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The prize is for the belt, not the gearbox. It just happens you need a gearbox if you want to run a belt.

Ext aria v2 coming soon.

I'm waiting for drivetrain-free systems to catch on. Aaron Gwin demonstrated the benefits of pedal-free DH long ago, but sponsorship for that approach seems to be lacking. Imagine, no DR, no cassette, no chain, freedom to use any crank length or even pegs if you want.

Gates also sponsors the teams that are running the gearbox / belt. I suspect cash was involved, not just product.

Is 100k actually a carrot? Hardware development is expensive, I'm certain Atherton didn't developed their gearbox bike for less than 100k. I feel like riding a winning platform is more valuable than the prize money.

Why don’t DGI just spec electronic suspension to cancel out the inefficiency of gearboxes, are they stupid?

How many of those DH teams do you think would be running gearboxes right now if there wasn't a €100k carrot being dangled before them?

If you asked Pivot it would be 435

I need a high pivot CVT. What should my chainstay length be?

As long as this is now an "innovation of CVTs for bikes" thread, I think it's key to point out that the conventional 1x12 drive train is roughly constant efficiency in all gears, slight worse for cross-chaining, and slight worse for smaller cogs due to increased internal friction in the chain links bending around small cogs. There's data for this kind of thing online. When we are talking about gearboxes with and without CVTs, we still have to pay most of the efficiency loss that a conventional drivetrain sees, since we still need a belt or chain to reach from...

I think the selling point for CVTs in ICE-driven systems is that often gas engines have a pretty narrow torque band where they are efficient, with efficiency dropping off quite a bit outside of the band. A standard transmission with maybe 4 to 6 gears will end up just having a couple of sweet spots where efficiency is good. The CVT allows the system to live in the efficient band most/all of the time. Commercial 18-wheeler-type drives have staged transmissions to get them many more points where the system is good, much like our 12-speed drivetrains. They pop through 4...

Little insight I got. July release for yeti Avinox cvt system is not 100% and far out from coming to the market. Apparently issues with the system auto shifting down when rider puts high watts combine with motor. Sounds like System protecting itself. Not sure if this is just a software or the system not being able to handle it. We’ll see. Some high ups in specialized are not happy. A nasty email sent to engineers/ product developers to step it up and motor/gearbox combo bike priority 1 Specialized has an unreleased bike the industry will get to see at...

Riders' goals matter, this is where racing and daily riding for nine-to-fivers diverge. Enduro and DH racers want the fastest speed going down, recreational riders are looking for the best compromise to reduce suffering on the way up. The people I ride with only care about speed when climbing . For descending we want confidence and predictability. Confidence = speed for us. The tire that is fastest descending changes 150 times a year based on the specific trail and the amount of moisture (or complete lack thereof). My ideal tires for a weekday lunch ride on Galbraith flowy stuff are...

Being "over-tire'd" is a thing. I hate fixing a pinch flat on the trail as much as the next guy but I'm not gonna put DH tires with Cush Core on my daily driver. Speaking of tires, Maxxis and conti have yet to release a radial ya? I vaguely remember this forum mention it in the works once or twice. I'm not interested in running them myself, but I could go for some "new release" kool-aid.

Dario from PB was riding one at Sun Peaks July 2/3 (think they were doing a field test, saw Matt Beer and Jesse Melamed aswell). He just grinned at the question of how to compares to the old one. Dunno if was anything but I also saw a Banshee DH bike at Silverstar two days later with a bunch of telemetry related stuff on the rear of the bike, not keen enough to have noticed if it was a revised Legend or if it pertained to the rear shock (didn't recognize it)

Let me say more clearly what was implied in my previous post: those old road bike rolling resistance tests tell me that our own internal rolling resistance gauges in our brains are not very trustworthy. I'm not convinced that radial tires roll slower because the only evidence we have is that they feel like they roll slower. 21mm tires pumped up to 120 psi feel fast as hell on asphalt. As you go faster, you get more and more vibration feedback from the tire, giving the sensation of greater and greater speed. A 32mm tubeless GP5000 pumped up to 60...

It wont this year. They made the mistake of designing it without a gearbox. Scrapping the whole lower half of the bike.

Slow clap. Part of the reason why road bikes came with 19-23mm tires pumped up to 120+ psi is because they felt faster than bigger or softer tires, and because of flawed test methodology (testing tires on smooth steel drums in a lab vs. testing on real asphalt). I've heard a lot of people in the tire forum say that radials roll slower, and they certainly might. But until I see actual test results using a methodology that makes sense, I'm going to assume that no one knows the answer to that question.

I have both a singlespeed and Zerode Katipo with 12spd analog Pinion gearbox. Constant drive lines FTW. Never having to worry about maintaining, hearing or shearing off a derailleur is far worth any drag compromise. Any noticeable "drag" is on gears higher than 6-7, plus shifting from say 5th to 2nd gear is instant, not a massive clunky chain moving event. That said I don't see current gearboxes being relevant for anything less than enduro or heavy duty trail bike applications. /2c