PoorCyclist wrote: ↑
Fri Oct 29, 2021 2:32 am
tanhalt wrote: ↑
Thu Oct 28, 2021 5:21 pm
Here's a close-up after >5k miles of pavement riding (including many large climbs and descents) and ~2300 miles of mixed pavement/dirt use (heavy on the dirt).
Any chance these calipers would work with a SRAM force 1x hydro lever?
I don't understand, how do you use your brake in the drops?
It might work, but not recommended...the difficulty is that SRAM stuff runs DOT 4 or 5.1 fluid (glycol based) while those Magura calipers run their mineral oil. Now then, the seals in the SRAM stuff would be OK with mineral oil (you'd need to flush with alcohol a few times before putting mineral oil in), but not vice versa. The seals in the calipers can't handle the glycol stuff.
Aside from the fluid issues, and possible differences in master piston diameters changing leverage...IMO, the main reason you don't want to use a lever used for disc brakes on these calipers is that you'll lose the pad clearance adjustment. The Magura levers have a small wheel under them that allows you to adjust the pad spacing to compensate for pad wear. This works because it's a closed system (i.e. no reservoir, unlike a disc system) and that adjuster wheel just takes up space in the master cylinder and thus makes the system volume smaller, thereby pushing the pads out further for a given fluid volume.
Here's what I did...when I ordered the Magura brakes, I selected the 4 finger lever option (to get a longer lever). I then ordered a pair of these 3D printed adapter blocks from Shapeways (turns out the design is by another WW member
https://www.shapeways.com/product/WHZMF ... e-drop-bar
This is how it ended up on the Cannondale:
As you can see, the adapter not only adapts the smaller diameter MTB clamp area to the slightly larger diameter road bar size, but also changes the angle of the lever body relative to the bar, thus putting the lever in just the right spot for use in the drops. Feels exactly like a road lever when braking from the drops.
Now...if you notice, in the picture of the full bike shown earlier in this thread, I originally set up the shifting to use a bar end. I wasn't completely satisfied with that...and even tried an old SunTour "batwing" style shifter (with a custom detent plate for 10sp) mounted next to the lever for a bit...but, eventually settled on a what you see here, a wireless electronic X-shifter from Cell Cycling. That little rubber module you see next to the lever is a wireless shift button. The actuator is mounted on the driveside chainstay: