Jonca
10 mW
For few months I have been reading ES and other sources to learn about different options for e-assistance. I have a road bike with aluminium frame and fork and 25mm & 28mm 700c tyres on it. I want to point out that my goal is not to build a bike which climp hills or goes 40 km/h without pedaling. But a bike which would be as good (as possible) to ride as it is now, but just with a little help from the motor to keep the speed and save my energy when I have headwind, slight uphill etc. On that way I hope I could increase the range I can comfortably ride during a day.
For sometime already I have been thinking to purchase a q75 hub motor(BMSBattery seems to be the place since elifebikes doesnt have it anymore in stock). I dont know why but I find very little info/people s experiences about this motor. For example q100 seems to be quite common here, many nice builds with it.
LSW-675 sine wave controller with LCD is my most likely the choice as controller. There are not many controllers that are working with cencorless q75 and I have the idea in my head that sine wave should be quiet, good. So, since I want to keep the bike light as possible, I prefer front hub motors, want to keep my budget low. Is there any reason why I should concider something else than q75? As a battery the plan is to build one from 18650 cells. Mayby 11s or 12s(I believe the controller should handle at least 11s) for 201rpm motor to get around/close to 30km/h no load speed.
Also why I prefer some "powerless" motor is that I want a relatively long range from the battery + want to keep the weight down = motor should not consume much power to get long range from light battery. When I am riding in the city. Or am riding, for whatever reason, slower than 10-15 km/h (10mph) I should have now reason to use the motor. Also I am quite light weight, round 65kg, and there are no long steep hills where I m living. I really just want to increase my avarage speed on longer rides and to allow myself sometimes taking it bit easier and let the motor help. The goal is to have system which would be efficient and give its max power around 15-25 km/h and also to assist a bit after that till 30km/h.
So my fellow cyclists. Does somebody have bad experiences about q75 or LSW-675 controller. Or any other comments why I shouldnt do it in this way?
For sometime already I have been thinking to purchase a q75 hub motor(BMSBattery seems to be the place since elifebikes doesnt have it anymore in stock). I dont know why but I find very little info/people s experiences about this motor. For example q100 seems to be quite common here, many nice builds with it.
LSW-675 sine wave controller with LCD is my most likely the choice as controller. There are not many controllers that are working with cencorless q75 and I have the idea in my head that sine wave should be quiet, good. So, since I want to keep the bike light as possible, I prefer front hub motors, want to keep my budget low. Is there any reason why I should concider something else than q75? As a battery the plan is to build one from 18650 cells. Mayby 11s or 12s(I believe the controller should handle at least 11s) for 201rpm motor to get around/close to 30km/h no load speed.
Also why I prefer some "powerless" motor is that I want a relatively long range from the battery + want to keep the weight down = motor should not consume much power to get long range from light battery. When I am riding in the city. Or am riding, for whatever reason, slower than 10-15 km/h (10mph) I should have now reason to use the motor. Also I am quite light weight, round 65kg, and there are no long steep hills where I m living. I really just want to increase my avarage speed on longer rides and to allow myself sometimes taking it bit easier and let the motor help. The goal is to have system which would be efficient and give its max power around 15-25 km/h and also to assist a bit after that till 30km/h.
So my fellow cyclists. Does somebody have bad experiences about q75 or LSW-675 controller. Or any other comments why I shouldnt do it in this way?