Consistency.tomtom wrote: ↑Wed Sep 21, 2022 11:14 amDA is lighter, the new 9270 has more clearance and braking is super (also according to numerous testers/reviews). Normally the critical point is tyre friction/roadcontact and/or rider skills and not so much the discbraking power itself. So I'm very curious which (real) advantages a switch to MT8 SL could/should bring.RDY wrote: ↑Wed Jun 02, 2021 1:07 pmHas anyone tried this lately? Saw someone comment about it on a CycleSpeed YT video.
Magura do their MT8 SL in FM (Flat Mount), and I think all their MT8s can accommodate between 140 and 200mm rotors.
AFAIK the amount of fluid they push is ballpark the same, for the 2 piston designs, and the fluid question could be solved with Bionol.
But how do you connect them? Aren't hoses different sizes?
The Maguras are a lot more powerful than DA / UT and have more clearance (if using thinner road rotors) and better piston retraction. Also I think they'll be lighter than DA.
I've also thought about trying Formula Curas (their QDC is a big advantage).
On road:
My 8170 (released together with 9270) piston roll back wasn't consistent on the first few rides. Like, I set up so the rotor to be centered in between the pads. Slow ride, it's fine.
Then on real ride after it gets a bit warm, one piston retract less than the another. So my disc rotor is no longer centered in between the gap.
I re center the caliper after the ride for like 5 rides. Then it settle down and become noise free eventually. I hope it's just settle in and stay that way and don't develop another common problem of fluid slowly weep through the piston and create ring of oil behind the brake pads which can contaminate the rotor. Finger cross.
On mtb, you can also search about "wandering bite point" which plague minority of Shimano brake users for years. It only happen to some, not all, in a rare moment (mostly fast down hill with repeatedly on and off braking) that is hard to replicate at a bike shop. That's why Shimano can get away not fixing its brake consistency.
All my other disc brake systems from other manufacturers (Magura, Sram, Hope, Hayes) have been more consistent so far.
I still keep my 8170 caliper on my road bike though. But if it act up again, I'll definitely switch the caliper away from Shimano.