Constraints on the electric motor on the bicycle?

Constraints of an electric motor on the transmission of a bicycle ?

Concerning the electric motor constraintson the frame :

We did a lot of stress tests on the frame, on the engine mount and we drew a lot of test parts and did a lot of simulations. It turns out that the constraints are actually quite small (at least much smaller than one might think).

Indeed, the peak power developed by the detachable motor for electric bikes will be much less than the force developed by a cyclist at 100% of its power.

A cyclist who on some movesA rider who uses his pedals during a sprint will pull with all his strength on the handlebars and will press fully on the pedals will put enormous stress on the frame in torsion, and in traction on the transmission, the peak power of a pro rider is about 2300w.

On the other hand, the motor for electric Bikes like ours, diffuses the power at a regular rate, it transmits a power much lower than the maximum power of the cyclist. He will transmit this net of power in a constant way, limited only by the autonomy of the li-ion battery, so the torque applied on all the transmission organs will be equivalent to the power of a cyclist who would be super endurant.

The electric pedal assistance for mountain bikes allows for a high average power output to the crankset, which greatly improves the cyclist’s performance over the entire effort, without the peak power output to the frame and transmission being any higher than when the cyclist is accelerating hard in a sprint.

And 95% of users use the LIFT-MTB electric motor to ride at a faster in average, and do not spend their time sprinting, adding their maximum power to that of the engine, the wear rate becomes equivalent to a normal wear of a user who would be in very good physical shape and who would simply be able to keep a sustained pace.

Constraints of electric motor on the transmission – Is it necessary to use a reinforced chain?

Certainly some parts of the transmission will have more stress, because you will logically ride more and further and longer.

But as seen above, this remains within the norm, and will correspond to the rate of wear of the transmission provided by the manufacturers, so from our point of view not necessarily need a Electric Bike type reinforced chainIt is best not to use very high quality chains that are sometimes open-worked (as in the photo on the right).

A more basic and slightly heavier chain is generally more resistant and sufficient.

Reinforced chain for electric bike – Available in our store !

The creator of LIFT MTB was an elite DH / 4X and enduro world cup racer for over 10 years.

We design, produce and sell the LIFT MTB electric kit since 2012, even if the kit is usable for any XC / all mountain / Enduro /Dh / road bike use, you can be sure the reliability will be there, because we tested it in the most extreme conditions!