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Quoting measurements to 0.01mm on an aluminium mountain bike frame; they are very very over confident in the manufacturing capability of the factory.
"Estimated Bottom Bracket Height" at +/- 0.1mm. Now that's some pretty solid estimation skills.
It’s the barbell, high end is where the sales are. Being able to run the latest and “greatest” is important to those high end customers.
Modular dropouts could also be a solution for XL to have a geo corrected MX option. I know Kolb is testing MX on the XL.
I fully expect Sram to drop a lower price wireless later this season, they usually hold off the mid tier stuff for a few months.
I'm hearing similar talk about 30.5 (or 750d) from a small wheel manufacturer. 750d is out there already in gravel, but it might make the jump to MTB sooner rather than later. I've also heard about some brands size specific wheelsizes getting even more complicated, ie 27.5 on xs and s, 29 on medium, 32 on large and up, but that's not confirmed or anything.
Is it 750D because there's already been a 750A, B and C, or just because 650B and 700C?
The latter would make me sad.
600a, 650b, 700c, 750d
I guess 32” wheels would be 800e if anyone needs a free reason to get mad.
750d already existed in the same French sizing system that gave us 650b 700c etc: "In the French system, the first number is the nominal outside diameter in mm, followed by a letter code for the width: "A" is narrow, "D" is wide. The letter codes no longer correspond to the tire width, since narrow tires are often made for rim sizes that originally took wide tires; for example, 700 C was originally a wide size, but now is available in very narrow widths, with actual outside diameters as small as 660 mm."
https://www.sheldonbrown.com/tire-sizing.html
It was supposed to be replaced by ETRTO (now an ISO standard based on Bead Seat Diameter) but humans are weird and slow to change...
Hah! So it's just a coincidence? I can calm down now.
Props for the Sheldon Brown reference.
Good pod on this on pulp. Apparently the Aluminum prototypes were awesome and McGrath loved em, but before the bike went into production the engineers back at HQ (Japan) decided to beef up the chassis for safety/reliability reasons and totally ruined the chassis, making it too stiff. Assuming u are referencing the 98 CR250 of course.
probably just a new rear triangle.
Hi, does anybody in this thread know if someone ever made viscous damped ratcheting chainring before? Like O-Chain but with a one way clutch/ratchet system?
Guy was an absolute treasure for cycling and I'm so stoked they're keeping his site up in all it's 90's splendor...
is 750d gonna be fast and comfortable but not fun ? That would match the bmw 7 series of the same name !
It will be the goldilocks size like they said that 27.5 was supposed to be..
It isn't damped but Williams Racing Products does one of those.
Thanks a lot! I'm working on something like that myself.
"Must be used with a fixed rear hub. Any rear hub on the market can be “locked-out” by the way of zip ties." <- This is a bit weird though because the chain moves with the rear wheel all the time. My plan is more about chain retention and drivetrain interference
26in = 559mm which is actually 22in
27.5in/650b = 584mm which is 23in
29in/700c = 622mm which is 24.5in
30.5in/750d = 650mm which is 25.6in
32in = 686mm which is 27in
36in = 787mm = which is 31.0mm
Anyone have any info or predictions on the new specialized XC bike launching Tuesday?
Nominal tire diameter vs rim diamater baby
There are low quality leaked photos on MTBR of the shock layout and colors. The shock layout looks very similar to the Giant Anthem Advanced SL, so Specialized’s version of that or an Epic WC but scaled up to 120/120
Kinda like this. Epic ht, wc, epic, and ee were all scrunched together. Consolidating opens room to do more interesting things with HT and EE
Sounds like they have lightened the E8 frame quite a bit. No Swat box—rumored bolt-on garage. No EE version.
Late to the party, I had this comment opened in a tab in a browser on my computer and found it now.
It's not really a problem, they spec the dimensions of the O-rings as well: 5,5 mm ID x 1,3 mm for the lower case bolt o-ting and 149 mm ID x 2 mm for the cover perimeter seal. The local bearing/seals supplier has 148x2 in stock (149 only comes in a 3mm thickness). 5,5x1,3 isn't in stock, but 5,5x1,5 is, I'm guessing it shoooooould work in a pinch. or a 5x1,25 which is also in stock.
What I'm trying to say it's not a deal breaker, at least since they publish the data, which is something EVERYBODY should be doing. I shouldn't need to take the bearings out of my frame or hub and measure them to know which is correct. This last part holds true even for DT Swiss which nuked MY2019 XM1501 service data, you have to contact the local representative to try and get the info but 'they have no idea which is the correct' one. Caveat, our local importer/representative/whatever of Scott, Sram and Rock Shox is the worst possible when it comes to customer support.
Someone heard something about a new O-Chain? Nothing seems available on their homepage.
Should know more Tuesday
From Pinkbike. Also, the reach and stack a bit longer than the Epic 8. No mention of an Evo version. I’m thinking the new bike is a mix of the best attributes of the current Epic 8 and the discontinued Epic WC.
Good to see Them dropping Swat box. Now to get more brands to do the same.
https://www.tomshardware.com/3d-printing/new-metal-3d-printer-shrinks-industrial-tech-down-to-workbench-size-with-laser-powder-bed-fusion-system-aims-to-bring-laser-metal-printing-to-workshops-and-labs-for-usd9-600
Let's all go in on one.
It's cheaper than a lot of MTBs these days...
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