La porket flight log.

Stambo · Post by **Stambo** » Thu Feb 19, 2015 9:28 pm

Maybe upping the yaw I term might help.

Post by **danhampson** » Thu Feb 19, 2015 9:41 pm

I've tried that. It seems to get worse as the power in the pack gets lower. It could possibly be because the arms are further away from the centre than on a zmr, blackout qav250 ect, as the arms on these models are angled towards the centre of the model and on the porket they are at the ends of the frame.
I will have to do a re tune when the 5045 props arrive, I'm hoping that they fix the issue.

Post by **danhampson** » Thu Feb 19, 2015 9:46 pm

I forgot to mention that I've had the I gain maxed out on the yaw axis and it didn't make any difference I didn't even get any oscillation which leads me to beleve that the thrust from the props is too weak to make the rudder hold, also the rotation speed is really slow, if I turn the yaw rate up the problem gets worse (more over rotation)

Post by **danhampson** » Fri Feb 20, 2015 11:44 am

Ive been through the whole setup again. ive calibrated the esc's and set up the radio, and then added the rest of the settings one by one (add one fly add next fly ect). And it turns out that its there yaw rate setting, if the yaw rate is set to anything above 0 the tail overshoots with only a slight increase in rotation speed, I still believe this to be due to prop authority on the rudder and hope that the higher pitch props help to cure the problem.

Tony · Post by **Tony** » Fri Feb 20, 2015 3:42 pm

Well Dan all I can say is "Your the Man"

Post by **danhampson** » Sat Feb 21, 2015 5:58 pm

The hq props that i ordered arrived this morning and ive had the chance to put a few flight on the porket to tune for the new props.

: 20150221_112232.jpg (2.67 MiB) Viewed 1595 times

: 20150221_112209.jpg (2.74 MiB) Viewed 1595 times

The hq blades are a lot stiffer than the 5030 gemfan blades

: 20150221_113654.jpg (2.64 MiB) Viewed 1595 times

These props have totally cured the yaw issue that i was having and make the quad feel really floaty, I like it.

Ive done a bit of pid tuning this afternoon heres where im up to, im using pid controller 1. the crash at the end of the video was due to the rotation rate catching me off guard.

https://www.youtube.com/watch?v=tbOkjid5wA0

KevG · Post by **KevG** » Sat Feb 21, 2015 6:07 pm

Looked good Dan, hope the fall did not break anything

Stambo · Post by **Stambo** » Sat Feb 21, 2015 7:02 pm

Nice flight Dan, looks like you are about ready for some smaller gaps and lower flying.

The oops at the end?
Been there done that.
Perhaps a little more altitude was in order.

Graham Lawrie · Post by **Graham Lawrie** » Sat Feb 21, 2015 9:04 pm

Nice flight Dan:) good area to fly in:) loads of room:) well done:)

Post by **danhampson** » Sat Feb 21, 2015 9:27 pm

KevG wrote:Looked good Dan, hope the fall did not break anything

just a prop kev, i've ordered some more 5045's now i know that they work and i like them.

Stambo wrote:Nice flight Dan, looks like you are about ready for some smaller gaps and lower flying.
The oops at the end?
Been there done that.
Perhaps a little more altitude was in order.

lol. i was supposed to be testing hard pitch stops little bugger was a bit quick, roll and a half before i realised i was just getting on the throttle when it touched down. Its so much more responsive with the 5045's.

Graham Lawrie wrote:Nice flight Dan:) good area to fly in:) loads of room:) well done:)

Its just the nearest place to fly. both football pitches are less than a 5 min walk. Once ive got it a bit more dialed in im going to find some different terrain's to fly ive been asking around and found a couple of abandoned quarries that are pretty close, one of them is about 600m x 300m they should make for some interesting flying

Tony · Post by **Tony** » Sun Feb 22, 2015 11:28 am

Nice flying Dan, pretty robust quad with only one prob broke....

Post by **danhampson** » Wed Feb 25, 2015 7:32 pm

I got to fly 4 packs this evening, trying out new pids and concentrating on throttle management. This is the last pack of the day. Enjoy.

https://www.youtube.com/watch?v=VTjt74UdXvU

Stambo · Post by **Stambo** » Wed Feb 25, 2015 8:33 pm

Nice flying, you have come a long way since those first tentative flights.
That goal post at 2:11 was a close call, I cringed.

Nice landing.

Next exercise, maintain constant low altitude at varying speeds and turns.

Graham Lawrie · Post by **Graham Lawrie** » Wed Feb 25, 2015 9:12 pm

Nice flight again Dan:) you have really mastered that flip landing:)

Post by **danhampson** » Wed Feb 25, 2015 9:41 pm

Thanks guys. Next round of flights I want to try and get the d gains sorted out I've still got a bit of bounce on hard stops (pitch and roll).
Once I've got a bit more stock of props I'm going to practice lower stuff. I'm off work next week and am going to try to get some hardcore flying in, if mother nature cooperates.

What are your d gains set @ Stambo? I know they would be different because of the different frame but I'm interested in seeing the differences in gains that people use.

Tony · Post by **Tony** » Wed Feb 25, 2015 9:44 pm

Very nice flying.... Question, when do you draw the line and say... Right these settings are great, now I can just enjoy the craft. Or is it a constant battle to get perfection... What is perfection? That flight to me was just awesome

Post by **danhampson** » Wed Feb 25, 2015 9:52 pm

To me perfection is super smooth video, no oscillation and no bounce on stops while still feeling crisp, sharp and connected. I'm getting closer with every flight I make. All my tuning now is done when I review the video shot from my flights. I record every flight and watch it back maybe 4-5 times looking for oscillations, bounce and general smoothness, then I make small alterations to the 3 profiles then fly each one to see the differences.

Stambo · Post by **Stambo** » Wed Feb 25, 2015 11:00 pm

danhampson wrote:To me perfection is super smooth video, no oscillation and no bounce on stops while still feeling crisp, sharp and connected. I'm getting closer with every flight I make. All my tuning now is done when I review the video shot from my flights. I record every flight and watch it back maybe 4-5 times looking for oscillations, bounce and general smoothness, then I make small alterations to the 3 profiles then fly each one to see the differences.

Yup, exactly what I do, although I do have in flight tuning set up now.
I will post up my settings tonight when I get home although they are far from what I would call perfect.

Stambo · Post by **Stambo** » Wed Feb 25, 2015 11:08 pm

Tony wrote:Very nice flying.... Question, when do you draw the line and say... Right these settings are great, now I can just enjoy the craft. Or is it a constant battle to get perfection... What is perfection? That flight to me was just awesome

Depends entirely on what you want, it seems Dan and I want smooth video but not at the cost of agility.
Someone else might be happy with a well handling quad and not be interested in the video so they don't need to be so fussy.
It is not a constant battle but rather a slow process to get to where we want.
The quad flies well long before you get to the stage we are looking for.

Lee · Post by **Lee** » Thu Feb 26, 2015 9:55 am

Yep If I just wanted a quad that flew well, my tuning would be over in 5 mins.
But to get totally smooth video, for a perfectionist (like me ) it can take quite a long time.

RC-Hangout

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