Depending on pulley choices usually 255 or 265. The c to c is 60mm. Use the configurator under resources on my site.
on flat ground or going downhill?
I would think the flat ground speed on that config would be more like 25 mph.
Not done with the build yet, but should be flat ground. My reasoning is that boards tend to hit their max efficiency pretty easily given that the Raptor with its theoretical max speed of 45km/h seems to hit it pretty easily. My Evolve GT hits 26mph as well, which is about 1 mph lower than it’s unloaded speed (27mph).
single or dual?
Dual should get the 32 mph
Single I would think less
Dual. Single would probably get the same as well assuming it has the power to reach near max efficiency. Going dual motors mainly increases torque/power not top speed, though it can increase speed if a single motor doesn’t have the power to reach high efficiency. Build log here!
Received my motor and it does indeed look great. Now I need to source a motor pulley. Enertions keyway is a different size…anyone know if @torqueboards motor pulley will work?
They should be the same I would think
torqueboards 16T pulley is the one in my build log. It’ll work, but the motor needs a key. I’ll pick one up from home depot later. It also needs a notch for the grub screw, which i’ll try to drill into the shaft with a dremel.
I have one of these.
Very comfortable at 55-70 degrees in a tuck while doing 35-38 mph. Hoping to break that speed though with your 12s6p pack and hollow core deck. When are your 63 mm motors coming??
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I use that flannel riding jacket and regular jeans but I just ordered some alpinestar crank jeans with integrated padding and kevlar. Incognito!
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I just setup my VESC with these babies and seem to be hitting 24-25k eRPM with 23 volts (6s) which indicates a kv rating of about 150. Perhaps I did something wrong @chaka?
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Are you talking about the 200kv or the 170kv ones?
Sorry same as yours 200kv
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Duty cycle is only showing 82%.
I tested these on a calibrated kv tester. I’ll make a video and post it tomorrow.
How did you get it to top out at 82% on that screenshot?
So when controlling from the control panel on BLDC tool (bottom right), I couldn’t get duty to go past 50% for some reason. I only got 82% duty cycle by using my remote.
After I switched the phase wires around, I am now getting higher erpm (with remote)! Though still not as high as 200kv.
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The proper way to evaluate the results from realtime data is to divide the power by the motor current to find the actual voltage being delivered to the motor.
In your last screen shot we are seeing the power equaling 15.6W . We divide that by the motor draw of 0.73 amps and we get 21.4V
Now we take the ERPM of 27856 and divide it by 7 pole pairs and get an actual rpm value of 3979 rpm. We can now divide 3929 rpm by 21.4V and we get 185.5kv but we are only running at a duty cycle of 94.4% so we need to calculate for that. We take 185.5kv and divide by 94.4 and we get 1.97 which we now multiply by 100 to find the actual or estimated kv of 197kv.
The actual kv of these motors measures around 203kv with a calibrated instrument. There seems to be a small margin of error when measuring with the realtime data plot on the VESC.
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I got a slightly different number for the KV before calculating 94.4% duty cycle, but still landed almost exactly@ 197kv.
15.6W/.73=21.4V
27856ERPM /7=3979RPM
3979/21.4V= 185.9Kv
185.94/94.4= 1.97
1.97*100= 197kv
Sounds perfectly reasonable to me. Totally checks out. 
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exact same number as mine, nice!
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