I thought maybe this would be deserving of a dedicated thread. Coming from a world dominated by larger quads - I have personally experienced that micros tune with a slightly different set of rules than larger high powered brushless quads.
I have my first silverxxx firmware build still needing bench time over a bad tune. It’s a 2s setup with a dm007 board. When I ran it with 1s motors - it was way overpowered - my brushless tuning instincts were right on the money - and I had it flying buttersilk smooth in a few adjustments. Well those motors melted down (of course) and a month later I still don’t have it reigned in on the new motor prop combo.
I feel I’m pretty decent at tuning when I work all the way up from scratch - adjusting p up from low values while d & i are turned down. Then raising d, then raising i. But I stink at taking a poorly tuned micro and adjusting it in from a starting point of a bad tune. Anyone else feel that way? Should I just commit to applying the while long process (feels longer with silverxxx firmware cause I can’t do the thing we do with betaflight to adjust values with a 3 position switch) or do all you gurus have words of wisdom or basic principles of correcting a bad tune vs tuning from scratch.
So here are some things I’ve noticed that are different about brushed micros (maybe it will help someone else)
They sometimes take a lot of p and even more d.
If it feels twitchy or too mechanical, I raise d even more.
Sometimes all the I in the world won’t overcome environmental effects and too much causes oscillation.
Parrot and gemfan props suffer a lot more prop wash and usually cant be tuned out like hubsan clears can.
I have to crank super rates up higher than large brushless to get the same rotational feel.
I feel like faster loop times open a larger tuning window.
Dang near any setup can be made to feel good in the air - if you can’t get it there - wipe it all and tune up from scratch.
You have to know what your tuning goal is - an acro machine or the “boxed” micro feel. Betaflight/cleanflight default setting are way more aggressive than any boxed micro. A lot has to be adjusted if you want that nano qx feel.
Agree, disagree, any tips to add?