RC India

Black Widow is the name I gave to my 2nd Scratch Built Quad. This is adapted from a design which i saved long long back.

Size is adjusted to take on a 2 axis gimbal it is 475 mm frame.

First Quad details --> http://www.rcindia.org/multirotors/scratch-built-quad/msg228923/#msg228923

Since Pictures convey a lot better, here is the built log...

1. First Quad
2. Design cut and pasted on 3 mm Ply
3.Estimating the length of Arms
4.checking the size for Battery and Gimbal

5. 4 layer Beeding ( wooden strips) to have strong Arms
6. Checking the angle and length of Arm to keep camera away from prop wash
7. Getting accurate length and angle of arms
8. Arms Stuck and motor mounting done

9. Four layers of Beeding were not thick enough to fit in DJI FC so slot cut.
10. Still after slot cutting the thickness was less so increased the thickness by adding 2 more layers just below the ply frame. ( not arms)
11. Decent weight ( 160 Grm) for a scratch wooden Frame
12. 838 Grms total weight except camera & Video TX ( total planned weight to be less than 1.2 Kg)

13. Marking thrust center ( center point of 4 motors )
14. Black Paint --> hence the name Black Widow
15. Gimbal Placement and clamp
16. Fitting in Progress. X rotor 20 Amp opto ESC ,  landing gear from Steel Wire, 2312 racerstar Motors

17. FC  placed
18. Landing gears fixed
19. Final ready

I have flown it without Camera & Gimbal to test and it has performed well.

Will upload more once I do flight with Camera onboard....

regds
Saurabh
 

That was a super clean build. And I know it flies perfectly. Just missed on the video part....

Looks great! Loved your innovative thinking. Show us the flight footage too.

Hello Friends,

I am yet to master the arial filming. This is the maiden with 2Axis Gimbal on the quad.

https://youtu.be/tnZxX8qPjTY

https://youtu.be/OVAPsuWE-es

regds
Saurabh

Best thing is no props in view.

Some changes .... reduced the frame size by 80mm. Removed the gimbal due to weight so now the camera is fixed.

Here is footage of a recent visit in hills. I am still learning to fly smooth.

https://www.youtube.com/watch?v=YzcpFM0CJA8

nice keep up the flyin..i just finished my own quad build today....
these are really exciting...

Wonderful flying and awesome scenery. Post more videos once you get complete.

First time edited video can you suggest a good easy editing sw.

Nice and clean build sir,
There is very little vibration sir, you can add 3m vib absorption tape to avoid it, also there is option for inbuilt servo gimbal for camera, may be you tried it sir,
One thing to ask sir , what battery capacity do you used, and how much flight time do you get?

5000mah 15-20 min fly time.

Will surely try some sort of damping to camera.

These orange props were new and without balance.

Is it 3s or 4s battery?

3s

Well that's nice...sir

That is awesome build sir,

I use "Shotcut" video editing software, its free and easy to use.

1)What are the rates that you are using for this quad?
2) Is there any specific reason to reduce the size by 80mm?

Thank you.

Thanks for comment.

I will try shortcut.

Rates are 100% for Pitch, Yaw and Roll. ( I adjusted gains by enabling variable ch of TX to X2 of DJI.) So I found it stable @100 % on the fly. More precise tuning is possible with setting gains separately for PYR.

I wanted to have long flight time so, I removed 2 Axis Gimbal then removed additional motor mounts which were 50mm long ( reducing 60 grms) and placed motors on the wooden arm directly.

Changed props from Black ABS to orange ones saving another 20-30 grams.

Now best I get is 20 min fly time without Camera payload (70 Gram). With camera it is 15 min fly time.

Planning to get a small FPV camera with DVR & transmitter to have video down-link.

Thank you.

"Black Widow" looks solid @rastsaurabh   {:)}

Might I suggest adding the vibration dampeners from your gimbal or do a DIY one like this - https://www.flitetest.com/articles/anti-vibe-camera-mount
Gave me great results on builds without gimbals.

Thanks.

I intend to at-least have Pitch control for camera. So i have put hinges. soon i would put servo and connect it to F1 of DJI controller.
That way i will have control on camera on Pitch axis. Now here i have a challenge how to introduce damping.

I have Yi camera which is on the bigger side.