Cool Tech: VYRO's Multi-Segment Gear System
This is pretty cool. It's another possible solution to dropping the front derailleur once and for all.
The highlight of the VYRO gear system is the four piece segmented chainring. Each of these segments are mounted on top of a tilted pin. The segments are pivoted into the chain line and forced into operation (pause the video at 2:08 to see it in action). Gradually, the rest of the segments are fed into or out of the chain line until the gear is changed completely. This process can happen at any time, even during hard loads, because the chain is always moving in a straight direction. It only takes 1/4 of a turn to start the movement, providing near instant shifts.
The whole assembly is sandwiched by inner and outer guide rings that supposedly eliminate the need for a traditional chain guide.
For more details or to help support VYRO's idea, cruise over to www.vyro.com.
bturman 8/3/2012 1:09 AM
15 comments newest first
I'm still a bit confused by it though, so let me get it strait. Both chainrings move over when you shift gears, so that the chainline doesn't change right? Like the free space in the so when you shift the chaingrings just shift over?
Looks very efficient. I'm very interested. Good work.
I am the inventor of VYRO. Thanks for the honor. I hope I am welcome heare to add my comments. It has nothing to do with the Suntour principle. At this priciple the segment is only used to be a bridge between the currentn and the dailed gear. At my principle we really switch the segments into the chain line. So the chain stays always in exact the same position which makes it possible to guide it from both sides - the inner and outer. In the video the chain is really jumping because on this prototype we thought we can use a self lasered chain ring segment to run on a 11gear chain. This was obviously a msitake auctually because we were not able to propperly copy the tooth geometry. It runs perfectly round now when we use parts of standard shain rings.
So there has been for sure no principle like this on the market. I know because we invested a lot into patent research.
Dirt & Mud - well still a point we need to rpopperly figure aout. But generally we designed the prototypes very "open" so that the dirt will fall out again. I think it will run as long as a usual system will run too. If you apply a pounf of real mud every system will fail.
Still kudos for thinking outside the box and coming up with an impressive solution.
it looks like the chain jumps while he's turning the crank? anyone else seeing that?
Simplest and lightest solution to the problem.
That being said this looks pretty cool.