Glad someone(u) put this together, as majority of riders have no idea. One important factor when deciding for a full fat or a light ebike is the riders weight, as it will have an enormous effect on consumption if you don't have enough Torque, I would set the tiping point at around 75kg, if you whey less go for the light ebike(lower Nm), if more definitely go full fat.
aleszverca
This toque curve seems to be for old motors as Bosch Gen2, Shimano 8000 etc., as max torque at the graph is 75. Very interesting to see the torque curve for actual motors, as it`ll be way more different.
romansvystun
The most important part about this video is the torque curve chart and it was flashed in a second before it’s gone.
Zetler
Right on FC. It took you less than 10 minutes to unlock the enigma of electric bike motors. Thank you.
daviddarwiche
Good explanation! This is why I don't understand the popularity of SL bikes. I don't mind if my ebike is a bit lighter--but not at the expense of power.
LoamReaper
Something I have been long aware of from my days modifying MX bikes in the 70's. Loved your presentation though and think most will find it easily understandable.
I would comment on the piece about 1000W motors. Down here I do see more than a few of the Bafang 750W and 1000W motors, which sadly are easily modified to run a bit too powerful. However, as a track builder I will point to your comment about torque - that is most definitely an issue on the trails. The Bafangs and a few others can put out 95+ NM which really rips up the trails as it causes a lot of wheelspin under power if worked hard - made worse by many of them being in badly designed bikes which have too much weight forward causing rear end instability.
NoNotAChance
Thanks for the lesson FC. Guess I just have to keep pedaling faster on my mid-power Levo SL to stay with my full-power Levo friends.
billderas
Well, this is very informative, educational even. Thanks for putting out there! 👍
jeanmarc_in_Hudson
thank you for the further edjucation! great info.
mikes.
This was helpful🤙, Brose has 90Nm but torque curve is disappointing, interesting.
BikingBadwithTC
Thanks for this entertaining and informative video on torque and power. In particular, appreciated viewing the "torque vs rpm" curve characteristics of the different motor drive units. Is the "feel" of the pedal assist determined by the MDU manufacturer's algorithm only? Or, a mutual collaboration between the MDU and e-bike manufacturers?
dk
Great break down. Have you had any issues with bosch lock rings coming loose?
curtisrausch
I would suggest looking at the comparison as if you are using a rechargeable drill. At the low setting, you have high torque (NM) and you can drive those tough screws. At the high setting, you have much faster speed (Watts) which you need for drill bits. Which one is better depends on what you are trying to do. If you do lots of climbing, torque is the key (NM). If you are a flat lander, it's go as fast as you can (Watts). Is this a reasonable way to look at it?
Charlie-wtct
I have a slow cadence - 58 or so - so Torque is important for me!
kayakutah
Francis - I'm picking up what you are putting down. lol
However
I'm looking at the New Orbea Rise ( have you ridden one yet ?) - EP801 which supposedly is the Full 85nm but limited to 500w. I hear bikes with 85nm and 600watts are pulling away on climbs - I'm thinking about the new Rise but to me full power is 85nm and 600w
LeoScarboroughMTB
Fantastic info, thank you! Ordered a cadence sensor for my Wahoo head unit. 😊 Now to train at 67 rpm.
CHIEFSFAN
Nice video, very interesting! However, there is a gross error when you talk about watts and speed. You forget to consider that it's not about the absolute speed of the bike, but the speed of the motor. In other words, with a light gear, all motors are capable of reaching their peak wattage, whether it is 300, 600, or 1000 watts…."
oettam
wait.. if the torque curve graph is accurate, that means the majority of the time on my turbo levo, I'm only at between 35-55NM?
jeffhuang
Torque is what you can do, and power is how fast you can do it.
eric
Your principal of working out the motor power is correct but your formula is wrong. The motor power is it's torque times the angular velocity. You state the angular velocity in RPM or Revs Per Minute. The power in Watts should be calculated by the torque in newton metres multiplied by the angular velocity in radians per second.
