Just to clarify,
The way I read the article I it was aimed at touring bikes (example shows a
Hunq) and their appropriate gearing. My response too was aimed at touring
bikes not modern carbon race bikes. Plenty of triple options for Rivbikes.
On Friday, September 16, 2016 at 5:37:24 AM UTC-7, Steve Palincsar wrote:
> On 09/15/2016 11:45 PM, Clayton.sf wrote:
> > 40t cogs are the domain of 1x gearing IMO, unless it is an academic
> exercise or you are schlepping too much much gear. 22x40 - you would likely
> be able to walk as fast. And... why not use at triple at that point.
> Personally I like short cage derailers for dirt or none at all and don't go
> beyond 36 in a cassette.
> In the carbon frame 11 speed era, increasingly 40T sprockets are the
> only way to get gears in the low 20s. Triples aren't an option because
> 1) there aren't many, if any, made for the type of bottom brackets used
> on carbon road bikes; 2) integrated brake/shift levers don't do triples
> (either at all, in the case of the higher group levels, or very
> successfully); 3) even if you could change crank sets you are still
> stuck with a 50T large chain ring on most of these bikes because the
> front derailleur is mounted on a "braze-on" bracket whose adjustment
> slot is made such that you can't lower the front derailleur at all.
> Along with that 50T big ring comes a 34T small ring.
> So where does this leave you? 34 x 32 is now the "standard" low gear,
> and the lowest "road" groups offer. With the 23mm tires these bikes
> have, that's a 28" gear. If you need lower than that, you've got to go
> to larger sprockets, and the next larger sizes are 36 and 40 which give
> you 25" and 22", respectively, and you've got to use one of the two
> Wolftooth devices: Roadlink (which will let that 32T capable road rear
> derailleur accommodate a 36T sprocket) or Tanpan, which will let you use
> a Dynasys rear derailleur, which can handle 40T.
> None of this is ideal, in that along with those 36 or 40T large
> sprockets you get an 11T 1st position, and 50x11 gives you a 120" top
> gear - and what anybody who needs a 25 or 22 inch low is going to do
> with a 120" big gear I cannot imagine. The next gear down with these
> cassettes is a 50x13 which isn't so bad - 101" - so I imagine basically
> you treat the 1st position sprocket as a spacer and forget you have 11
> back there.
> But basically, with those bikes that is all you can do.
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