Mark_A_W wrote:If it doesn't fit 7 speeds and a disc, it's useless.
You can fit 7 speeds and a disc on an X5, so why can't 9C do it?
icecube57 wrote: I just purchased this front and its being shipped 2 day FedEx. I hope to have it Thursday or Friday. Ill post a full review.
icecube57 wrote:Apparently my item shipped. The weight. 24.3lbs?!?!?!? Im supposed to be getting motor only? wonder what else is in the box....
icecube57 wrote:What causes a motor to draw more current. I just got my motor in and its factory sticker say 36v 600w 10x6. My GM pulled about 1800-1900w under load. This new 1606 is pulling about 2400w-2600w under load. Its actually causing my controller to heat up vs the GM I could run several 15-20 miles and it get luke warm.
johnrobholmes wrote:My beef with such large diameters- lacing up a wheel with 1 cross spokes is a nightmare. Just isn't going to build up a long term reliable and serviceable wheel.
Russell wrote:icecube57 wrote:What causes a motor to draw more current. I just got my motor in and its factory sticker say 36v 600w 10x6. My GM pulled about 1800-1900w under load. This new 1606 is pulling about 2400w-2600w under load. Its actually causing my controller to heat up vs the GM I could run several 15-20 miles and it get luke warm.
If the new motor is drawing more power under load then assuming it's connected properly it's also likely delivering more power to the pavement than the old motor and should be faster up hills.
Using the simulator at ebikes.ca with the parameters from your signature, 64V/45A, and assuming a controller resistance of 0.08 you're talking a predicted peak power for the 1606 of 1710W at full throttle with ~70% efficiency for a draw of 2440W or right about what you're getting. The same parameters with the "Golden 500W" motor yields peak power of 1040W with 55% efficiency or 1900W, again close to your results.
Hey Chris and thanks for the detailed feedback here. The issues about the lacing, narrow rim, and spoke crossing over the valve hole are rather ridiculous, but that is something that can be addressed easily enough by us rebuilding the wheels at this end. Nine Continent really don't have their heads screwed on straight when it comes to these kinds of details.
I am surprised there would be any difference in the amount of regen that you get. That is a detail that should depend entirely on the controller and shouldn't really be affected by the motor per se. It is possible that either the higher pole count or the lower V/rpm of this rather fast winding affects the controller's regen rate, but this isn't something that would be intrinsic to the hub. I am assuming you are using a regen controller right, and not just relying on the back-emf voltage to exceed the battery voltage?
Turbine noise sounds, Interesting. I guess these giant side covers are like huge resonant cavities. I'm pretty sure that if we had a sinusoidal rather than a trapezoidal controller then both the 273mm and the 205mm NC motors would be as stealth, smooth, and silent as a Crystalyte hub.
The reason that this motor is drawing a fair but more current than your 9C or golden is because we had it wound with a faster wind, comparable to the 10x6 winding of the 205mm motor. If you were to compare it side by side with that, you'd find that it has slightly lower current draw all else the same because of it's better efficiency under load. I wouldn't use this winding at more than 48V unless you really need the top end speed.
The rear hubs we have with 14mm axles, for front we stick with 12mm because there can be lots of issues fitting 14mm front axles inside forks with lawyer lips. But your torque arm should still work all the same, since both the 12mm and 14mm axles are 10mm on the flats.
Hi Chris, yes the phase wire seems to be the same gauge as used in the 205mm 9C motors, which is NOT thick enough for a 2500 W setup! I'd say about 1500 W max, which would be a 48V 35A pack/controller combo, and that would give you a nice comfortable top speed while sticking to readily available battery and charger standards.
Since the motor is a faster wind than your others, it requires more phase current to achieve the same output torque, and this would result in both the controller and the motor leads getting hotter. For the kind of system that you are running, I would think that the same hub but with a slower 8 or 9 turn winding would be more appropriate as you suggest. However, you could for sure replace the phase leads through the axle with 12 AWG and then have no worries about those wires overheating in your 60V 45A system. The 4310 mosfets are only so-so, about twice the resistance as 4110's, so you could reduce the controller heating in half with better fets. With those changes I would have any worry about the system integrity.
But in the end, if you are running at 60V then the unloaded RPM is some 45+ MPH, which is well beyond a normal cruising speed and not an ideal pairing between pack voltage and hub, unless you have a CA-DP or other device to limit your power consumption at the upper end.
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