Pow­erCranks

New Im­proved Model More Re­li­able

Pedal Magazine - - Out In Front -

Pow­erCranks are an in­no­va­tive de­vice used suc­cess­fully by a wide range of ath­letes, from recre­ational to pro­fes­sional, in re­ha­bil­i­ta­tion, pre­hab, train­ing and rac­ing in many sports and dis­ci­plines in which co-or­di­na­tion and strength are a must.

Pow­erCranks are in­de­pen­dent bi­cy­cle cranks that re­place the reg­u­lar cranks found on a typ­i­cal bi­cy­cle or ex­er­cise ma­chine. A patented train­ing tool, Pow­erCranks in­te­grate a one-way clutch in each crank arm so each drives the chain but not each other.

The idea is sim­i­lar to com­plet­ing one-legged drills, with each leg work­ing in­de­pen­dently.

As such, one leg can­not help the other to make the ped­als go around, so in or­der to pedal the bike one must ac­tively raise each pedal us­ing the hip flexor and ham­string mus­cles, which are gen­er­ally un­der­trained mus­cles in most ath­letes. Whether done cor­rectly or in­cor­rectly, this pro­vides the rider with feed­back.

Many of the world’s best cy­clists have trained with Pow­erCranks in­clud­ing Cadel Evans, Neils Al­bert, Paolo Bet­tini, Jo­han

Museeuw, Stefano Garzelli and Vin­cenzo Nibali.

The lock­ing mech­a­nism found in the orig­i­nal Pow­erCranks is a col­lar that slides in and out of two po­si­tions: locked and un­locked. In the locked po­si­tion, the Pow­erCranks act like a reg­u­lar set of crank arms work­ing to­gether to pro­pel you for­ward. In the un­locked po­si­tion, the crank arms move in­de­pen­dently.

The new model of­fers two po­si­tions with the first re­plac­ing the orig­i­nal locked mode but now fea­tur­ing 2-3º of move­ment while the sec­ond po­si­tion, or un­locked mode, has 10º of move­ment.

The 2-3º move­ment in the first po­si­tion is very slight so the Pow­erCranks feel like reg­u­lar cranks and it’s also very dif­fi­cult to de­ter­mine any ped­al­ing tech­nique flaws. In the 10º po­si­tion, it be­comes quite ob­vi­ous when there is a tech­ni­cal flaw by both how it feels and the sound it makes.

Along with this im­prove­ment, Pow­erCranks have be­come more re­li­able, qui­eter and lighter. Less steel is used in the de­sign, and the cranks can be taken out on a long ride or used dur­ing a train­ing race.

Crank arm length, as in pre­vi­ous mod­els, re­mains ad­justable, so one can re­ally feel how crank length im­pacts ped­al­ing tech­nique and power. Ac­cord­ing to Pow­erCranks, most power is lost be­cause cranks are too long and rid­ers do not pedal over the top ef­fi­ciently. The new cranks make it easy to feel any in­ef­fi­cien­cies and are an ideal crank-length fit­ting tool as well. Avail­able late sum­mer 2017. - MS

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