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It depends on what question you are looking to answer. Race sim will tell you which tire you are faster on. If you want to know about rolling speed of radial Mary vs standard Mary for instance then Chung method can get you some numbers, but it's very difficult to do, especially offroad. Chung method assumes you are accurately repeating, so basically you can't use the brakes and things like that. The Golden cheetah software does have a tool to help with analysis though. The simplest way to compare rolling speed is with a section of trail with a U...

I could give this a go, would back to back race sim laps be enough to provide accurate results? At least in a way that it is consistently one way or the other?

Wild that shimano would long play something - anything for so long …

I have a semi reliable source claiming the Norco Team DH bike is embargoed for the weekend of the Whistler WC.

Two words in the title of this thread make everything relevant and on-topic. Tech and innovation. If there was strictly a “tech rumors” thread, it would inevitably discuss the technology that a product is competing against or replacing. There’s really no way around it. If you aren’t going to discuss the relevance of a new product or innovation, then what’s the point? As far as Ebike derailments go, the separate thread is nice. But you have to argue that 90% of the tech and innovation in MTB right now is because of Ebike market dynamics.

Everybody serving the gearbox coolaid and how ebikes are getting them and how that will trickle down to pedal bikes, remember that the Avinox and Gaobao or whatever they are called have a CVT gearbox using two electric motors. That kind of a "gearbox" (integrated variable transmission to be precise) is wholly incompatible with bikes that do not have batteries. The only viable gearbox option covering both ebikes and bikes is the Pinion which is, functionally (speaking in volumes), non existent in both camps. As @Shinook and @Uncle Cliffy have said, the future has been promised for years now with...

FWIW regarding upcoming gearbox ebikes and trickledown to classic bikes, it's a big no. The way these gearbox concepts from Avinox and Gobao work requires an electric motor, so it's a no go for a non electric bicycle. As for shifters, Pinion has electric shifting via triggers and Effigear always supported trigger shifting, but brings it's own problems in regards to shifting with it. Regardless if the benefits it's quite likely the current crop of gearboxes would indeed be a no go for the average rider based on the limitations they bring with them.

May have been brought up before, but heard Norco Aurum release planned for Whistler World Cup weekend.

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...

Honest question: Why do y'all hate stamped rotors so much? Not saying you're wrong, because honestly I haven't used a stamped brake rotor in a long long time, or maybe ever. Just curious for more info. Here are the possible theories I can think of, and I'm curious what y'all think: A) Stamped rotors are more likely to be warped than laser cut rotors, either because of extreme heat or because they're just more likely to be warped out of the box. B] Stamping creates punch distortion, which creates an un-level and uneven braking surface that pulses, vibrates, creates uneven...