Field/Flux Weakening & Boost Button Fardriver Controler
- Thread starter 72V
- Start date
Yes I mainly drive in high gear. What other parameters are there? Like the VCU or Curve screen? I don't think those give much information. And I sent screenshots of all the information on the Paras screen. Also, what is LD? I'm not seeing anything by that label. Om assuming this is within the "Open Pro Line"screen?
Ok, i will try that.
i found this on electric & Co website. they claim the motor can hit 8000+rpm with field weakening.
Yeah that makes sense
I found a formula to calculate top speed, and based on the 5200rpm I saw this morning on the stand I should be hitting 60mph. So I'm thinking under load its still only getting up to around 4600 RPM. When I run the calculation at 4600, it comes out to exactly 54mph.
Good call on increasing the LD. I have it turned up to 500 and I can hit 70mph.
Curious what exactly this setting does. I want to turn it up more to see how much speed I can get out of the bike, but I thought I should find out what I'm messing with first. I don't want the bike to catch on fire or something lol.
Thanks again for your help, it's greatly appreciated!
Last edited:
Thanks for the Feedback.
In the manual the parameter is not really well described.
The on ly things I found
2.2.3 L DVOL
400-900, default 900, high speed idling noise matching parameters
2.2.4 L QVOL
Intermediate throttle voltage ( mV, VQH + 4 intermediate throttle
enabled)
FAIF ：
0~513 0 Starting resonance feature matching option 1
Note that when the vehicle motor performance is
good, VQH + 64= 6 times speed Hall detection can
further reduce the resonance noise.
16~63 Starting resonance feature matching option 2
64~256 General vehicle motor Hall characteristics
384 Jump type car AB15 is easy to report an error when
512 choosing 384 / 512.
513 AB15 alarm in absolute encoder of CN controller.
Other controllers: easy to AB15 error when used
+1024 The Fixed Bluetooth password is related to the product
number
2.2.5
All of my controllers have LD set to 212 as default.
Someone on ES wrote that he was told from his seller to increase LD to 900 to reach more rpm with his qs138.
I never needed to change this , as my 10kw hub motor reaches 80mph without field weakening.
In the manual the parameter is not really well described.
The on ly things I found
2.2.3 L DVOL
400-900, default 900, high speed idling noise matching parameters
2.2.4 L QVOL
Intermediate throttle voltage ( mV, VQH + 4 intermediate throttle
enabled)
FAIF ：
0~513 0 Starting resonance feature matching option 1
Note that when the vehicle motor performance is
good, VQH + 64= 6 times speed Hall detection can
further reduce the resonance noise.
16~63 Starting resonance feature matching option 2
64~256 General vehicle motor Hall characteristics
384 Jump type car AB15 is easy to report an error when
512 choosing 384 / 512.
513 AB15 alarm in absolute encoder of CN controller.
Other controllers: easy to AB15 error when used
+1024 The Fixed Bluetooth password is related to the product
number
2.2.5
All of my controllers have LD set to 212 as default.
Someone on ES wrote that he was told from his seller to increase LD to 900 to reach more rpm with his qs138.
I never needed to change this , as my 10kw hub motor reaches 80mph without field weakening.
Last edited:
Do you know of it will hurt anything turning it up higher?
Sorry, I do not know this.
The manual says 900 as default.
I would not go higher and make only small steps towards it.
From my personal experience with tuning, I always broke something when I wanted more.
That is the reason why I now have installed the biggest controller and the biggest motor I could fit in my scooter.
My build thread
The manual says 900 as default.
I would not go higher and make only small steps towards it.
From my personal experience with tuning, I always broke something when I wanted more.
That is the reason why I now have installed the biggest controller and the biggest motor I could fit in my scooter.
My build thread
Yeah that makes sense, I'm happy with the current speed of 70mph. I'm going to try playing with the 1 - 7 weak response settings now with the LD set at 500 to see how that affects things.
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