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  • February 24, 2021, 01:43:15 PM

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Author Topic: gain on KR timer?  (Read 354 times)

Offline Charles Hofacker

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gain on KR timer?
« on: September 03, 2020, 06:17:34 PM »
What is the "gain" function on a KR timer? and if you use a KR timer what is your gain setting?


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Offline pmackenzie

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Re: gain on KR timer?
« Reply #1 on: September 04, 2020, 10:44:46 AM »
Gain adds boost in the corners,as explained on the Keith's web site:

http://www.keithrenecle.co.za/Electric%20CL.htm#Govtimerinfo

I can't help with setting though,I have not used a KR timer (yet)  :)

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Offline Don Jenkins

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Re: gain on KR timer?
« Reply #2 on: September 27, 2020, 05:56:32 AM »
What is the "gain" function on a KR timer? and if you use a KR timer what is your gain setting?

The default gain setting is "1" which is little to no gain.  I have mine set on one plane at "4" and another plane at "5".  It's easy to change between flights, but the higher gain setting yields more RPM when going through maneuvers that draw additional current from the motor, so the planes' speed is constant and the lines stay tight all the time, or at least that's what you hope for!!

Don

Offline Matt Piatkowski

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Re: gain on KR timer?
« Reply #3 on: January 01, 2021, 10:42:08 AM »
Hello,
The gain parameter in KR timer is a "double edge sword".
Increasing it's numerical value will add RPM when the system wants to draw more current, for example when the model is entering the Wing-over.
Unfortunately, this RPM increase is not reasonably stable for higher gain parameter values while the model is climbing.

There exists RPM fluctuations that are clearly audible.

This has to do with the dynamic properties of the PID systems.

The highest gain I consider acceptable is 4.
Matt 


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