RX 600 and 800 are prorpietary bolt pattern and relatively small max chainring size, right? but are Hollowtech II! That’s the bad thing! that I want to not use! I’d been hoping that GRX800 would replace Ultegra, but now, not so sure about that.
I’ve never heard anything about Praxis besides that it’s ok. Seems like there’s not a lot of reason for it to exist? They sorta backed into making cranksets after putting together some nice rings back in the 2000’s, right?
I’m thinking that if I don’t go full Campagnolo on future builds, I might get EC90, and will probably snag some used EA90 off the bay to see if I like the general concept.
Yep… as I understand it Praxis did a whole bunch of OEM stuff for Specialized and Fuji early on then pivoted to after-market. Their cranks use what is essentially an oversized spindle GXP. 30/28mm spindle diameter. They have bottom brackets for pretty much every frame standard out there now (including both variants of T47). Definitely relies on a properly faced shell but the bearing life on all the BSA units we have installed has been really decent.
For compact the EA/EC90 spider has individually replaceable rings which is nice (the sub compact is one-piece).
oh man T47- along with wishbone seatstays, that’s one of the main things custom framebuilders don’t want to work with.
Easton seems like a solid bet, though Rotor are a close second. I guess if shimano comes out with a big redesign i’d be interested, but that’s at least a couple years out.
I’m going back to Campagnolo when my Red 11-speed breaks. I feel like they are the only ones who make quality products these days and support them long-term. The only reason I switched in the first place was because C had stupid gear ratios but they are coming to their senses
If I was not using a power-meter I would be all over the new Campy cranks TBH. Ultra-torque has always been really good and the improved seals on the bottom bracket cups are a big improvement.
I think you have to assume the system you’re buying today will have consumable support for a while but that’s it. I’m wondering if Campy gets a pass mentally because they just don’t have as much market share and everyone recalls 2000s-era stuff fondly.
Shimano - 11s/12s firmware incompatibility on di2
SRAM - release eTap, then release AXS not far behind (although they did push a firmware update for 11s shifters so points there)
Campy - (not sure, but think EPS v1 and v2 were different), multiple crank standards
I guess you need vendor-specific tools for everything now so tool commonality is less of a thing too
That Alpinestars uses a 1-1/4" diameter steerer. The steel frames (Cro-Mega) seem to hold up much better than the aluminum. That said, anecdotally the AL-Megas generally hold up better than aluminum e-stay frames from other manufacturers. Stem, front derailleur, fender mounting can be challenges. Taking this chance to post my old Cro-Mega to inspire myself to pull the frame out of storage and get it built back up.
I was talking specifically about the praxis one. It’s very convoluted to install and remove. Otherwise I don’t have much hate for pressfit, unless it’s on a metal frame which is dumb.
Not hard to get a t47 shell in steel, paragon makes them. Maybe a resistance to buying tooling?
I’ll be doing them on lumnum frames going forward. The added weld area is a big plus. On steel I don’t see any advantage to it except the one type of mostly extinct crank it allows you to run that a regular English thread won’t.
Nobody seems to make the shells premade in aluminum but you can just buy PF shells and cut the threads yourself, which will be my approach.
Still the same. In spite of the crank failures. I’d much rather have a flawed design with a 24mm axle than anything with a 30mm axle which is a flawed design in a different way. Every few generations folks get up in arms because of Shimano’s missteps and there’s a surge towards other things, but, in my experience things tend to settle back out in their favor.
I realize not everyone has sufficient means to do so, but I personally wouldn’t sweat a crank failure. I’d just grab another off ebay and be on my way.
which one of y’all had that bike with weirdly v-brake-ish set up cantilever brakes? with a pulley and cable hanger? I absolutely cannot find this thing. @drwelby perhaps?
