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Bike industry surprises everyone with new tech. Forum discusses its innovative nature and implications. Members start complaining about the relevance. Rinse and repeat.

Effigear had or has the option of a nonconcentric output. Cavaliere bikes used it in the past. As for two cassettes in a box, you actually need like two 11-25 cassettes to get 516% of range if you run them "back to front" like in the shimano patent. Two 10-50 cassettes, besides definitely not fitting, would give you 2500 % of range. That's a bit much.

Maybe this isn't an accurate point of view, but I feel like pedal MTBs and e-bikes aren't really trying to solve the same problems. I think a pretty massive effort goes into the design of pedal MTBs so that they can be comfortably and efficiently pedaled, at least outside of DH-specific bikes. Even enduro bikes, especially those that are raced, need to pedal decently. For an e-bike, pedal performance is probably pretty far down on the list of design goals. I've watched a handful of folks with dead batteries or faulty electronics try to pedal their 50-lb beasts out of...

I don't think most people articulate why they dismiss gearboxes very well, or at all haha. For me, I'm not too interested in them for a couple of reasons. Firstly, I don't have the issues with derailleurs that others seem to have, I don't smash them or snag them on rocks, and I race DH and enduro in Utah and Colorado so there are plenty of opportunities for me to do so. Secondly, I like mechanical drivetrains and don't like grip shifts. Unless I have missed something, all mechanical Gear boxes have to use a grip shift to pull cables...

Sharing some relevant bits from a text conversation with a friend of mine in the industry. They preferred to remain anonymous because they didn't want forum-dwellers mailing a bomb to their house: "Food for thought on brake rotors. I think anyone who’s making rotors in volume is not laser cutting. The super rounded edges on shimano rotors appear to be a choice. I’d bet significant sums of money that smaller brands do laser cut rotors because it’s easily accessible. [i.e. laser cutting and/or machining is cheaper at low volumes than stamping] Stamping introduces stress but so does laser cutting. Both...

More fairings showing up

Had to say it.

That’s an attractive mountain bicycle.

Know of any carbon XC bikes that use a gearbox? For the downhill and adventure crowd, gearboxes may be a reasonable solution, but the current offerings are not great for those of us that like to pedal a lot. Maybe they'll get there eventually, but at the moment they would add about 3.5 lbs to my 22 lb bike, while costing me a bit on efficiency. I'll stick with the 1860's technology until something observably better comes along.

Yeti Sixfinity enduro bike from la thuile pits here - https://www.vitalmtb.com/forums/hub/yeti-sixfinity-enduro-bike-spotted-… (in its own thread as to not disturb efficiency discussions : )

screenshot of insta post above

Leaves room to lap them yourself so they're flat...

The edges are rounded on both sides. Stamping/shearing does not normally produce that result.

Guys and gals, one less post ride beer will do what a $1k drivetrain can't do. Chill, and go ride your bikes (though maybe not today if you're in the heat zone)

Shut the fuck up about drivetrain efficiency. Holy shit. Go find a different thread.

Because they consume 2+ % more of your wattage, and that only gets worse the worse your chain maintenance gets! In addition, the idler produces more noise and potentially a rougher feel when pedaling, which can create a greater than 2% change in a subjective sense. Those losses are from chain link articulation on the highly tensioned top run of the chain: https://www.pinkbike.com/news/tested-how-much-slower-are-idler-bikes-wh… If you find evidence that electronic suspension will provide 2% gains, then it could offset the idler losses, when compared to a non idler/non electronic suspension bike, but you would still be 2% behind a non idler...

That’s as safe as betting that the Tech Rumors thread will be derailed in the next half hour.

77° effective STA and 70° true STA