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TBS Discovery.

Started by ashimda, October 11, 2014, 07:34:40 PM

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Dharmik


pravesh736

Hi, I would like to clear something, I fly in Manual with cg off (within1cm) mostly because I don't care to balance it too much. I never have jello and vibes. Jello and vibes are caused due to unbalanced equipment. Also for Fpv onboard recording to be jelo free, pids need to be 5% lesser than LOS setting. Motors to need to be balanced and then props and motors in the end have to be balanced again. And if u fly after doing that ul not have jello at what ever cg. Cg off will cause drifts and dips.

Edit- Having jello with wrong cg means some motors have to work harder which causes faster rotation of unbalanced mass(motor,prop). Havin off cg of quad does not cause cg change of rotating bodies so no reason for them to vibrate.

akhilzid

+ in case of energy, all motors work together while @ CG centered will be  efficient than  1 or 2 motors hard work when off CG.

ashimda

From what I have experienced, "jello" is caused not only through vibrations but mainly because of the rolling shutter effect. On bright days video will show more jello than on overcast or low light video recordings. Those people using Go-Pro cameras, reduce the rolling shutter effect by shooting video at a higher frame rate.(1080@60fps)
Vibration induced jello can be reduced significantly by flying in manual mode( which scares the crap out of me) I have yet to experience reduced jello effect by playing with the CG.
On the TBS frame getting rid of jello is frustrating, but Im getting there. 

pravesh736

Use original Dji arms. Similar stuffs are all excuses.

Use phone vibration app to dynamically balance motor prop combo.

ashimda

Dji arms are on the way. I have downloaded Seismograph(android) and balanced my motors and props. I have dynamically balanced then as well.
I have ordered Graupner props, which I hope will reduce vibs even more. In manual mode(naza) I get good results, but Im not confident in that mode.

roshan.dixit

Ashimda you are right manual mode is bit stressfull

ashimda

What can I say but, I told you so. Practice practice practice that's what I'm doing.