REVELOX innovative bicycle crankset, version RC1 2008

SteveintheUK in Crankset, Manufacturers, Products, REVELOX, Tech Info, Video

REVELOX has developed a new and very innovative bicycle crankset. Here is a first video, showing the V6 prototype in action.

Key benefits

Reduction of oxygen uptake (Vo2 -11%)
Easier dead spot passages
Reduction of lactate level under high power (-21%)
Maximum torque increase (+10%)
Circular pedaling pattern
Compatible with most bike frames type ISO/BSA
Concrete results in the first kilometer

A revolution in the world of performance components

The Revelox crankset version RC1 is planed for 2008. See page technical info for more details.

Revelox can help you to go further, faster

Technical info

The pedaling cycle

We divide the cycle in 4 phases with 2 power (push and pull) and 2 transitions (Upper and lower).
See the diagram below.
The pushing phase provide the most of the power generation (>80%) in reason of the intensity of the effective force (F), where the maximum value is obtained at near 90 deg.

The negative work over the positive work (W-/W+) varies as a function of the cyclist’s ability the to keep a continuous and efficient pattern, but mainly of the cadence(RPM), the load (Watts) and the physical intensity level (VO2). In some cases this ratio can reach up to 27% (130RPM, intensity 60% of MAP). See the following study.

The unique concept of Revelox crankset

It consist of modifying mechanically, the trajectory of the pedal path and the tangential speed of each pedal, in order to generate an increased mean torque to the rear wheel at each crank rotation and for the same amount of energy produced by the cyclist.

Each crank arm extends and retracts independently and are synchronized to improve the efficiency thus the power produced during the push phase in particular.

The proportions between the crank arms extensions and the oval shaped chainrings, gives a smooth, more efficient pedaling pattern, in the range of mean cadence and power. The figures below shows the crankset at 4 key positions, equipped with a combination of 40 and 52 teeth chainrings. As well as providing a better gross efficiency, the Revelox crankset procures a training tool helping to improve the quality and intensity of forces, applied during the transition phases.

Read more about this product at Revelox.com

Product caracteristics

Crank length increase to 185mm in the POWER stroke and decrease to 161mm in the RECOVERY stroke
Compatible with all ISO/BSA bottom bracket tube (68.0 mm)
Available with road double (40-52) or Compact (36-52) chainrings
High rigidity for maximum power transmission with oversized main axle bearings
Fully sealed mechanism with minimal friction
Chain line compatible with Shimano standard
Weight of crankset assembly: equivalent to a Shimano DURA-ACE crankset plus 0.5% of bike & rider weight
Aluminum CNC machined oval chainrings with hard surface treatment
Color: gray and black
Initial concept already patented ( USA & Canada) and now patent pending (US29/289,835) for actual commercial version
Design patent in process
Meets the UCI Equipment rule and ITU Competition rules
Installation: require 2 specific tools, supplied with the crankset