Show me an efficiency curve with peak at max speed :O
Even if it doesn't decrease like an ICE motor, it still decreases.
pchen92 said:
If you don't know this website http://www.ebikes.ca/tools/simulator.html , I would advise you to play a bit with it, it should help you.
We
don't care about mathematics because we are talking about
real values, real consumption. Again compare apples with apples. We want facts, not theoretical formula.
I won't send you my colleagues thesis on electric motors
Are you serious ?!
You don't care about mathematics but the website you just sent me is
FULL ONLY MATHEMATICS since it's a SIMULATOR.
You are talking about real values but I've never seen an experiment curve here, and even less from the BBS02.
Obviously, you should learn from your colleagues ...
Again, you don't know how to read a curve...
I didn't want to talk about it but I need to teach you how to show what you are saying.
Let's take a Ninecontinent 3007.
The speed is in km/h since it's a hub motor (no gear) but let's say it's like rpm. I let you make the conversion.
(I'm too kind : you know, junior high school equation : P=2*Pi*R)
I see the
maximum efficiency is at 57km/h and the
efficiency at 0% is at 67km/h,
10KM/H difference / 15% it's fu**ing big. Max eff at 85%. (
max efficiency at full speed you said ?!)
I want to decrease the power consumption at max speed, means I'm at 0% efficiency (haha,
real values you said ?!) when I'm at full speed.
Thanks to the gear/chainring, I can decrease the motor's speed and stay at the same bike's speed.
If a decrease the speed of about 10km/h (15% less than the max rpm), I'll get max efficiency.
52T instead of 44T : 18% less,
I decreased the power consumption 8)
I just showed that you don't know AT ALL what you are talking about.
Je ne m'abaisserai pas à montrer celui qui a la plus grosse à coup de "thèses de mes collègues" :/ je ne dirai pas mon job et tout le monde s'en fiche mais apparemment j'en connais un peu plus que toi sur les moteurs et comment analyser les données que l'on me donne.
Tu n'es pas obligé de répondre
Bye !
My main problem is I have a bad Chinese mountain bike, then the top speed is 40-45km/h at full motor's speed (full throttle). That's why I thought to change the chainring instead of the gears.
If someone has the BBS02 experiment curve, please send here !