Show Us Your Scratchbuilt Multirotors - Page 36 - RC Groups
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Dec 06, 2012, 05:39 PM
we dont NEED roads!
AcroFPV's Avatar
The stilts didn't effect my flying at all, but they did break on the first hard landing. All four broke in the same spot. The updated landing gear is the pool noodle. I dont expect to have any problems with them.
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Dec 06, 2012, 07:49 PM
Registered User
This is my second build. It's a big step up from the 10g motors and 5" props my first one used. Vertical ascent is crazy fast on this thing. I haven't tuned the KK2 for it yet, but it's already super stable. My goal was to build the cheapest quad possible using 10" props and 3s LiPo. (with the KK2.0 I already had)

Thrust to weight ratio: 3.3 to 1

Flight time is still unknown. I flew it hard for 8 minutes and didn't hit 3.3v. Maiden was this morning.

EMax GF2215/25 motors
Hobbywing Skywalker 20A ESCs
Gemfan 10x4.5
DIY birch frame (with screws with rubber caps for legs LOL)
KK 2.0
HobbyKing 6ch TX/RX
GForce 4000mah 3s batteries

I am more than pleased with the results.
Dec 07, 2012, 08:50 AM
Registered User
This is my very first rc build. Its the rcexplorer tricopter with the modified plans from Colorex, to fit 12mm arms.

Specs:
12mmx 12mm wooden arms, 1.5 glass fiber body
KK 3 board, DT750 motors and APC slowfly 10x4.7
HK A30 esc's with Simon K firmware
MTM about 500mm and auw 915 gram
Devo 8s tx, AX801 rx

Planning to maiden it tomorrow, depending on the weather.

A strange thing I already noticed is that the servo is twitching, even when the board is not armed, is that normal?
Dec 08, 2012, 07:34 AM
Registered User
The maiden flight was not very succesful. When I try to lift off, the tricopter spins counter clockwise. I tested the gyro's and they are correct. I also tested the rudder input and that's also correct. When I adjust the yaw and roll pot on the board nothing changes. Anybody any idea what can be wrong?
Dec 08, 2012, 09:15 AM
Registered User
jimbob69's Avatar
U need to reverse the yaw input on the board, don't know how to do this on that board but that's what u need to find out,
On the kk2 it's from 100 to -100 or something like that.
Nice tricopter!!! Hope you get it in the air soon
Dec 08, 2012, 06:24 PM
flying beam
blackmoon's Avatar
My ghetto AcroQuad 450gr with batteries

Naze32 FC

Hobbyking 10A

Turnigy L2205-1350 Brushless Motor (100w)
Dec 08, 2012, 06:46 PM
Registered User
eyesonsky's Avatar

mini QuadH


For some indoors FPV

160mm motor to motor / 240mm diagonal
67g pine wood frame

FC: openpilot CC3D
Motors: Turnigy C2020 3500KV (on the way)
Props: 5x3 GemFan
ESCs: Himodel 10A
LiPo: 3S Nanotech 950 mAh
Receiver: Spektrum AR500

AUW: 270g

+FPV
Camera: Keychain, VTx: 5.8gHz powered by a 120mAh 1S LiPo





Dec 08, 2012, 07:00 PM
James not bond
jy0933's Avatar
Quote:
Originally Posted by eyesonsky
For some indoors FPV

160mm motor to motor / 240mm diagonal
67g pine wood frame

FC: openpilot CC3D
Motors: Turnigy C2020 3500KV (on the way)
Props: 5x3 GemFan
ESCs: Himodel 10A
LiPo: 3S Nanotech 950 mAh
Receiver: Spektrum AR500

AUW: 270g

+FPV
Camera: Keychain, VTx: 5.8gHz powered by a 120mAh 1S LiPo





wouldn't 5" prop a bit too big for 3s+3500kv?
Dec 08, 2012, 07:24 PM
Stop me before I build again!
Quote:
Originally Posted by jy0933
wouldn't 5" prop a bit too big for 3s+3500kv?
Depends on the motor. Since this is a 60w motor 5x3 might be too much, a 4x2.5 might be a better fit. Would love to see a review once its flying.
Dec 09, 2012, 09:03 PM
Registered User
eyesonsky's Avatar
Quote:
Originally Posted by jy0933
wouldn't 5" prop a bit too big for 3s+3500kv?
I dont know. Its my fisrt mini quad DIY build.
Thanks for the advice.

Quote:
Originally Posted by brontide
Depends on the motor. Since this is a 60w motor 5x3 might be too much, a 4x2.5 might be a better fit. Would love to see a review once its flying.
I also have order 3000kv http://www.giantshark.co.uk/m160612-...-p-404951.html
maybe better for this setup?

I cant find where buy 4x2.5 CW and CCW props, any shop idear?
Dec 10, 2012, 04:53 AM
Registered User
Self made Scorpion Y650 looks like the HK Scorpion

http://www.youtube.com/watch?feature...&v=9RPSqE3ZjZI


for more Pic ore information look at the Board:

http://fpv-community.de/showthread.p...0-Y3-Wood-Made
Dec 10, 2012, 02:55 PM
James not bond
jy0933's Avatar
Quote:
Originally Posted by eyesonsky
I dont know. Its my fisrt mini quad DIY build.
Thanks for the advice.



I also have order 3000kv http://www.giantshark.co.uk/m160612-...-p-404951.html
maybe better for this setup?

I cant find where buy 4x2.5 CW and CCW props, any shop idear?
my suggestion will be something like 1800-2200kv for 3s/// or 2s for your motors
Dec 11, 2012, 01:21 AM
Registered User
Quote:
Originally Posted by jimbob69
U need to reverse the yaw input on the board, don't know how to do this on that board but that's what u need to find out,
On the kk2 it's from 100 to -100 or something like that.
Nice tricopter!!! Hope you get it in the air soon
Do you mean the Yaw gyro? I checked the yaw response and it seems correct, it turns in the opposite direction of the movement; push tail to the right, motor moves to the left.
Dec 11, 2012, 10:33 AM
Quote:
Originally Posted by eyesonsky
For some indoors FPV

160mm motor to motor / 240mm diagonal
67g pine wood frame

FC: openpilot CC3D
Motors: Turnigy C2020 3500KV (on the way)
Props: 5x3 GemFan
ESCs: Himodel 10A
LiPo: 3S Nanotech 950 mAh
Receiver: Spektrum AR500

AUW: 270g

+FPV
Camera: Keychain, VTx: 5.8gHz powered by a 120mAh 1S LiPo







The keychain cams have live video output now? hows the quality?
Dec 11, 2012, 11:29 AM
we dont NEED roads!
AcroFPV's Avatar
I use a keychain cam as my FPV camera and the quality is great.

here's some video from it:
FPV is hard (2 min 48 sec)


You have to get the V2 808 cam, and make sure its not some fake 808 knockoff. This is where I got mine:
http://www.ebay.com/itm/180937263580...=p5197.c0.m619

It will only do video out, not audio.


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