On 1/25/2019 5:09 PM, Zen Cycle wrote:
On Sunday, January 20, 2019 at 7:30:11 PM UTC-5, Sir Ridesalot wrote:
On Sunday, January 20, 2019 at 4:36:46 PM UTC-5, Mark J. wrote:
Check out the ninth photo in this gallery, apparently an orthopedic
device. I don't know anything beyond the caption, but the visuals are
quite striking.

https://www.velonews.com/2019/01/new...ng-camp_482921

Mark J.

Thank you for something BICYCLING related! LOL

I found the image with the derailleur hanger between the frame and the cassette to be pretty interesting. I(t's the first image that doesn't have riders in it. I've never seen such derailleur a setup before.

Cheers

It's a 'thru-axle' set up. They've been around on MTBs for quite a while. They offer greater stiffness at lighter weight. It's one of "standards" that aren't (like various BB 'standards'). The UCI has been allowing them in lieu of open dropouts with 'lawyer tabs' so expect to see greater cross compatibility as time goes on. Here's a primer on the technology:

http://www.bikebug.com/blog/everythi...ut-thru-axles/

Nice to see some bike tech discussion.

I note in that article, "Thru Axles (TA) originally were designed for
downhill riders years ago who were popping their front wheels out of
their front axles."

Does anyone remember the intense debates here about whether that problem
actually existed? Seems it's now well recognized.

--
- Frank Krygowski