CVT AUTOMATIC VARIATOR TRANSMISSION
We developed a CVT automatic variator transmission that can be used for any bicycle.
The Peyman transmission is a solution to the existing transmission systems on the bicycles with a cassette of sprockets, that cause a range of issues for cyclists as difficulties in shifting gears or choosing the right gear at the right time, having limited gears, chain falling off the sprocket if the derailleur is not aligned on the bicycle.
HOW IT WORKS
Based on the pedal rotation and the power that enters the system from the pedals, as well as the weight and speed of the cyclist, all of these being proportional to the route slope, the Peyman transmission provides the required gear ratio to the cyclist.
AN ADAPTIVE TRANSMISSION TO THE ROAD
The Peyman transmission will adapt the transmission ratio to the resistant torque. The transmission system will change the gear to optimise the effort from the bicycle rider.
Peyman transmission provides a high range of gear ratios with an incredibly smooth-shifting process.
RANGE OF GEARS
The Peyman CVT system uses varying speeds than other transmissions that provide a limited number of gear ratios in fixed steps.
The actual transmission system has a range of gear ratios between 0.5 underdrive to 6.0 overdrive.
There is the possibility of designing the system with a different range of gear ratios, such as 0.5 underdrive to 5 overdrive or 1 underdrive to 7 overdrive
FULLY MECHANICAL AUTOMATIC TRANSMISSION
In this CVT system, the gear shifting is a mechanical automatic and incredibly smooth uninterrupted process, without shocks or jerks.
Peyman transmission provides incredible gear ratios that automatically change within the limits of the system, without requiring manual shifters or any electronic device.
EASY TO INSTALL ON A BICYCLE
The current Peyman transmission has been installed on the hub of the rear wheel without making any modifications to the bicycle frame.
This transmission can be installed on the frame of almost all types of existing bicycles, as well as fixed-gears, without making modifications to the bicycle frame. It can be installed on or also incorporated into the bicycle's frame.
SUITABLE FOR CHILDREN
Children may not have a proper understanding of the gear shifting system, also sometimes they may forget to change the gear for more comfortable and easier riding. Which is why this system will adapt to their needs.
Bicycles' weight, is a very important criterion for cyclists. Therefore, with increased attention to the design and chosen materials, we offer low weight (about 1 kg), excellent strength and durability to our product.
By installing our fully automatic transmission system on the existing bicycles, there will be no need to have manual shifters, cables, derailleurs, cassettes or sprockets. This will reduce the bicycles' weight noticeably.
Although this system is fully automatic and offers wide range of gear ratios, lower weight compared to current bicycle gear systems, as well as other mentioned benefits, it still has a reasonable price related to these advantages.