Electric drive for bicycles

With this innovative Rubbee electric drive you can make from your ordinary bicycle electric one simply by mounting this device on any bicycle in just a few seconds

8/31/14 10:46 am chumakdenis 1

Today I would like to talk about quite interesting device that, as you might guess from the heading of the article, can turn any bike into electric.

Cool, isn’t it? Well, let’s get more info (I know you’re eager to know more=)

Rubbee is a high-efficiency electric friction drive for bicycles. It changes the way regular bicycles used to be converted into electric ones. With an integrated clamp mechanism it can be mounted on bicycles in just a few seconds and the innovative drive motor with an integrated battery pack keeps you going without having to pedal for more than 15 miles (24 km)!

No analogues








All e-bikes on the market right now have multiple design and user-experience flaws. If it is a factory-made electric bicycle it will probably be very heavy and will look... Well, lets say boring is the word for it. And what happens to your beloved regular bike you already have? It gets sold or forgotten somewhere in the basement. 

If we look at the conversion kits available right now we will see that all of them require a toolbox and some skills in electronics and mechanics to install them. And don't forget all the wires and the battery pack - both of them make your bike look like a DIY experiment. Conversion kits also add about 10-15 kg of weight to your bicycle.

1786.jpgWell, Rubbee provides a solution to all of those problems. Enjoy the benefits of a high-power electric bicycle without getting your hands dirty or ruining the aesthetics of the bicycle you already have.

* You don't need to buy a whole electric bicycle if You want one

* You can switch between a regular bicycle and an electric in just a matter of seconds

*You don't have to carry a heavy and inconvenient battery pack or a whole bicycle to recharge it

* You can share it with Your family members and friends

* Your bicycle can be electric without any hassle that comes with regular conversion kits


        * Range (without pedaling): 25 km (15 mi)

        * Top speed: 25 km/h (15 mph)

        *  Weight: 6.5 kg (14 lbs)

        *  Peak power: 800 W ( 250 W Rated )

        * Integrated battery pack: 20000 mAh

        * Full recharge time: 2 hours

Innovative solutions

Rubbee is full of innovative solutions and features

Cast friction wheel:  These rollers  were developed according to a special polyurethane formula.It provides maximum grip while keeping your bicycle's tire from wearing off too much. This is where we make sure the power is transferred via rubbing and not grinding. And that's where the name comes from - Rubbee. The muscle of Rubbee - electric motor electronically limited to allows peaks of power up to 800W is integrated inside this roller. With the help of some ultra-cool mechanical parts, of course.

Multifunction power button: The power button functions as an ON/OFF switch and as a battery level indicator. Integrated blue-colored LED blinks corresponding to the state of charge of the battery pack. The faster it blinks - the less power you have left. It also shows the status of the batteries when the Rubbee is being charged. 

Integrated suppression system: It makes sure Rubbee always provides a constant force on the tire of the bicycle thus allowing minimum slip even in wet conditions. This feature also enables Rubbee to be used even on the bicycles with rear wheel suspension where the geometry of the bicycle is always changing. Suppression system only engages when the fixation pin is removed. That means that you can ride around with Rubbee on Your bicycle even without it touching the tire. This feature comes in handy when Rubbee "gets out of breath".

Battery pack: Rubbee has an integrated battery pack custom made just for this product. It delivers extremely high currents to power you up the hills. The lifespan of this pack is over 2000 cycles - this will make sure You can recharge Rubbee every single day for 5 years without loosing any range. We also integrated a custom made electronic battery management system just to make sure the battery pack delivers what is expected.

Multipurpose connector: Rubbee has only one electronic plug. It uses the same port to connect the throttle / PAS sensor and to connect the charger. Ingenuity in simplicity.

Waterproof construction: Versatility is the word for Rubbee. And that includes weather conditions. Rubbee can be used even when it is raining outside because all electronics and the drive unit itself are waterproof.Suppression system and custom cast roller makes sure that there is minimum power loss even when the tire gets all wet and muddy.

Rear LED light: Safety first!Rubbee has an integrated super-bright LED rear light which shines bright red. It turns on automatically when You turn Rubbee on. And it also looks cool.

How to use Rubbee?

It is simple - that sums up everything. Take a look:

Rubbee can be mounted in few simple steps:

Clamp it on the seat tube;

Remove the fixation pin to enable suppression system (You can leave it in if You want to ride around with Rubbee disengaged from the wheel);

Connect the throttle/PAS sensor;

Press the ON/OFF button;

Just reverse the order to remove Rubbee from the bicycle.

Rubbee can also operate with PAS (Pedal Assist Sensor), we include it for free to Your order together with a throttle so You can choose which method of control to use. Here's how it looks:















PAS sensor

Can be used with all bicycles

Rubbee can be used on an extremely wide range of bicycles with only few requirements:

Seat tube diameter: Rubbee fits on circular seat posts with a diameter of 22 - 35 mm. This covers the majority of seat tubes used in standard bicycles.

Vertical height: Rubbee needs 80 mm (3.2 in) of seat tube. If there is not enough space, just lift Your seat up a little bit and You are good to go!

Throttle: The throttle must be fitted only on the first initial installation of the Rubbee. It stays on the bicycle event without using Rubbee. We supply throttles which fit standard handlebars with 20 - 23 mm diameter. It is most likely Your bicycle has handlebars with this diameter.

Wheel size:  Rubbee can be fitted on any size between BMX and the largest 700c wheels.

Frame type: The unique thing about Rubbee is the way it works with most bicycles. And that includes full suspension bikes. Take a look.


The Rubbee team








Rubbee team is quite small, but this team is really powerful. In two years they've worked through 5 generations of Rubbee and a countless number of mechanical, electrical and design challenges.They team currently consists of four core members:

Gediminas Nemanis: The project manager and inventor of Rubbee. Built the first prototype two years ago and haven't stopped ever since. Has a degree in mechatronics and a flair for management. Coordinates production, supply chain of the components and every little thing to keep the project on-time and going forward.

Mindaugas Bliujus: The design engineer. Has a masters degree in vehicle mechanics and a passion for everything with wheels. He is also a SolidWorks professional. He is our go-to guy when it comes to design and engineering of mechanical parts for Rubbee. Gained his experience designing various electric vehicles.

Laurynas Jokuzis: The electronics guru with a degree. Knows everything there is to know about electric vehicles and electronics. Responsible for making Rubbee go faster and further. He also gained his experience building various electric vehicles - from scooters to electric vans.

Jonas Juralevicius: latest addition to the team responsible for marketing, legal matters and logistics. Coordinates all abroad operations and distribution from our London headquarters. Currently studying marketing at Middlesex university in London. Passionate about entrepreneurship, sales, international trade and everything on two wheels.

Story of Rubbee

Story of Rubbee began two years ago from a single sketch on a piece of paper:


















After about two months of work, the first working prototype was built in Gediminas's garage. It weighted 16 kg but was good enough to prove that the idea can actually work. Here's how it looked:


















The first prototype was enough to impress Mindaugas and Laurynas so they joined the team and a version 2.0 was born, structure of it is shown below:














This time it went faster and further.. But still it was just a prototype. So they worked to improve the structure and overall look of Rubbee. Here is what they came up with, the version 3.0:















Team knew that they were getting close to having a working product so they did not stop there. They rethought the suppression system, improved the looks and electronics and made a pilot production run of version 4.0:
















With new electronics inside it had all the technical specifications they were looking for but the design was still a bit off for the consumer market. So they concentrated purely on the looks of Rubbee and did not stop until were finally happy with every aspect of it. That's where they understood that not only have an idea of a revolutionary product but the actual product itself. So they needed a guy who could take care of marketing, business and future logistics - that is where Jonas joined the team. Here is what we have today, the latest version of Rubbee:





















I bet that a lot of people would like to buy Rubbee.But it  is a sophisticated piece of engineering and team and engineers nead to deal with a lot of things before mass production:start a first production run to bring the manufacturing cost down,buy components, equipment and tools to assemble large quantities of Rubbee,hire people to help kickstart production,acquire certificates (CE, ISO:9001, RoHS etc.),prepare Rubbee electronics for mass production,set up facilities for assembly and test more samples(wow,a lot of job to do).

But,anyway, they promise to bring us their new product this winter.Well,we don't know is it true or false cause only time'll show, but let's be optimistic=)

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