Massive vibrations from Pyro motor ( finally got it ) -I +P +S

[mkovalcson]

Originally Posted by marcosp

Hi everyone. Very interesting to read! I am almost sure I haven't seen the problem at all because I started using the 650 after stretching to 550SE and therefore reducing rpm. I am flying at 1600/1800/2000. Maybe the motor never gets to resonate. I do have spectrum analysis inu Vbar but let me just say my Logo is as smooth as it gets. I've not been flying it lately because I am waiting on new lipos for it but I sure will check those vibe readings!

The V-Bar vibration tool isn't quite as sensitive, but I'd be curious to see what it says.
I know you have an SK-720 hanging around somewhere. You might just stick it on your 550SX frame and spin it up on the bench to compare readings.

[marcosp]

Good idea! Still I am not the type who looks for problems I don't have, but in the spirit of fellowship I'll take a look.

I just need to wait for John to come back into Argentina like a ninja carrying my otherwise impossible to import LiPos. And many servos. And a mini Vbar. And... you get the drift...

[mkovalcson]

Originally Posted by marcosp

Good idea! Still I am not the type who looks for problems I don't have, but in the spirit of fellowship I'll take a look.

I just need to wait for John to come back into Argentina like a ninja carrying my otherwise impossible to import LiPos. And many servos. And a mini Vbar. And... you get the drift...

All I know is that I have never had a heli that had vibrations so bad that I couldn't use the Skookum auto-level feature. So this was a first for me. With the configuration changes I made to the RPM control on my 100LV, my 550SX is now as vibration free as I could want.

Even when it was vibrating like crazy, it flew great. It just disabled my auto-leveling because of all the vibrations.

[Seasick78]

Originally Posted by marcosp

I just need to wait for John to come back into Argentina like a ninja carrying my otherwise impossible to import LiPos. And many servos. And a mini Vbar. And... you get the drift...

This does my heart well. "Counter-Economics" at its best... Yeah baby!!

[taosgraveyard]

Originally Posted by marcosp

Good idea! Still I am not the type who looks for problems I don't have, but in the spirit of fellowship I'll take a look.

I just need to wait for John to come back into Argentina like a ninja carrying my otherwise impossible to import LiPos. And many servos. And a mini Vbar. And... you get the drift...

OFF TOPIC ALERT

Still a ways to go on this trip...
In Paris right now, visited with Mona Lisa and 5,000 tourists today. Then NYC and Connecticut to get our swag, then Seattle. I arrive buenos aires may 27.

I miss flying but I gotta say buenos aires, Turin, Vienna, Salzburg, Innsbruck, Budapest, Paris, New York, Seattle, buenos aires makes for a nice springtime jaunt.

[mkovalcson]

Originally Posted by taosgraveyard

OFF TOPIC ALERT

Still a ways to go on this trip...
In Paris right now, visited with Mona Lisa and 5,000 tourists today. Then NYC and Connecticut to get our swag, then Seattle. I arrive buenos aires may 27.

I miss flying but I gotta say buenos aires, Turin, Vienna, Salzburg, Innsbruck, Budapest, Paris, New York, Seattle, buenos aires makes for a nice springtime jaunt.

That added useful info to the thread.

We know that we shouldn't expect to hear anything back from Marcos for at least 3 weeks.

[Andy from Sandy]

Sorry if I missed this but have you tried the KSA mode. I believe it is for high pole count motors.

I have a friend running an Align 800MX and setting that mode makes the motor run very smooth.

It is a shame that Kontronik didn't sort this problem out for you but maybe individual cases are of no concern to them.

[mkovalcson]

Originally Posted by Andy from Sandy

Sorry if I missed this but have you tried the KSA mode. I believe it is for high pole count motors.

I have a friend running an Align 800MX and setting that mode makes the motor run very smooth.

It is a shame that Kontronik didn't sort this problem out for you but maybe individual cases are of no concern to them.

I adjusted the RPM Control parameters as listed in the title (-I+P+S) and the vibration issue I had is gone now. I'm tickled with the current vibration I'm seeing in flight and on the bench. It is now up to the high standards I have with all my other Kontronik ESC's and Kontronik Motors.

So I'm all set no matter what else happens and now that I understand the issue better, I have no reservations with Kontronik motors going forward.

My next heli will probably have something like a Kosmik 200 + Pyro 850. Time will tell.