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chriskief Added a reply to 2026 MTB Tech Rumors and Innovation - Longer and Slacker
7/27/2026 9:43am Things are looking Blur-ry
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CascadeComponents Liked a reply to forum topic 2026 MTB Tech Rumors and Innovation - Longer and Slacker
7/25/2026 6:28pm And then next thing you know there’ll be position sensitive damping and I’ll be sitting here wondering why so much complexity has been added all to solve something easily doable with a linkage. Springs in series result in a crazy low initial spring rate unless you’ve got at least one very stiff spring in there. Half of what they help with in off road applications doesn’t apply to bikes at all. In theory it does let you pick an initial sprint rate, final spring rate, and transition point, but without winding your own springs the customization available is surprisingly limited.
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TEAMROBOT Liked a reply to forum topic 2026 MTB Tech Rumors and Innovation - Longer and Slacker
7/25/2026 2:52pm One thing that's desirable about the Foes method pictured here is that when the progression comes from the spring instead of from the leverage rate, it doesn't spike or slow the shaft speed at various positions in the shock travel, which can adversely change the damping feel at various points in the travel. One downside is that it's a whole mess of springs you need to have on hand to sort through until you find your desired ride height and suspension feel. In the case of this Foes they're also expensive titanium springs. My suspicion is that 99% of riders...
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chriskief Added a reply to 2026 MTB Tech Rumors and Innovation - Longer and Slacker
7/25/2026 2:21pm 2006 Foes Curnutt
chriskief Added a reply to 2026 MTB Tech Rumors and Innovation - Longer and Slacker
7/24/2026 6:16pm I believe it's the drive side that moves over 9mm because the change in width is on the drive side due to the slimmer driver. For example, the One Up 157 hub has a left flange distance of 35 and a right flange distance of 26. These become equal (35) with the XD Slim. According to Hope, their 148 DH...
TEAMROBOT Liked a reply to forum topic 2026 MTB Tech Rumors and Innovation - Longer and Slacker
7/24/2026 3:14pm I love that you think gearboxes will become ubiquitous on ebikes and will entirely replace mechanical derailleurs and electronic battery-powered derailleurs and electronic hard-wired derailleurs and autoshift derailleurs and internally geared hubs, instead of becoming one more option among a confusing sea of options and pricepoints, like everything else in the bike industry. If only it were that simple.
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chriskief Added a reply to 2026 MTB Tech Rumors and Innovation - Longer and Slacker
7/24/2026 7:24am True, but with a narrower flange offset than will be possible with a slim driver.
jones007 Liked a reply to forum topic 2026 MTB Tech Rumors and Innovation - Longer and Slacker
7/23/2026 5:10pm If I'm doing the math right, with the slim driver, the both flanges move 4.5mm to the right, and the wheel should have symmetric bracing left and right. Probably want to use a rim without offset nipples. Should make for a strong wheel, stronger actually than a conventional 157, due to the symmetric bracing.
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chriskief Added a reply to 2026 MTB Tech Rumors and Innovation - Longer and Slacker
7/23/2026 9:41am Yes, you would need to rebuild the wheel. You can’t just swap the drivers. Brake spacing on 157 and 148 boost hubs has always been the same I believe.
sspomer Liked a reply to forum topic 2026 MTB Tech Rumors and Innovation - Longer and Slacker
7/23/2026 9:18am
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segamethod Liked a reply to forum topic 2026 MTB Tech Rumors and Innovation - Longer and Slacker
7/23/2026 8:42am So, if we consider: Transmission drivetrains on super sale New XD slim driver released that fits low range cassettes Everyone on your local trails is riding (or seeking to ride) a 1300-1500W eMTB and chewing up their drivetrain in a few hours Do we conclude that SRAM has a new, e-bike specific, low range drivetrain on the horizon?
This forum topic has 5427 replies.
chriskief Added a reply to 2026 MTB Tech Rumors and Innovation - Longer and Slacker
7/23/2026 8:41am Feels like a safe bet as well as lower priced DH options. I can’t imagine a new driver was introduced only for 148mm DH bikes (there’s only a few) that want to use a 157mm hub.
chriskief Added a reply to 2026 MTB Tech Rumors and Innovation - Longer and Slacker
7/23/2026 8:05am Not sure if this was discussed previously, but it looks like the XD Slim driver allows you to run a 157mm hub (and get the benefits of wider flanges) on a 148mm frame... https://www.oneupcomponents.com/products/rear-hub-157x12 Another nail in the coffin for 157mm rear ends.
Jason_Schroeder Liked a reply to forum topic 2026 Race Talk
7/16/2026 11:47am
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Jason_Schroeder Liked a reply to forum topic 2026 Race Talk
7/15/2026 10:27am
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chriskief Added a comment about feature B.S. Podcast - The Rise of DJI - From Drones to E-Bikes
7/10/2026 6:41pm
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chriskief Added a comment about feature B.S. Podcast - The Rise of DJI - From Drones to E-Bikes
7/10/2026 3:22pm
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chriskief Added a reply to 2026 MTB Tech Rumors and Innovation - Longer and Slacker
7/10/2026 4:48am Gates also sponsors the teams that are running the gearbox / belt. I suspect cash was involved, not just product.
jessemelamed Liked a reply to forum topic 2026 MTB Tech Rumors and Innovation - Longer and Slacker
7/8/2026 6:03am 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?
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chriskief Added a reply to 2026 MTB Tech Rumors and Innovation - Longer and Slacker
7/7/2026 2:36pm I'd love to see some type of quasi-scientific test of this. The radials sure feel slower on hard pack jump trails. Maybe chainless A Line and measure average speed?