CYFLY - INNOVATION FOR MORE EFFICIENCY AND NEW DRIVING PLEASURE

CYFLY – HIGH-TECH MADE IN GERMANY: EFFECT & FUNCTION

The crank drive on bicycles have remained largely unchanged for around 150 years. With cyfly we have now opened a new chapter. The cyfly drive is a patented multiple-joint crank that develops up to 30% more leverage (torque) than the conventional bicycle crank. Combined with an elliptical pedal path, the higher torque enables better use of the force exerted by the rider. 

Effect:
The effect, in comparison to conventional cranks, is more dynamic acceleration and more effortless maintenance of speed, which is particularly noticeable for the rider at medium speeds and in high gears. We demonstrate this in the video on the functioning of cyfly. In addition, with a high oval pedal movement, the cyfly drive ensures ergonomic advantages and a new riding feel.

CYFLY FUNCTIONING


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CYFLY – HIGH-TECH MADE IN GERMANY: EFFECT & FUNCTION

Function:
The cyfly function is basically simple and has two elements:

The first and central element is the torque, which is also known as leverage. Everyone knows the effect of leverage – whether it be in loosening or tightening screws with a screwdriver or opening a jar with a lid opener. The longer the lever the easier it is. And that is exactly where cyfly comes in. 
The cyfly drive has a 30% longer crank with correspondingly more torque – even before a gear change is used. Anyone trying to attach a crank more than 5 centimetres longer to their bicycle would soon encounter a problem. The enlarged pedalling radius would be almost impossible for the person to pedal – in addition, the pedals would come too close to the ground and would cause falls. cyfly solves the problem by not having the lengthened crank attached to the central axis, but instead offset. The leverage is redirected via a complex multi-joint mechanism and the increased torque can thus be used without an enlarged pedal radius. The video illustrates the effect.

The second element of the cyfly’s function is the no longer circular, but elliptical or “high-oval” pedalling movement. This oval pedalling path has two effects. Firstly, in comparison to the round pedalling path every cyclist is familiar with, the area in which the cyclist can exert force is enlarged (cf. graphic).

Secondly, the movement sequence of the oval pedalling path – as with a stepper in a fitness studio – is close to the natural human walking motion and thus more ergonomic than circular pedalling. To make it easier to become accustomed to, we have literally “rounded off” the cyfly drive with an oval chain plate – the oval chain plate is very striking, but only acts to harmonise the stepping movement.

Range of force transmission conventional
 
Enlarged range of force transmission with cyfly
 
 
 

HIGH-TECH MADE IN GERMANY

About 100 individual parts work together in cyfly. All components are precision-milled or forged and consist of high-performance steels and/or aircraft aluminium. The components are produced according to automobile standards by our partners in Germany. In addition, cyfly includes various innovations: a series of self-produced screws with high-quality hexalobular internal drives and low-friction radial shaft seals specially developed for cyfly.

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ROBUSTNESS & DURABILITY

During the four-year development period, we designed cyfly for efficiency and durability. We wanted to create a more durable system in comparison with the traditional crank.
The industrial bearings from market leader Schaeffler that are built into cyfly are double-sealed and lifetime-lubricated. Due to the cyfly crank’s double suspension, tilting moments, which can be caused e.g. by high loads during out-of-saddle pedalling, are better absorbed. This leads to enormous rigidity in the cyfly pedal crank. 

The cyfly chainwheel has a special tooth shape for better durability despite higher torque. This so-called narrow-wide technology leads to a tight fit with the chain and thus reduces wear. Despite the oval chainwheel, this also prevents the chain from jumping off.

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QUICK PIT STOP


For maintenance, the cyfly drive can be dismantled in less than five minutes. Screw locks ensure the necessary safety. 

 
 
 

FEEDBACK ON MÖVE BIKES WITH CYFLY

 
 
 

FEEDBACK ON MÖVE BIKES WITH CYFLY

 
 
 

FEEDBACK ON MÖVE BIKES WITH CYFLY

 
 
 

FEEDBACK ON MÖVE BIKES WITH CYFLY

 
 
 

FEEDBACK ON MÖVE BIKES WITH CYFLY

 
 
 

FAQ – QUESTIONS AND ANSWERS

Can cyfly be retrofitted

 
 
 

FAQ – QUESTIONS AND ANSWERS

How durable are cyfly drives

 
 
 

 


 

FAQ – QUESTIONS AND ANSWERS

What happens when cyfly is faulty?

 
 
 

FAQ – QUESTIONS AND ANSWERS

Is cyfly dirt- and water-resistant?

 
 
 

FAQ – QUESTIONS AND ANSWERS

Does a higher torque mean a higher wear?

 
 
 

FAQ – QUESTIONS AND ANSWERS

Is the positive cyfly effect “eaten up” by the additional friction and/or the additional weight?

 
 
 

FAQ – QUESTIONS AND ANSWERS

Isn’t cyfly the same as Shimano Biopace?