Why do we use the throttle ?

The LIFT MTB motor for bike can use the both technologie, Throttle or / and Crank captor, we generally used the throttle only because that is realy efficient.


In effect crankset sensors (PAS)  for the power gestion are imposed by a europeen rules to homologate electric bicycles, it is therefore in the collective unconscious that it was necessarily the best solution, being given that the other manufacturers use it by obligation.


But it is not because politically they impose a technological choice that is the best solution...


So after numerous tests we chose to favor the manual accelerator, as the same as all other off-road sports (motorcycle, quad ect ...) because it is logic and simply the more effective for mountain bike use.


 Compared with a pedal sensor, a throttle is a better and easier way of controlling your assistance when the track is hard.


The big advantage is that, unlike a pedal sensor, where you are forced to pedal to be assisted, use of the throttle makes it possible to elicit assistance only when needed. 


So when you ride downhill or on the flat, you are not required to trigger the assistance. Hence a net gain in autonomy.


It uses a lot of energy but is very effective in technical passages. It helps you to better anticipate a steep hill, you can gain momentum beforehand. 


Your speed is not limited, it is all the more effective ...


You can walk with your bike and accélérâtes realy slowly to don' have to push your bike.


We try different accelerator release: grip thumb (difficult to manage) and can pause interaction problems with the shifter , the trigger has left index or  finger or thumb ( photos below) remains in our opinion the most practical and ergonomic and efficient ...

So the throttle is the best choice for hard mountain riders..


Our accelerator-integrated battery charge indicator is more ergonomic and tougher than some screens .

Position :


The throttle is reversible you can use it at the left index or left  thumb, so it is easy to try the best solution for you.


1/ Position for left thumb

2/ Position for left index

You can see Under the removable interface for the index. (inclued in all kit)

ebike throttel




Watch our video about the throttle operation :



P.A.S for lift mtb v3 kit
Option P.A.S for lift mtb v3 kit



If you need absolutely a pedal assist type pedelec or P.A.S, pedal sensor, it is possible and easy to add it in option, clic on the link below for more infos.

e-bike throttel
e-bike throttel

Can i add torque sensor on my mid drive kit ?

moteur pédalier vtt seul bosch


 Regarding the torque sensors present on many commercial bicycles already motor equipped , and put forward by other manufacturers, for exemple : the Bosch mid drive motor only, or the yamaha mountain bike motor only ...


We don't use torque sensor because our system throttle + P.A.S is really more efficient.


That's why :


Case number 1, Crankset motor with torque sensor and without trigger. (Commercial e-bike)


When we have for example 3 level of assistance number 3 for example, on levels of assistance which make for example:


Level 1 = 33% of the maximum power

Level 2 = 66% of the maximum power

Level 3 = 99% of the maximum power


We ride level 3 so the engine helps 33% all the time and as soon as we force more the torque sensor detects it and goes to level 3 the time of the effort and it therefore sends 99% of the maximum power.


So if there is a sudden odds, like with a classic pedal bike a bit louder, and whether we like it or not the motor does all the work for us.


Usually due to little or no physical effort on the part of the rider, the unpleasant impression of being on the bike.

If the setting is different on rolls then in assistance level 2.


We still have our basic assistance at 33%, then as soon as we force more the torque sensor detects it and goes to level 2 for the time of the effort and it therefore sends 66% of the maximum power, but we want 99% it lacks power.


Of course you can change the level of assistance, but you still have to take your hand off the handlebars to change the level of assistance on the screen, and generally when you need full power quickly, it's never the time. to take a hand off the handlebars !!!!


There are the vibrations, the imperfections of the ground, to change position on a small on-board computer, while trying to look at the screen so as not to misplace this position, but not too much so as not to end up in a bush, all at the same time. change gears because obviously we are not on the right gear, in short you can see what I'm talking about ...


Moreover, if ever, for example, an obstacle on the ground prevents the cranks from turning, without a throttle the bike stops because you no longer pedal, so you end up pushing ...


Conclusion of using a torque sensor without throttle (as on commercial bikes):


With a torque sensor and only the pedal sensor either we do not force to overcome the obstacle and we do not exercise, or there is a lack of power, (very often there is too much power) so that remains generally super assisted use on the factory settings, we feel embarking by the power especially in the technical parts, where nothing replaces the finesse of the use of a throttle coupled with the analysis of the human brain which decides to the necessary power, so it is not more efficient.


Case number 2, Crankset motor without torque sensor and with trigger. (LIFT MTB).


When, for example, we put 30% of fixed assistance to the potentiomètre on the adjustment of the pedal sensor, we know that the MTB pedal motor helps at 30% of its maximum power all the time as soon as you turn the cranks, so if you have a sudden odds, as with a classic bike you pedal a little harder but always with the little boost defined at the start of 30% for example.


So we always force a minimum to overcome the obstacle, it's still use more cycling but with a help defined by the user at the start, so we need to use a minimum of the legs and we still do sport and we do not does not feel taken on by the bike if you do not decide to.


However, if you ever want 60% or really 100% of the power directly over a few tens of meters or more, a simple throttle on the thumb or index finger without thinking without removing your hand from the handlebars is enough, and even if you do not pedal, as for example an obstacle on the ground prevents pedaling for 2 or 3 meters, you can continue to advance for a few meters without pedaling and without putting your feet on the ground.


Conclusion LIFT MTB with pedal sensor and throttle:

It's very efficient and intuitive, the pilot analyzes himself what he needs as power, and he is free to put just the right amount of power where and when needed.


So the choice is made fully and we do not force as on the model with the torque sensor, either we manage or even with a greater measured force by forcing a minimum at its convenience.


In short, these are two different approaches, but from our point of view not absolutely enough to focus on a torque sensor at all costs, because in pure efficiency, the throttle + pedal sensor as on the removable electric motor LIFT MTB, is more efficient than a torque sensor from a classic E-MTB.

e-bike kit made in france