View Full Version : succesfull takeoff and crash against oaktree

05-08-2010, 09:30 AM
Todays flight test went pretty well, good lift off, reasonably stable, but still too itchy in commands.
Crashed against tree and bend right boom. So now time to build second new frame with thicker tubing.

Current issues :
Interference from Motors or ESC's on Video
Weak Frame (10x10mmx2mm aluminium)
When too close to quad interference on Gyro's from 35Mhz RC/TX

On video, you see first test take off from ground, and back-flip (no damage)
Second start from ground going to 2/3 throttle
Then trying to gain stable flight
Last but not least, hit against tree and one brooken/bend right arm/boom


05-08-2010, 09:54 AM
any pictures of the left overs ?:P?

05-08-2010, 11:55 AM

Do you have any expose on your radio or radio settings for quad?? If your quad is responding to hard on your stick movements, lower down stick movement sensitivity either by using expose/dual rates from radio and from configurator.

That way you can make it less sensitive and your trees will suffer less :P


05-08-2010, 12:53 PM
still too itchy in commands...You're getting there. Try...

Transmitter factor = 13 (Set it to 12 or below if transmitter stick movement is to sensitive)

Roll P =7 (Increase by incriments of 1 if squad feels sluggish)
Pitch P = 7 (Increase by incriments of 1 if squad feels sluggish)
yaw P = 12 (Increase by incriments of 1 if squad feels sluggish)

Set all Heading hold and "Stable Mode" pid values to Zero.

05-08-2010, 02:02 PM
RCvett, if the P's are already at 7, I wouldn't go higher than that, unless by increments of 0.1.

05-08-2010, 03:47 PM
Many thanks to you all, i sure will use the input after the new one is built.
Now the question is which to choose from :
The round alu tubing at 347 grams or the square tubing at 450 grams for a full cross, without all the extra mounting hardware ;),
Both will remain one meter long, both have a better thickness then the 10x10 before the crash. 2mm thickness instead of the 1mm before.
For the round tubing the though part will be the center part, nothing to be found that can sit four round tubes in a square.
I guess i will go for the round tubing, as the U shape i found snugly fits over the round tube for the motor mounts.

05-09-2010, 06:26 AM
Sounds good.

Gorilla glue a wood dowel in there to make it even stronger if you want. Square tubing will also resist bending more than round tube if that helps but round looks better.

05-09-2010, 11:37 AM
Actually square CF tube breaks really easily if you twist it. If you have even a smaller crack or some internal integrity problem on CF boom, it breaks amazingly easy. I know I broke 3 of mine ;)

Bending and things like that it can take a lot without breaking...


05-09-2010, 01:02 PM
I agree, both through mechanics of materials and crash experience. If you have a round hollow cross-section with the same area, then that has strength in both bending and twist.

05-09-2010, 09:32 PM
hey guys,
Thanks for the very informative stuff. I did not reply today, My dad passed away this morning at 84, and i will be off the forum for a while.
Take care and i'm sure to take up the thread soon.


05-10-2010, 12:24 AM
hey guys,
Thanks for the very informative stuff. I did not reply today...

LukeMy condolences to you and your family. Our thoughts are with you.

05-10-2010, 06:34 AM
Sorry for that Luke.
We will be waiting for you here.

05-10-2010, 04:21 PM
Our condolences from here too to you and your family Luc.


05-10-2010, 04:53 PM
Condolences Luc, on the passing away of your Dad.
Veel sterkte in een moeilijke periode gewenst.

05-10-2010, 05:49 PM
condolences dude ... sorry to hear that your dad is gone to a better place ...:(

may his body and soul RIP !
je komt er wel !
helaas is het lever en bitch ...:!!!

05-12-2010, 01:25 PM
Luc, Alhoewel wat laat, maar toch gemeend gecondoleerd met jullie verlies! Sterkte!


05-16-2010, 09:18 AM
To all of you who put your thoughts here,, thanks from my hart.
Just got on the forum today after last friday, which was the most difficult day in my life until now.


I will be back shortly


05-16-2010, 10:36 AM
...I will be back shortly...It's really good to hear from you.

We'll have you flying and breaking props like the rest of us in no time, when your ready.

06-04-2010, 04:43 AM
Hi all of you,
Thanks for all your condoleances.
Just to let you all know, that i'm going to start building again upcomming wkend ;)

Cya soon

It's really good to hear from you.

We'll have you flying and breaking props like the rest of us in no time, when your ready.