kiwifiat wrote:Jan 18 2020 3:48pm
You need the circumference of the tire and the number of pole pairs the motor has. You will need to remove one of the side covers to count the magnets. Pole pairs = number of magnets/2. Alternatively you could ask the manufacturer about the pole pair number but ymmv.
Get back to me with that data and I can assist you.
THEDON82z1 said:kiwifiat wrote:Jan 18 2020 3:48pm
You need the circumference of the tire and the number of pole pairs the motor has. You will need to remove one of the side covers to count the magnets. Pole pairs = number of magnets/2. Alternatively you could ask the manufacturer about the pole pair number but ymmv.
Get back to me with that data and I can assist you.
Hello I believe it's 15pole pairs 11inch tire /circumference of 34.54 inches/87.73 cm. Rated at 2400 rpm according to the Seller. Also what is the exact formula for mph (start to finish). I want to write it down and put it in my notes.My scooter is 60 volts. However eventually I am going to Hot Rod my 72volt Onyx RCR. I am going to need it adjust the ct22 on that. Plan to do 2 post on both of these rides. Thanks bro for all your help.
. If you have set the display for MPH then the display microcontroller is asking you for the frequency in Hertz at say 60MPH.
You can use metric or imperial to do the calculation but since you want MPH let's use imperial.
There are 63360 inches in a mile so in 60 miles there are 60x63360 = 3801600 inches.
There are 3600 seconds in an hour so at 60 MPH your scooter is covering 1056 inches per second.
Your tire has a circumference of 35.54 inches so your tire is rotating at 1056/35.54 = 29.71 revs per second.
Your motor has 15 pole pairs so the frequency on any one of the Hall sensor wires will be 15 x 29.71 = 445.65 Hz so lets say enter 446Hz at 60MPH.
eKZQSN said:I have something odd happening. Over the course of a day or two, either the trip odometer, total odometer or both seem to randomly reset to zero. Any ideas why? I have pin 1 (yellow) always wired to 96v. Pin 2 is connected to 96v, but through my switch. Pins 3 and 4 are both connected to the frame as a common ground as I am using a Kelly controller. Pin 5 is connected to 12+ which is also only active when my switch is turned on and the 96v is converted to 12v. Any ideas?
eKZQSN said:My current dc-dc converter (96v-12v) has a common ground. This forces me to have the frame be grounded for both the 96v battery and 12v system. I suspect this is causing problems not to mention how easy it is to ground out the battery on the frame. I’m going to replace it with a dc-dc converter that isolates the two voltage systems allowing the frame to be just the 12v ground.
I’m curious myself how you can manage the motor torque and display the mode.
Any thoughts on what to enter for parameter 1 when programming the display using 6610 password?
Not trying to give you a hard time bro, but all the settings parameters to enter are covered at the beginning of this post. I had the same issue and of if you find my replies it should answer most of your questions.Best of luck!superbike1 said:Hi Team smart dudes all you you who can help me out in here PLEASE
My ebike is nominal 96v battery when it fully charged shows 108volts when it completely drained shows 85volts
My QS 273 v3 hub motor around 8K.W when I bought it and hopefully it's true because on their website shows one thing but when you receive it's might be the other, anyway PLEASE help me to calibrate or adjust very nice speedometer CT-22
MY front Rin 21 inches but with the tire goes up to 27inches whole tire back one is 26inches
is shows 40mph but the actual true speed is 20mph how can I make it right correct I can get to P-0000 but what numbers should I enter ??
MJSfoto1956 said:kiwifiat said:On the basis that your tire circumference is 1.695m and your hub motor has 16 pole pairs the answer QS gave you of 157Hz - 60km/h is correct.
60000m/3600s = 16.67 m/s. The circumference of your tire is 1.695m so your wheel is rotating at 16.67/1.695 = 9.83 rev/s. Your motor has 16 pole pairs so the frequency on any of the Hall sensors will be 16 x 9.83 = 157.28 Hz.
Repeat the calculation using 96560m if you want to enter settings for 60mph.
THANK YOU!
That is what I was looking for.
M
Tandwiel said:Hello,
Thanks for the necessary clarifications on the programming. Really helped me out.
But for the speed settings 0 and 1 I have different thoughts.
0-xxxx for speed. I find 0-0190 to be the right setting.
1-xxxx for mileage. Same setting: 1-0190
I found this setting via mileage. Drive a known distance, read the display distance, calculate deviation, adjust setting, repeat. 420>215>187>195>190.
Speed is same setting. But if you want true mileage and safe speed, you CAN make the display show little higher speed.
With my 18"rim and 1914mm circumference, I cannot find a relation to 16 poles and/or 60 km/h. But the 0190 setting seems accurate.