3-D shape- so making it cheap is not going to be easy.

 

[Tantrum Cycles]

Now imagine it on a full suspension bike.. you could build plunge into the shaft to take "chain growth" into account, but maybe good luck keeping it engaged over rough terrain

 

[jonKranked]

Yeah- I can't imagine it's more efficient than a chain (nothing really is).

Also you can't stamp all the cogs due to the 3-D shape- so making it cheap is not going to be easy.

guys i think this is much ado about nothing. it's just a concept that they showed, i don't know if it's something they could realistically bring to market without being outrageously expensive.

 

[dcamp29]

Yeah- its a super cool concept. I think it's really innovative but lots of problems going forward from concept phase.

 

[KenW449]

Now imagine it on a full suspension bike.. you could build plunge into the shaft to take "chain growth" into account, but maybe good luck keeping it engaged over rough terrain

They do something similar with 2wd bikes.

 

[KenW449]

Now with a drivetrain like ceramic speed, wouldn't it be theoretically possible to put the cassette, (or whatever it's called), up front where the chain ring goes and put the chain ring on the wheel? Just add teeth to the outer most cog and switch it to chain drive. Would need to come up with a new front derailleur, but it would be lighter than a gearbox but still have the weight in the center of the bike.

 

[Gary]

I remember hearing about them working on crazy stuff like single sided chains too.

Annoyingly they already do single direction chains.

as required to fit their single direction jockey wheels.

Fuuuuck off