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Liked a bike check scott gambler freeride/"trail" machine 11/14/2020 2:26 PM
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Liked a bike check WHY Cycles T.F. 27.5 Dirt Jumper 11/12/2020 2:45 PM
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Liked a bike check ICE FAST PUMPTRACK BLACK PEARL 11/4/2020 11:54 AM
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Liked a bike check Rocky Mountain Altitude Carbon 2018 11/4/2020 11:52 AM
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Liked a bike check Chromag Stylus + MRP Ribbon Air custom hardtail 10/9/2020 1:32 PM
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Liked a bike check Chromag Stylus + MRP Ribbon Air custom hardtail 10/9/2020 1:32 PM
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Liked a bike check Specialized Sx Trail Rebuild 9/6/2020 1:46 PM
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Liked a bike check Specialized Status "Jibbduro" 9/1/2020 10:38 AM
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Liked a bike check 2012 Transition Stank Bank 8/15/2020 4:23 AM
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Liked a bike check Pump1_rev1c Custom 26" Pump bike 8/15/2020 4:18 AM
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Liked a comment about product review Ochain's Active Spider Eliminates Pedal Kickback - REVIEW 8/15/2020 4:04 AM
grizzatom

There is absolutely no pedal kickback unless the hub is engage. Dan Roberts, Steve at Vorsprung, DT and many others have tried to pound this into peoples' heads. There are multiple things happening whether we are pedaling or freewheeling, but the definition of pedal kickback requires that the chain be mechanically locked front and rear and the chain be under tension. This is why we are able to plot graphs and derive a pedal kickback angle based on the geometric constraints of the linkage system (aka chain growth). This is useful when assessing how a bike will feel while climbing over obstacles or pedaling through rough sections of trail. As Dan Roberts shows in his analyses, pedal kickback also CANNOT physically occur above a certain wheel speed, which is generally 10-15mph, depending on the linkage.

Chain momentum (chain slap) is a different phenomenon. It is basically constrained mass transfer along the chain caused by abrupt change in direction while the suspension articulates over obstacles. This is what causes the lion's share of the jarring sensation through your feet while descending. It causes feedback through the chainring/crank/pedals and does not require the freehub to be engaged. O-chain may help reduce that sensation.

Point is there are many things going on, but pedal kickback (as it is defined) is not relevant to descending unless you are pedaling at very slow DH speeds, doing very low-speed drops to flat, or locking your rear brake through big compressions.

This product_review has 19 comments.

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