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Not just downhillers, also enduro/all mountain/trail riding. I can see it being great to have tires drop to 12psi for a steep muddy section where you need the t

Not just downhillers, also enduro/all mountain/trail riding. I can see it being great to have tires drop to 12psi for a steep muddy section where you need the traction, come back to 30psi for stability in a hard corner, drop to 20ish to suck up some trail chatter at speed (assuming it's tubeless) then up to 50 for the ride home on tarmac. The thing that would mainly concern me is not weight but reliability. Everything on bikes breaks eventually and the % of rides that are ruined because the auto tire inflator failed and left me with a flat has to be very low indeed. And on the occasions it does then the % of weeks riding that are ruined because it's not quick and easy to fix back at home has to be low as well. Tech has to be very, very mature before I fit it to my bike.

JNRowe 6y ago
At last year's UCI worlds one of the riders(I forget who) had a dropper post failure, and it was depressing watching them slowly lose rank simply because of that. Part of me wants to see all the new advancements, but I also hate it when it ruins an otherwise good spectacle or personal ride. We also saw it with e-shifting in road, but that seems to have largely been solved. So, perhaps any problems that should arise with this could be shaken out in a couple of seasons too? </fence> Maybe there is a market for racing and events where you're only allowed steel-framed, canti brakes, SiS index shift monstrosities? Like one of those sub-$1k car rallies or something.
- sideshowb 6y ago
  >Maybe there is a market for racing and events where you're only allowed steel-framed, canti brakes, SiS index shift monstrosities? The closest fit to what you're looking for is the singlespeed category :)
  - JNRowe 6y ago
    Yeah. I was using a lot of hyperbole in an attempt to get my point across. However, in the time between writing my earlier comment and this I've actually been out for a lunchtime ride on my fixie. Just good fun for a Friday in February! The response here makes me think there are others who like the idea though, so I'll try to float it in the local CC forum.
- tweetle_beetle 6y ago
  I agree with you, but removing technology arms races from mainstream sport is a lost cause. The controversy around Nike's carbon plate in running shoes, and Speedo's polyurethane mix fabric suits show that not even the simplest sport are safe from it. However... there are still a few niches. > Maybe there is a market for racing and events where you're only allowed steel-framed, canti brakes, SiS index shift monstrosities? Like one of those sub-$1k car rallies or something. You've kind of just described Keirin [1], as a philosophy, if not the specifics. The Secret World of Japanese Keirin Racing is a good introduction if you're curious. [1] https://en.wikipedia.org/wiki/Keirin https://en.wikipedia.org/wiki/Keirin [2] https://www.youtube.com/watch?v=h_lJLI-O-M0 https://www.youtube.com/watch?v=h_lJLI-O-M0
  - veggieburglar 6y ago
    Mmm I miss scouring the internet for NJS parts. Wish my track bike hadn’t been stolen....
  - JNRowe 6y ago
    I wasn't suggesting removing all technology, as I agree that wouldn't work even if I wanted it. I just liked idea of a parallel low technology track fighting the good fight against pointy helmet disc-wheeled ten rider weeknight TT. Something odd just for fun, like the 24 Hours of LeMons¹ on beaters from the shed. I'm kind of aware of Keirin from watching track, but wasn't aware of the depth in the local market. That Chris Hoy video was great, thanks! ¹ https://en.m.wikipedia.org/wiki/24_Hours_of_LeMons https://en.m.wikipedia.org/wiki/24_Hours_of_LeMons
- mauvehaus 6y ago
  Cantilevers are a pain in the ass to adjust unless you're an octopus. All of the degrees of freedom come loose at the same time with the same bolt: all three rotational axes and the coarse distance to rim are secured by the same nut. They are unemployable to work on, to put it mildly. I could get on board with linear pull brakes though for the spirit of what you're proposing. Although maybe what you're looking for is a spec series with a really pedestrian (and affordable) component package.
- SyzygistSix 6y ago
  My bicycles are all at least 20 years old but cantilever brakes can die. The switch to v brakes made such a huge difference without adding complexity. In fact, they removed complexity, as they are so much easier to set up and maintain. But otherwise I'm with you. As someone who went mountain biking more days than not for more than a decade, simplicity never watered down my fun.
Arech 6y ago
I used to ride a lot in a rough woods quite far away (10+km of asphalt roads) from home, making on average about 70+km per riding episode. The most convenient generic setup was "inflate the wide and grippy tires up to the limit (4 to 5 bars depending on vendor)" and off you go. It's much easier to ride with overinflated tires over asphalt and their grippiness was mostly sufficient for the most conditions in a woods. Regarding the stiffness - anyway you never ride on rough terrain sitting in a saddle, you just have to stay on peddles to maintain stability. As an added but valuable bonus - overinflated tires are much stronger to withstand puncture attemps (in fact, I can't even remember I had one for a few years back then). So, I'm quite sceptical about that thing perspectives... I would prefer they invent more durable but cheap main components, btw, b/c that's just not right when a normal bike costs about as much as a car.
- sideshowb 6y ago
  By stability I mean the tyre not squirming off sideways under a high-g corner because the pressure is low. Nothing to do with being in or out of the saddle (though I'm assuming you'd be out at this point!) Agree the price of even mid range bikes is pretty insane though.
  - veggieburglar 6y ago
    Tire inserts like cushcore let you run really low pressures without worrying about squirming the bead off your tire, even on hard corners. They’re really a game changer- I still run decent PSI on the daily as I do a lot of climbing, but you can lower it down like crazy if you go to the bike park or if you’re ending a ride with all downhill. They supposedly decrease rolling resistance too; not sure about that but the increased sidewall stiffness is definitely noticeable.

JNRowe 6y ago

At last year's UCI worlds one of the riders(I forget who) had a dropper post failure, and it was depressing watching them slowly lose rank simply because of that. Part of me wants to see all the new advancements, but I also hate it when it ruins an otherwise good spectacle or personal ride. We also saw it with e-shifting in road, but that seems to have largely been solved. So, perhaps any problems that should arise with this could be shaken out in a couple of seasons too? </fence> Maybe there is a market for racing and events where you're only allowed steel-framed, canti brakes, SiS index shift monstrosities? Like one of those sub-$1k car rallies or something.

sideshowb 6y ago
>Maybe there is a market for racing and events where you're only allowed steel-framed, canti brakes, SiS index shift monstrosities? The closest fit to what you're looking for is the singlespeed category :)
- JNRowe 6y ago
  Yeah. I was using a lot of hyperbole in an attempt to get my point across. However, in the time between writing my earlier comment and this I've actually been out for a lunchtime ride on my fixie. Just good fun for a Friday in February! The response here makes me think there are others who like the idea though, so I'll try to float it in the local CC forum.
tweetle_beetle 6y ago
I agree with you, but removing technology arms races from mainstream sport is a lost cause. The controversy around Nike's carbon plate in running shoes, and Speedo's polyurethane mix fabric suits show that not even the simplest sport are safe from it. However... there are still a few niches. > Maybe there is a market for racing and events where you're only allowed steel-framed, canti brakes, SiS index shift monstrosities? Like one of those sub-$1k car rallies or something. You've kind of just described Keirin [1], as a philosophy, if not the specifics. The Secret World of Japanese Keirin Racing is a good introduction if you're curious. [1] https://en.wikipedia.org/wiki/Keirin https://en.wikipedia.org/wiki/Keirin [2] https://www.youtube.com/watch?v=h_lJLI-O-M0 https://www.youtube.com/watch?v=h_lJLI-O-M0
- veggieburglar 6y ago
  Mmm I miss scouring the internet for NJS parts. Wish my track bike hadn’t been stolen....
- JNRowe 6y ago
  I wasn't suggesting removing all technology, as I agree that wouldn't work even if I wanted it. I just liked idea of a parallel low technology track fighting the good fight against pointy helmet disc-wheeled ten rider weeknight TT. Something odd just for fun, like the 24 Hours of LeMons¹ on beaters from the shed. I'm kind of aware of Keirin from watching track, but wasn't aware of the depth in the local market. That Chris Hoy video was great, thanks! ¹ https://en.m.wikipedia.org/wiki/24_Hours_of_LeMons https://en.m.wikipedia.org/wiki/24_Hours_of_LeMons
mauvehaus 6y ago
Cantilevers are a pain in the ass to adjust unless you're an octopus. All of the degrees of freedom come loose at the same time with the same bolt: all three rotational axes and the coarse distance to rim are secured by the same nut. They are unemployable to work on, to put it mildly. I could get on board with linear pull brakes though for the spirit of what you're proposing. Although maybe what you're looking for is a spec series with a really pedestrian (and affordable) component package.
SyzygistSix 6y ago
My bicycles are all at least 20 years old but cantilever brakes can die. The switch to v brakes made such a huge difference without adding complexity. In fact, they removed complexity, as they are so much easier to set up and maintain. But otherwise I'm with you. As someone who went mountain biking more days than not for more than a decade, simplicity never watered down my fun.

Arech 6y ago

I used to ride a lot in a rough woods quite far away (10+km of asphalt roads) from home, making on average about 70+km per riding episode. The most convenient generic setup was "inflate the wide and grippy tires up to the limit (4 to 5 bars depending on vendor)" and off you go. It's much easier to ride with overinflated tires over asphalt and their grippiness was mostly sufficient for the most conditions in a woods. Regarding the stiffness - anyway you never ride on rough terrain sitting in a saddle, you just have to stay on peddles to maintain stability. As an added but valuable bonus - overinflated tires are much stronger to withstand puncture attemps (in fact, I can't even remember I had one for a few years back then). So, I'm quite sceptical about that thing perspectives... I would prefer they invent more durable but cheap main components, btw, b/c that's just not right when a normal bike costs about as much as a car.

sideshowb 6y ago
By stability I mean the tyre not squirming off sideways under a high-g corner because the pressure is low. Nothing to do with being in or out of the saddle (though I'm assuming you'd be out at this point!) Agree the price of even mid range bikes is pretty insane though.
- veggieburglar 6y ago
  Tire inserts like cushcore let you run really low pressures without worrying about squirming the bead off your tire, even on hard corners. They’re really a game changer- I still run decent PSI on the daily as I do a lot of climbing, but you can lower it down like crazy if you go to the bike park or if you’re ending a ride with all downhill. They supposedly decrease rolling resistance too; not sure about that but the increased sidewall stiffness is definitely noticeable.