Lcd3

Ahmed55555

Finding my (electric) wheels
Dec 13, 2020
13
0
Hi, Id like to know what number do I set the P1 setting on the kt lcd3, how do I find the motor gear reduction ratio
 

Nealh

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Aug 7, 2014
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Tell us which hub motor you are using.
 

vfr400

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Jun 12, 2011
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the reduction ratio is 1. You'd have to oprn it and count the magnets or look for photos of it opened to find out how many magnets it has, otherwise try 46.
 

Nealh

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Aug 7, 2014
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Set speed limit to 25 km/h and P1/46, test ride using a GPS to see how far or if the odo readings differ.
If the LCD odo is out adjust P1 value down if over reading or up if under reading until they both read much the same.
Once you are happy with the reading adjust speed limit to what you want knowing that it will be pretty much correct.
 

Nealh

Esteemed Pedelecer
Aug 7, 2014
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P2 usually 1 or 6, depends on how many magnets are used in the hub for sensing.
 

vfr400

Esteemed Pedelecer
Jun 12, 2011
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P2 usually 1 or 6, depends on how many magnets are used in the hub for sensing.
That's for geared motors. OP has a direct drive motor so no speed sensor. You set P2 to zero which makes it use the hall sensors to get the speed signal.