From the other site. Someone at Sram is having a chuckle ;)
From the other site. Someone at Sram is having a chuckle
don't think anybody's pointed it out yet, but I just noticed these are using the same bleed screw as the DB8s, implying they're running mineral oil. incoming mineral oil Codes?
don't think anybody's pointed it out yet, but I just noticed these are using the same bleed screw as the DB8s, implying they're running mineral oil...
don't think anybody's pointed it out yet, but I just noticed these are using the same bleed screw as the DB8s, implying they're running mineral oil. incoming mineral oil Codes?
It's the lever for the new DH brake that we've seen some pit photos of. People have been saying their name is Maven.
don't think anybody's pointed it out yet, but I just noticed these are using the same bleed screw as the DB8s, implying they're running mineral oil...
don't think anybody's pointed it out yet, but I just noticed these are using the same bleed screw as the DB8s, implying they're running mineral oil. incoming mineral oil Codes?
there were already pictures posted of these upcoming brakes being bled which pretty much confirmed they‘re mineral oil.
Same one that is BOD just with different bar and stem?
Honestly yeah looks a lot like the bike I saw…. That has a pile of FSA parts in front of the tent they had here….maybe they are testing some new stuff?
Hey Jesse, I know you're a trained engineer and you're probably smarter than me and work for SRAM and I'm just some guy, but I've read...
Hey Jesse, I know you're a trained engineer and you're probably smarter than me and work for SRAM and I'm just some guy, but I've read that the SRAM Transmission does not use electronics to sense the shift gates in the cassette in order to sync the derailleur movements to match in time. Instead, the shift movement of the derailleur cage is instantaneous when you hit the button, and the delay you observe is from the chain waiting for a shift gate in the cassette to travel through the gate and change gears. The pronounced shift gates in the cassette (and perhaps the proprietary T-type chain shape) are what allow seamless shifting under load, not the derailleur per se. So it doesn't need to be electronic to shift real good like.
Thanks for the compliments but we all know you're not just 'some guy', and I'm just a bike nerd like the rest. What you are saying...
Thanks for the compliments but we all know you're not just 'some guy', and I'm just a bike nerd like the rest. What you are saying makes sense.
All I really have is a lot of ride time on the new Transmission, as well as the older AXS on some of my other bikes. All I said was the electronics help when the derailleur will shift. It doesn't 'sense' this, it just has a map of all the of ramps in the cassette. So it knows the gear you are in, which way you have shifted, and roughly how long the delay will be until the chain hits the shift ramp, so it puts the derailleur into position to catch the ramp, and then finishes the shift when the ramp is met. Like the guys said previously, we have been able to do this with our thumbs on downshifts, slightly pressing the lever and letting the derailleur catch the ramp before finishing the click. Transmission does that by itself, and the best part about that is I will come into a climb I didn't expect and be able to press a button and be turning over into an easier gear while only thinking about cranking up the steep pitch. I wasn't bold enough before to shift while under significant load like that for fear of breaking my chain, that fear was probably unfounded as Shimano does make a great drivetrain, but now I don't have that worry. I do like the idea about the clutch in the derailleur where it will only shift under certain pressure, that could be the solution for mechanical.
But I haven't been able to do that on upshifts. On transmission I personally feel this is when I need to grab a handful of gears trying to get back up to speed. If I have to go click-click-click, it won't mangle 3 gear shifts at once, instead it's a steady, consistent shift for 3 gears.
The main point here is definitely to do single shifts only. With normal mechanical shifters you were able to shift up to 5 gears at one...
The main point here is definitely to do single shifts only. With normal mechanical shifters you were able to shift up to 5 gears at one push. This would be way to fast to synchronise the chain and the cassette and you would end up with the chain being mismatched with the narrow-wide teeth. Shimano introduced mechanical linkglide xt two years ago, it does almost the same thing as transmission, it uses a stronger narrow-wide teeth profil and more pronounced shift ramps to make sure each shift is perfectly synchronised. The matching mechanical shifter is an "E-Bike" shifter, that only allows for single shifts and therefore slows down the shift speed significantly. So from my point of view there is no real reason why transmission could not be mechanical, but to shift properly, it would need an single push/single shift shifter, like the ones that are common on ebikes for years. I think this would a pretty hard sell for sram and they can easily hide that by going electronic. On the wireless shifter they can "cue" the shifts and change gears slowly without the user noticing it.
re: shifting speed between old axs and transmission, we highlighted this in our transmission video when it launched - cruise to 11:36 to see it. transmission is slow and steady vs old axs goes as fast as you click the shifter
Not so sure about the Magura brake hose though, unless that just happens to be a part swap.
Ah, good catch ! I did not take attention to the hose. Anyway, it seems to match with the GT from the BOD... I understand those are prototypes wheels from FSA (like the stem/bars from the other pic) then
Hey Jesse, I know you're a trained engineer and you're probably smarter than me and work for SRAM and I'm just some guy, but I've read...
Hey Jesse, I know you're a trained engineer and you're probably smarter than me and work for SRAM and I'm just some guy, but I've read that the SRAM Transmission does not use electronics to sense the shift gates in the cassette in order to sync the derailleur movements to match in time. Instead, the shift movement of the derailleur cage is instantaneous when you hit the button, and the delay you observe is from the chain waiting for a shift gate in the cassette to travel through the gate and change gears. The pronounced shift gates in the cassette (and perhaps the proprietary T-type chain shape) are what allow seamless shifting under load, not the derailleur per se. So it doesn't need to be electronic to shift real good like.
Thanks for the compliments but we all know you're not just 'some guy', and I'm just a bike nerd like the rest. What you are saying...
Thanks for the compliments but we all know you're not just 'some guy', and I'm just a bike nerd like the rest. What you are saying makes sense.
All I really have is a lot of ride time on the new Transmission, as well as the older AXS on some of my other bikes. All I said was the electronics help when the derailleur will shift. It doesn't 'sense' this, it just has a map of all the of ramps in the cassette. So it knows the gear you are in, which way you have shifted, and roughly how long the delay will be until the chain hits the shift ramp, so it puts the derailleur into position to catch the ramp, and then finishes the shift when the ramp is met. Like the guys said previously, we have been able to do this with our thumbs on downshifts, slightly pressing the lever and letting the derailleur catch the ramp before finishing the click. Transmission does that by itself, and the best part about that is I will come into a climb I didn't expect and be able to press a button and be turning over into an easier gear while only thinking about cranking up the steep pitch. I wasn't bold enough before to shift while under significant load like that for fear of breaking my chain, that fear was probably unfounded as Shimano does make a great drivetrain, but now I don't have that worry. I do like the idea about the clutch in the derailleur where it will only shift under certain pressure, that could be the solution for mechanical.
But I haven't been able to do that on upshifts. On transmission I personally feel this is when I need to grab a handful of gears trying to get back up to speed. If I have to go click-click-click, it won't mangle 3 gear shifts at once, instead it's a steady, consistent shift for 3 gears.
So transmission delays by a preset amount depending upon what gear it's in, and what gear it's going to. So delay is based on an average cadence, right? Or perhaps on the high end of the range for normal cadences as being slightly early to catch the shift ramp would probably be better than slightly late to catch it. And by all accounts works great. What I'm getting at is that theoretically a small speed sensor could be incorporated into a pulley on the derailleur and the delay could be further optimized for distance to shift gate and exact speed at which the chain is moving. I'm not sure it'd improve performance all that much, probably not enough to justify the added complexity, but still interesting. Also it could be implemented for "free" on ebikes with corded transmission.
Hey Jesse, I know you're a trained engineer and you're probably smarter than me and work for SRAM and I'm just some guy, but I've read...
Hey Jesse, I know you're a trained engineer and you're probably smarter than me and work for SRAM and I'm just some guy, but I've read that the SRAM Transmission does not use electronics to sense the shift gates in the cassette in order to sync the derailleur movements to match in time. Instead, the shift movement of the derailleur cage is instantaneous when you hit the button, and the delay you observe is from the chain waiting for a shift gate in the cassette to travel through the gate and change gears. The pronounced shift gates in the cassette (and perhaps the proprietary T-type chain shape) are what allow seamless shifting under load, not the derailleur per se. So it doesn't need to be electronic to shift real good like.
Thanks for the compliments but we all know you're not just 'some guy', and I'm just a bike nerd like the rest. What you are saying...
Thanks for the compliments but we all know you're not just 'some guy', and I'm just a bike nerd like the rest. What you are saying makes sense.
All I really have is a lot of ride time on the new Transmission, as well as the older AXS on some of my other bikes. All I said was the electronics help when the derailleur will shift. It doesn't 'sense' this, it just has a map of all the of ramps in the cassette. So it knows the gear you are in, which way you have shifted, and roughly how long the delay will be until the chain hits the shift ramp, so it puts the derailleur into position to catch the ramp, and then finishes the shift when the ramp is met. Like the guys said previously, we have been able to do this with our thumbs on downshifts, slightly pressing the lever and letting the derailleur catch the ramp before finishing the click. Transmission does that by itself, and the best part about that is I will come into a climb I didn't expect and be able to press a button and be turning over into an easier gear while only thinking about cranking up the steep pitch. I wasn't bold enough before to shift while under significant load like that for fear of breaking my chain, that fear was probably unfounded as Shimano does make a great drivetrain, but now I don't have that worry. I do like the idea about the clutch in the derailleur where it will only shift under certain pressure, that could be the solution for mechanical.
But I haven't been able to do that on upshifts. On transmission I personally feel this is when I need to grab a handful of gears trying to get back up to speed. If I have to go click-click-click, it won't mangle 3 gear shifts at once, instead it's a steady, consistent shift for 3 gears.
So transmission delays by a preset amount depending upon what gear it's in, and what gear it's going to. So delay is based on an average...
So transmission delays by a preset amount depending upon what gear it's in, and what gear it's going to. So delay is based on an average cadence, right? Or perhaps on the high end of the range for normal cadences as being slightly early to catch the shift ramp would probably be better than slightly late to catch it. And by all accounts works great. What I'm getting at is that theoretically a small speed sensor could be incorporated into a pulley on the derailleur and the delay could be further optimized for distance to shift gate and exact speed at which the chain is moving. I'm not sure it'd improve performance all that much, probably not enough to justify the added complexity, but still interesting. Also it could be implemented for "free" on ebikes with corded transmission.
Just like I suggested above, difference is it can be achieved with existing hardware. Flight attendant cadence sensors are out there, and from what I can tell they are even compatible with non-sram cranks (there's an expanding plug version just looking at the diagrams). It would just require software at the moment to make it all work. If anything it would work even better than a pulley-sensor as they would be susceptible to any chain movement caused by the suspension. Hopefully SRAM listens....
Not sure if this has been posted before, but this is the GX transmission it seems.
https://www.specialized.com/us/en/stumpjumper-expert/p/200521?color=336223-200521
Not sure if this has been posted before, but this is the GX transmission it seems.
Not sure if this has been posted before, but this is the GX transmission it seems.
https://www.specialized.com/us/en/stumpjumper-expert/p/200521?color=336223-200521
Not sure if this has been posted before, but this is the GX transmission it seems.
Not sure if this has been posted before, but this is the GX transmission it seems.
https://www.specialized.com/us/en/stumpjumper-expert/p/200521?color=336223-200521
Not sure if this has been posted before, but this is the GX transmission it seems.
Tairin Wheels is going to release a silent freehub upgrade for their Shogun hub. I find this noteworthy because Tairin could have just released a new hub with the silent tech [which they are doing] and left it at that. Instead, they took the time to port it to an older product. Off the top of my head, I can't think of many companies that would go to the trouble. It's kind of like a frame manufacturer offering a way to swap out a derailleur hanger for a direct mount without having to buy an entirely new rear end or frame. Anyway, I think it's neat, and Jose is a good dude, so I'm getting one.
Tairin Wheels is going to release a silent freehub upgrade for their Shogun hub. I find this noteworthy because Tairin could have just released a new...
Tairin Wheels is going to release a silent freehub upgrade for their Shogun hub. I find this noteworthy because Tairin could have just released a new hub with the silent tech [which they are doing] and left it at that. Instead, they took the time to port it to an older product. Off the top of my head, I can't think of many companies that would go to the trouble. It's kind of like a frame manufacturer offering a way to swap out a derailleur hanger for a direct mount without having to buy an entirely new rear end or frame. Anyway, I think it's neat, and Jose is a good dude, so I'm getting one.
Backwards compatibility. Current owners can upgrade their hubs if wanted and new customers can just buy it outright.
Tairin Wheels is going to release a silent freehub upgrade for their Shogun hub. I find this noteworthy because Tairin could have just released a new...
Tairin Wheels is going to release a silent freehub upgrade for their Shogun hub. I find this noteworthy because Tairin could have just released a new hub with the silent tech [which they are doing] and left it at that. Instead, they took the time to port it to an older product. Off the top of my head, I can't think of many companies that would go to the trouble. It's kind of like a frame manufacturer offering a way to swap out a derailleur hanger for a direct mount without having to buy an entirely new rear end or frame. Anyway, I think it's neat, and Jose is a good dude, so I'm getting one.
I just saw the new Altitude and I wish I could say more but I cant. All I will say is I was shock in the direction they have gone in a good way. It'll be a very interesting bike and I haven't seen a correct rumor about it yet.
Has anyone graphed the kinematics of the supreme v5? I thought I had seen them on this thread but went back and couldn't find it.
I...
Has anyone graphed the kinematics of the supreme v5? I thought I had seen them on this thread but went back and couldn't find it.
I rode the last generation this weekend and was blown away. I just wanted to compare the two.
The V4 and V5 are completely different bikes. The V5 is very close to the 23 Trek session with axle path. Goes back 10mm then forward to 0. The V5 is 40-45% progressive, the V4 was only like 20-25%.
I can’t find all the files, I found the axle path. There’s a few mock ups on Linkage Design program.
The V4 and V5 are completely different bikes. The V5 is very close to the 23 Trek session with axle path. Goes back 10mm then forward...
The V4 and V5 are completely different bikes. The V5 is very close to the 23 Trek session with axle path. Goes back 10mm then forward to 0. The V5 is 40-45% progressive, the V4 was only like 20-25%.
I can’t find all the files, I found the axle path. There’s a few mock ups on Linkage Design program.
I was curious what the anti rise is, it seemed like the old design had quite a bit compared to the new design and that is what the main flaw was. I honestly didn't think it was all that bad under braking. That was the first bike I had ridden with anti squat number in the 150-170 range, I didn't know this at the time but when I would sprint or pedal I was surprised at how well it accelerated.
don't think anybody's pointed it out yet, but I just noticed these are using the same bleed screw as the DB8s, implying they're running mineral oil. incoming mineral oil Codes?
It's the lever for the new DH brake that we've seen some pit photos of. People have been saying their name is Maven.
Not so sure about the Magura brake hose though, unless that just happens to be a part swap.
there were already pictures posted of these upcoming brakes being bled which pretty much confirmed they‘re mineral oil.
or it might be a special sram dot 5.099 fluid which they made green in appreciation of the tech rumors thread
Same one that is BOD just with different bar and stem?
Does anyone know anything about an update for the altitude and instinct ? In France, they're 30% off at the moment
Tbf most bikes in Europe are 30% right now :o'
Honestly yeah looks a lot like the bike I saw…. That has a pile of FSA parts in front of the tent they had here….maybe they are testing some new stuff?
re: shifting speed between old axs and transmission, we highlighted this in our transmission video when it launched - cruise to 11:36 to see it. transmission is slow and steady vs old axs goes as fast as you click the shifter
FSA
Ah, good catch ! I did not take attention to the hose. Anyway, it seems to match with the GT from the BOD... I understand those are prototypes wheels from FSA (like the stem/bars from the other pic) then
Full Sheep Ahead?
Furious Sheep Ahead!
So transmission delays by a preset amount depending upon what gear it's in, and what gear it's going to. So delay is based on an average cadence, right? Or perhaps on the high end of the range for normal cadences as being slightly early to catch the shift ramp would probably be better than slightly late to catch it. And by all accounts works great. What I'm getting at is that theoretically a small speed sensor could be incorporated into a pulley on the derailleur and the delay could be further optimized for distance to shift gate and exact speed at which the chain is moving. I'm not sure it'd improve performance all that much, probably not enough to justify the added complexity, but still interesting. Also it could be implemented for "free" on ebikes with corded transmission.
You'd only need a magnet in the upper jockey and a hall sensor nearby and you're all set.
Just like I suggested above, difference is it can be achieved with existing hardware. Flight attendant cadence sensors are out there, and from what I can tell they are even compatible with non-sram cranks (there's an expanding plug version just looking at the diagrams). It would just require software at the moment to make it all work. If anything it would work even better than a pulley-sensor as they would be susceptible to any chain movement caused by the suspension. Hopefully SRAM listens....
Not sure if this has been posted before, but this is the GX transmission it seems.
https://www.specialized.com/us/en/stumpjumper-expert/p/200521?color=336…
It was released few weeks ago.
It's been out for a few weeks now, and that crank doesn't look any better than when I saw it at release.
😂😂🤘🏽
Going for the mid/late 90's LX vibe?
I really like the lunar grey current GX stuff, should have stuck with that.
Tairin Wheels is going to release a silent freehub upgrade for their Shogun hub. I find this noteworthy because Tairin could have just released a new hub with the silent tech [which they are doing] and left it at that. Instead, they took the time to port it to an older product. Off the top of my head, I can't think of many companies that would go to the trouble. It's kind of like a frame manufacturer offering a way to swap out a derailleur hanger for a direct mount without having to buy an entirely new rear end or frame. Anyway, I think it's neat, and Jose is a good dude, so I'm getting one.
Has anyone graphed the kinematics of the supreme v5? I thought I had seen them on this thread but went back and couldn't find it.
I rode the last generation this weekend and was blown away. I just wanted to compare the two.
Backwards compatibility. Current owners can upgrade their hubs if wanted and new customers can just buy it outright.
Wish more companies did this.
I just saw the new Altitude and I wish I could say more but I cant. All I will say is I was shock in the direction they have gone in a good way. It'll be a very interesting bike and I haven't seen a correct rumor about it yet.
Stay thirsty my friends.....
The V4 and V5 are completely different bikes. The V5 is very close to the 23 Trek session with axle path. Goes back 10mm then forward to 0. The V5 is 40-45% progressive, the V4 was only like 20-25%.
I can’t find all the files, I found the axle path. There’s a few mock ups on Linkage Design program.
I was curious what the anti rise is, it seemed like the old design had quite a bit compared to the new design and that is what the main flaw was. I honestly didn't think it was all that bad under braking. That was the first bike I had ridden with anti squat number in the 150-170 range, I didn't know this at the time but when I would sprint or pedal I was surprised at how well it accelerated.
New vivid air unveils in about 2 weeks, seen one in person
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