Just got an early access email from RMU about their new bike the Nighttrain - 170/170 full 29 DW Orion dual chain. Pricing is good at...
Just got an early access email from RMU about their new bike the Nighttrain - 170/170 full 29 DW Orion dual chain. Pricing is good at $2500 frame/shock.
Quoting measurements to 0.01mm on an aluminium mountain bike frame; they are very very over confident in the manufacturing capability of the factory.
Just got an early access email from RMU about their new bike the Nighttrain - 170/170 full 29 DW Orion dual chain. Pricing is good at...
Just got an early access email from RMU about their new bike the Nighttrain - 170/170 full 29 DW Orion dual chain. Pricing is good at $2500 frame/shock.
DH bikes aren't made to have wide appeal to consumers, the current demo is an obvious sign of that. Respectfully, they do not care if the...
DH bikes aren't made to have wide appeal to consumers, the current demo is an obvious sign of that. Respectfully, they do not care if the consumer would be miffed at an expensive cassette or don't really care about total cost of the frame +/- 500-1000. Besides, it's not an either or... maintaining UDH compatibility still allows for cheaper, standard mount drivetrains that have a variety of cost options.
There is no reason that they wouldn't go to a UDH design when all of their other rear triangles are headed that direction. It seems obvious that they would go to a pivot swinging dropouts or a crestline style of rear dropout to support chainstay length adjustment while also utilizing UDH compatibility. (this would also facilitate Kolb potentially wanting to ride a full 29 setup if he is passionate about that) It also wouldn't surprise me if they just stuck with UDH and either a) did not provide multiple/adjustable rear dropouts for chainstay length and just told the riders to deal with it (it would not be the first time they have done this) or b) did the above mentioned adjustable dropouts yet still stuck with UDH or c) just made custom runs of rear triangles utilizing their in house carbon lab if it were that important to a given rider.
There is really no reason out there to design a derailleur hanger that is anything but UDH. Santa cruz is already making their own version of UDH hangers that are fully aluminum (instead of the sram partial plastic/aluminum versions). Seems crazy to think that they wouldn't apply that same engineering and computer/manufacturing detailing and programming to the DH bike.
The only thing I meant to say is that there's no reason to rush out an update for the rear triangle when there is only a...
The only thing I meant to say is that there's no reason to rush out an update for the rear triangle when there is only a single drivetrain on the market that makes use of it, and one that would make the adjustments the current bike has more complicated to impliment. The next V10 should have it, because you're right there isn't a good reason to not have it on the next bike. Maybe a mid run update would be worth it if Sram drops a mechanical, or lower price point axs version but I don't see that happening really soon.
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.
Most of you probably won't like hearing this. I certainly didn't.Earlier this week I had a chat with a guy who works in a product management...
Most of you probably won't like hearing this. I certainly didn't.
Earlier this week I had a chat with a guy who works in a product management role for Ralf Bohle GmbH, which is the owner of the Schwalbe tire brand. Mainly I asked a bunch of XC racing related questions, about compounds, casings, radial ply, rolling resistance testing, wheter we'll ever see the speediest XC casing with a black sidewall and why they felt they needed to change their naming scheme for casings and compounds.
The gist of it is that they are hard at work behind the scenes, because they are about to completely re-do their entire line-up of XC- and most of their gravel tires for 2027. For XC, basically, everything will change. Different casings, different compounds, different treads. Apparently this will also include XC tires with radial casings.
We also talked at length about the various advantages and disadvantages of 32" wheels for XC racing, as compared to 29" wheels. Long story short, the rep agreed that 32" won't be universally benefitial, but Schwalbe sees a lot of potential for tall riders and select courses.
I also asked wheter we'll see any 32" production tires soon, because the Rick XC Pro models that were on a bunch of 32" bikes at Sea Otter looked ready. To which he answered something to the effect of that they might soft launch the 32" Rick XC as an OEM-option to selected bike brands this year, but they are generally planning to launch the 32" XC models some time in 2027.
Now for the juiciest bit of information: The Schwalbe rep also mentioned that so far, outside of their XC product-line, their 32" and 30.5" tires are effectively still in prototyping stage as Schwalbe (and most bike brands) are trying to figure out the best use case for these new sizes (- plural!) and that specifications might still change according to demand. He refused to go into further detail when asked about 30.5" wheels.
So, yeah, 30.5" wheels are apparently a thing and one of the biggest tire manufacturers in the cycling industry anticipates them existing on production bikes in the not too distant future.
Prepare to have not one, but two new wheel sizes shoved down your throat, I guess.
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.
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...
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?
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...
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.
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."
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...
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.
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...
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."
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...
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."
They got it wrong all the time too. Honda in ‘97 being the prime example. How they didn’t listen to McGrath I’ll never understand.
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.
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?
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...
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."
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?
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
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...
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.
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...
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."
26in = 559mm which is actually 22in27.5in/650b = 584mm which is 23in29in/700c = 622mm which is 24.5in30.5in/750d = 650mm which is 25.6in32in = 686mm which is...
Anyone have any info or predictions on the new specialized XC bike launching Tuesday?
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
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...
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
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...
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
I skimmed through (both) service manuals, and there is...........a lot. 🧐 I'm still not sure about a couple of things-How is the BB bearings preloaded/adjusted? And...
I skimmed through (both) service manuals, and there is...........a lot. 🧐 I'm still not sure about a couple of things-
How is the BB bearings preloaded/adjusted? And is it just me or is the DS crank hanging waaaaay out from the BB bearing? I guess if they've gone back to a steel spindle it might be ok, but I would still be nervous about a worn BB scoring the spindle and causing a failure
“Hey do you guys have a spare HighGear perimeter seal and lower case bolt o-ring in stock? I’ve got a race this weekend.”
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.
Anyone have any info or predictions on the new specialized XC bike launching 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.
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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