ghisallo2003 wrote:No this is not the end of the front derailleur?
Or, no we do not change gear to allow a change in cadence?
I was responding in as few words as possible directly to the subject of the post.
I think one of the glyphs from the Mayan calendar was misinterpreted, and it was meant to show a single chainring. Instead, the Edumacated ones translated it to mean the earth's magnetic field.
mjduct wrote:I think 90% of people could do without a front derailleur right now.
Agree 100%. I happily ride with my 42 inner chainring and 12-23 or 13-23 cassette. 30 mph is easy with the high gear and I haven't met any hills I coud not climb with the low gears. I also have a couple single speeds that get me up the hills and into the headwinds just fine. Rode the single speed 140 miles in a day out to the start of RAGBRAI. Then the next seven days across Iowa. Few hills on that route. One gear worked fine.
ProudDaddy wrote:mjduct wrote:I think 90% of people could do without a front derailleur right now.
Really? Even with my 53/39 front and 26/11 cassette I frequently do not have enough range on either end during the same ride. Especially this time of year, doing base and trying to stay in a steady zone 2 my cadence will drop to the 50s in my 39/26 while climbing a big hill when I'd prefer it near 80. Then bombing down in my 53/11 I'm spinning over 110. I know not everyone lives in hilly terrain but lots of people go out of their way to ride hills. Even riding in Florida where it was dead flat I had the pleasure of riding 30+ miles into a 30 mph head wind and then made the return with the tail wind. So even used the extreme ends of my 20 speed gearing there. Related to Ghisallo's post, I find my heart rate to have some correlation with cadence even while maintaining a steady power, so I watch my cadence during base.
On the road I guess I'm in the 10%............and my guess so will be about 3/4 of serious roadies such as ProudDaddy (most of whom appreciate a closely spaced rear cassette / who challenge themselves via varieties of terrain and distance) will also be in that 10%
Yes it could make sense for cross which has a limited speed profile.....but gosh don't suggest on the road unless you commute / tool around on only on flatish roads.
X-horizon RD: 220 grams
10-42 cassette: 260 grams
Single crank: 650grams (BB30)
Total 1130 grams
Compare them to these:
Red RD: 145 grams
Red FD: 70 grams
11-26 Red cassette: 147g
XX Double crank: 694 grams (BB30)
Front shifter, wires: ~100grams
Total 1156 grams
So XX1 saves only 26 grams over XX-red hybrid drivetrain, and I don't think it's worth anything.
SWijland wrote:Check this out:http://velonews.competitor.com/2012/12/bikes-and-tech/spotted-prototype-sram-cyclocross-single-chainring_269580.
Single chainring up front on a CX bike, without anything to keep the chain in place. Is this a sign of things to come and will we be seeing the SRAM 1x11 setup on a road bike soon?
AFAIK this is old hat. Single chainring up front has been here for years. So no, I doubt this will change a thing.
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