SRAM Launches new HS2 Rotor

62 quid for a 220mm rotor? Are they on crack?

Maybe the price is a tribute to the other HS2…?

The heat management claims are pretty impressive to be fair… Steel is just the right way to make a bike rotor but getting a lot more heat out of it is a good trick. Though I suppose it depends what you mean by “heat management”, just adding more metal means it takes more energy to create the same amount of heat so that alone could give a big improvement in testing.

The “standardness” of the rotor pattern does make me smile a bit, they went to town on the centreline rotors and made a funky pattern and said that was all great, and now they’ve just gone “yeah, slots are good, boring slots just like we used to and everyone else does”

Wonder what it means by “recessed spokes”? I thought it’d mean that they were thinner than the friction surface but it doesn’t really look that way

Just seen supposedly genuine Sram rotors on Ali Express for £6 whats the catch?

give it 12 months and they will be selling 1.5mm thick rotors claiming they are x% lighter.some things are genuine innovation and some things are just marketing to try and sell us what we already have. Are people really struggling with heat management of their brake rotors?
its a pity they didnt come with a new mount standard then we could have bought new hubs too

https://singletrackworld.com/user/oldfart/ Banana boat? What era are you living in?

From £42 do they think weve just come up on the banana boat!

Indeed. How can it be quality when it’s so cheap?

https://www.intend-bc.com/products/aero/

https://winstanleysbikes.co.uk/hope-v4-vented-disc-brake-rotor

Indeed. How can it be quality when it’s so cheap?

https://www.intend-bc.com/products/aero/

The mathematical reason behind that is the exponentially growing surface area by using holes with a smaller diameter than rotor thickness. To be precise: 672 holes on 203mm & 528 holes on 180mm rotors equals around 30% greater surface area and similar improvement in heat dissipation.

That sounds a lot more believable than a bit of black paint on the rotor arms – they’ve in theory created a better heat sink with the same amount of material. Though it also has a ‘larger friction surface’.

Given lots of other drilling patterns are meant to create better braking/shit clearance there might be disadvantages of lots of small holes but it is something different

There’s nothing exponential about it for a start.

indeed. I missed the misuse of that term…..but I’m happy to accept that lots of small holes will have increased the surface area over a smaller number of larger holes