Guys, you made me doubt myself. You gave me enough of a twinge of doubt and curiosity to do these tests. After all, I don't want to be the guy who blows hot air about some product from some relatively unknown Chinese seller. There's enough of that on this forum. So i did the appropriate science and put my standalone cycle analyst on the handlebars and filmed some video of the two CA's side by side. Went on 2 6 mile mile rides at 40+ continuous.
Unfortunately, the video is a wash because the camera was not angled correctly, the standalone CA's screen is kind of a matte, and it was cloudy outside. I've always had a problem filming the standalone CA because of this. It will be cloudy again in the next few days, so this is as good as it gets from me though.
So here is what i was able to recover from the video, stepping through it frame by frame to find the most legible shots from the CA. I am accelerating to 40 here from a stoplight. The standalone CA reads in the high 3400 range, whereas the direct plugin one reads in the 3500-3600 range. The direct plugin CA is reading about 4% higher watts.
The standalone cycle analyst read up to 200 watts less! i was shocked!! and that's even with a ~0.2A constant phantom current that this standalone CA may be adding to the readings.
I generally saw 2300w cruising at 42-43 while in a half-tucked position. Many motors i've played with draw this amount of power at 39 or 40mph.
ps, in my 'watts per speed' test video on previous pages, i ran the bike in both directions and held the throttle as steady as i could, in order to not skew the results. You can clearly see the direct plugin CA in those videos. If the standalone cycle analyst is 'balls on accurate', subtract about 3-4% from the wattage count then.
p.p.s. unfortunately, even with the 115% setting on the infineon controller, maintaining around 2400w of constant load in general ( some stop and go, some 5% hill grade climbing etc ) at around 38-43mph, this does result in a notable amount of heat buildup in the motor over that period of time at an ambient temperature of around 60F. It was hot, but not too hot to hold your hand on the motor. That being said.. on a 26 inch wheel, i think that your constant maintainable speed is indeed 40mph. Maybe you can maintain ~41-42 indefinitely if you did not have hills like i have though, if you get into a tucked or semi-tucked position. A 24" wheeled bike on a bit of a higher voltage ( 13S or maybe 14S ) would yield more continuous power and more torque with this exact winding, taking it from 'holy crap, that's fast!!' to 'you're insane!' territory. There is also room to hit the motor with 100A batt and more phase amps instead of my 80A batt, if you want to bang on the motor for short distances, or have long roads with no stop and go and it's not too hot out. I will keep my 80A setting in order to give me some motor headroom when the temps climb.
In other words, buy the motor already if you are interested. This seems to be the most efficient hub motor we can buy right now. If you want more power than this, and still want great efficiency you'll need to get a MXUS 3000W v2 or the ~4000w continuous Cromotor v3+ ( 0.35-0.33 lams ). Maybe they land in the 88% peak efficiency land rather than 90% peak efficiency land. That's still pretty good, compared to the 78-84% peak efficient hub motors we've been dealing with for ages.
Oh, and the wheel build quality is pretty good, considering that i've ridden this bike along at such high speeds through bumpy and potholed streets. I've only got maybe 200 miles on the motor, but so far, so good.
Anyway, i'm done playing unpaid salesman for this company. Any future posts will be about any problems i have with the motor, as the power handling stuff is sorted now. I will update more info about this bike in my bike thread.
https://endless-sphere.com/forums/viewto ... =6&t=62939