‘Rubbee’ – Portable e-Bike conversion kit

Rubbee can transform any bike into an electric bike in less than a second. Adaptable to the majority of classic bikes, its exclusive friction system will allow you to reach a speed of 32 km/h without the slightest effort. With a price between 699 CHF and 897 CHF, Rubbee is unbeatable.

It looks like a car vacuum cleaner, an iron, or some other household gadget. However, once installed, it becomes pretty clear exactly what it is. It’s kind of like a treadmill for your bike’s rear wheel. However, instead of the rear wheel turning it, the X provides an ample power boost to turn any old bicycle into an e-bike. In theory, it’s a flawless concept. In reality, well, I’m not so sure.

Rubbee X is probably the easiest electric bicycle conversion kits to install. Attach the lock mechanism onto the seat tube of Your bicycle and insert Rubbee X into it. There’s also a small wireless cadence sensor that must be attached to Your pedal crank before the first ride. But don’t worry – no wires or magnets go to or from it, just two cable ties to secure it and You’re good to go ! Rubbee X is considered to be the best e bike conversion kit regarding ease of installation.

Rubbee is a friction drive. It has a rotating drive roller at the back end of the system which directly touches the rear wheel of the bicycle and helps You move forward. Simple. It provides additional power directly to Your rear tire when You need it the most.

Rubbee X is controlled by an easy to install PAS (Pedal Assist Sensor) or in simpler terms – wireless cadence sensor. The sensor is mounted on the bicycle pedal crank and it provides information about when and how fast the person is pedaling. By knowing these things and combining them with the speed of the entire bike, Rubbee can control the amount of power independently without any user interference. When You are pedaling – Rubbee provides power. You stop pedaling – Rubbee stops providing power and starts freewheeling . Rubbee becomes a natural extension of Your muscle power. When a hill is encountered and Your speed is decreasing but pedaling rate increases Rubbee enables a higher power output. High speed and slow pedaling will have an opposite effect – a lower assistance level will be provided. Rubbee X makes these calculations and power modulations multiple times a second.

The maximum assistance power level of the ebike conversion kit can be controlled via the main button. Just press is to cycle through different power modes. ECO / CRUISE / POWER modes are available depending on how many batteries are installed. ECO is available with 1 installed module, CRUISE with 2 modules and POWER mode becomes available when all 3 battery modules are installed. These modes can also be changed via the smartphone application.

When pedals are turned backwards for half of a revolution, regenerative braking mode is enabled. Since Rubbee X is an ebike kit with battery, when a long downhill section is encountered the regenerative braking can recharge the batteries. Normal operation is automatically resumed once pedals are turned to move forward. When the batteries are fully charged, the regenerative braking mode will not be available until the batteries are discharged to the allowed limit.