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rifu RichardCunningham's article
Jun 23, 2017 at 19:18
3 days
BMC Speedfox 01 - First Ride
@gnralized: ah I see, my opinion about AS and PKB might be skewed because I just rode the new Polygon. It really has high AS (to the point of making the bike ride higher in its travel) with no noticeable PKB. I don't know what the marketing people of Polygon thinks, introducing it as Variable Suspension Kinematics will make people understand it better than some leet names like R3act-2play. Reading about compromises, Gwin's chainless run and Canyon's custom freecoaster mechanism also came to mind. For frames with good AS but with potentials for its PKB to hinder suspension movement, a freecoaster mechanism on the freehub to make the bike feels like it is chainless is like the opposite approach of a climb switch. A climb switch is arguably more intuitive to use though. Or.. we can couple the freecoaster mechanism with seatpost height adjustment. Slamming the seat down will open up the suspension, freeing it from PKB. You can't add speed just before a jump though. Back to that VSK (has anybody patented it yet?), what about Kona's Magic Link?
rifu RichardCunningham's article
Jun 22, 2017 at 15:19
Jun 22, 2017
BMC Speedfox 01 - First Ride
@gnralized: the way I see it, we can "switch off" the anti-squat simply by not pedalling. Coasting on the downhill will free the suspension movement, pedalling on the uphill will firm it up. Anyway, frame designers can adjust the amount of AS accordingly, just as much as what is needed. At some point, a small enough AS will not induce a noticeable PKB.
rifu davetrumpore's article
Jun 12, 2017 at 1:09
Jun 12, 2017
rifu EnduroWorldSeries's article
May 16, 2017 at 1:08
May 16, 2017
How it Was Won in Madeira - Quarq Analysis
@VTwintips: nice argument on efficiency and power vs flow!
rifu EnduroWorldSeries's article
May 15, 2017 at 21:51
May 15, 2017
How it Was Won in Madeira - Quarq Analysis
@triptex: yes, without some kind of empirical data from powermeters we can never be sure. That is why I use the word "assume". Educated guess from available data. ;)
rifu EnduroWorldSeries's article
May 15, 2017 at 18:45
May 15, 2017
How it Was Won in Madeira - Quarq Analysis
But how fast can you go before you got a flat or a crash? If you go really fast and got a crash, is the time gain still enough to be in the lead? Is going really fast worth the risk? You can see in stage 3, Sam Hill was gaining time (going really fast) before maybe he got a crash, and then going really fast again before maybe got a crash again. Data like these shows which part of the stages where you should back it off a little or you played it too safe.
rifu EnduroWorldSeries's article
May 15, 2017 at 18:34
May 15, 2017
How it Was Won in Madeira - Quarq Analysis
@triptex: we can assume relative power output using time gap and elevation. Oton (and Maes) got a big gain on Callaghan at stage 5 which is flatter than other stages.
rifu COMMENCALbicycles's video
May 8, 2017 at 18:34
May 8, 2017
video
Whoops, sorry for misreading it. Yes, as far as I know Suntour doesn't have any serious product yet for gravity use. Their sponsored athletes has been using other suspension maker rear shocks over the year. The latest example is Alex Fayolle's World Cup winning bike with a StemTee rear shock.

rifu COMMENCALbicycles's video
May 3, 2017 at 19:58
May 3, 2017
video
some of their riders do use SR Suntour forks. https://www.pinkbike.com/photo/14682973/

rifu rupertwalker's article
Apr 24, 2017 at 17:49
Apr 24, 2017
Matt Miles - Raw 100 - Video
Was about to ask the same question.
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