Home ENGINEERING Continuously Variable Transmission Technology For Bicycles

Continuously Variable Transmission Technology For Bicycles


Emerging Innovation Category Finalist, WA Innovator of The Year 2018- Advanced Transmission Systems Holdings – Universal Continuously Variable Transmission (CVT).

source/image(PrtSc): In Shot Productions

An ultra-narrow stepless transmission featuring very high gear ratios and ranges, offers the opportunity to drastically improve the performance of many vehicle and industry equipmnet technologies.CVT was the winner of the 2018 Business News ‘Great for the State’ Encouragement Award.

Treadlie Engineering has developed a unique and patent pending Continuously Variable Transmission (CVT) technology for bicycles. Our company’s drive train differs from all other approaches by utilising a friction based V-belt driven Variable Diameter Pulley (VDP) system at the bicycle crank set and rear wheel.


V-belt pulley drivetrains are well established and have a long standing track record in many industrial and mobile equipment applications, yet have to date not been used on bicycles because of the prohibitive width of traditional conical pulley assemblies to achieve useful gear ratios needed for cycling.