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ATLien wrote: 2x for me. Attached doc makes sense to me, nerd out on it. I did nerd out on this and graphed a comparison. Green lines are 47/32 x 11-32. Purple line is 42 x 11-40, both using Shimano 11-spd progressions.…
bobknh wrote: Interesting. I use round rings and wasn't aware that crank arm meters are thrown off by oval rings. Power is torque times angular velocity. Power meters measure torque many times per revolution via the…
I hear you. I’ve been using power meters for years but also elliptical chainrings, which throw off crank-based power meter readings. My solution has been to use PowerTap hubs, which I love and work great, but not…
@vinuneuro Sounds like a good plan. Hope you get a chance to try Waterfall Glen sometime. I think you'll like it. -Tim
The longer this topic gets, the more it's seems like a lot of angst over what boils down to just chain slap. You may have noticed in the pic of my gravel drivetrain, I'm using a Lizard Skins neoprene-&-velcro chainstay…
@vinuneuro You probably know this but the Force 1 RD is X-Horizon and 1x specific. It's not able to take up excess chain from front shifts. -Tim
drwelby wrote: Almost all of my riding is on a 44 x 17/19/21. That's about a 12% jump and it feels about right on the rollers. When I was riding a road cassette with 1 tooth jumps it felt like I was shifting more than I…
13-14-15-17... would be interesting, but in my case I think I'd need to go from a 42 in front all the way to a 50 to replace the 42-11 I use regularly in tailwinds situations. (I'm 64yo BTW, with an FTP around 200, if…
Didn't mean to start advocating 1x here. My point, re the OP's conundrum, is that if he wants a gravel bike with Di2 (and I'm with him there—I love Di2) and a clutch (also valid), then he may want to reconsider…
I'm a big fan of 1x, ever since I started experimenting with it on my XC mountain bike back in the pre XX-1 days. I have it on 3 of my 4 active bikes. From where I sit, it's 2x that introduces unnecessary complications.…
I would add a couple notes here. When I first considered 1x gearing, I spent some time figuring out what gears I actually use in what situations, and did some graphing and analyzing. For my gravel bike I ended up with…
Seems to me you have 3 options. 1. Pad your chainstay (easy and effective). 2. Accept 11-40 1x gearing (which works for me everywhere in the Chicago area). 3. Give up on Di2 (which would be a shame). -Tim
heybrady wrote: Is the left lever 'floppy' or does it stay in place for the most part? If the outer lever didn't also work the brake, you could probably ignore it, but with the STI design, I'd be annoyed by it and…
And I'll add that while Shimano was being blind-sided by 1x and SRAM was being blind-sided by electronic shifting, Campagnolo was being blind-sided by disk brakes, another area where Shimano has excelled.
In response to the original poster, I think Shimano got blind-sided by the whole 1x movement, mountain and road. It went against their product roadmap everywhere, and now they're playing catch-up. Kudos to SRAM for…
Di2 solves the dead-shifter problem too. Program the left side shifter to mirror the right. Amaze your friends shifting while you eat (right-handed) your energy bar. Or, you can do what I do: set it up with the…
I'm running 11-40 with XTR Di2 in back, 42t SRAM Force 1 in front, with disk road Di2 levers. It's an absolutely fabulous 1x gravel setup.
bnystrom, What crank are you planning to use for 44x30? This might be of interest: I recomputed the graph for 44/30/12-28 (green) v 42/11-40 (purple). Definitely tighter jumps through the cruising range with that…
A correction to my previous post: The graph shown was computed at 95rpm, not 90. My apologies. bnystrom, I'm generally in agreement with you that there are reasons to sometimes prefer 2x. However, my experience suggests…
I ride 1x (in the midwest) and this graph helped me make that decision. The green lines are 34/50 x 11-28. The purple is 42 x 11-40 (Shimano XTR). The Y axis is mph @90rpm. Assumes 700x40c tires. The dark pink zones are…