Looking for guidance for first time quad builder. Thanks

G

Grifftech

Member
I have been following multi-rotors for awhile now and in th elast month have been doing a lot of research. I am itching to build a 250 FPV as this is what interests me the most.

I was wodnering if you could look at my parts list and see if you have any recommendations or see any glaring issues I may have overlooked.

Unfortunately I am only able to buy all the components through Newegg.com as I have a credit line with them but don't have the funds to buy from Hobbyking or any other site. So hopefully what I can get will be decent.

Thanks for any input.

Spektrum DX8 2.4GHz DSMX 8Ch Aircraft Radio w/Telemetry Module & AR8000Receiver
http://www.newegg.com/Product/Produc...0007-_-Product

Boscam 5.8GHz Cloud Spirit Circular Polarized Antenna Set SMA http://www.newegg.com/Product/Produc...9SIA1GK22D6992

Mobius 1080P HD Action Camera
http://www.newegg.com/Product/Produc...9SIA29C1290335

CC3D Openpilot Open Source Flight Controller
http://www.newegg.com/Product/Produc...9SIA3EX2981159

C250 ZMR250 250mm Mini Multicopter Quadcopter Carbon Fiber Frame Kit
http://www.newegg.com/Product/Produc...9SIA3EX2B97727

1804 2400KV Micro Size Integration Outrunner Brushless Motor CCW for QAV250 ZMR250
http://www.newegg.com/Product/Produc...9SIA3EX2B97739

RC hobby parts Emax Simonk 12A 12AMP Brushless ESC Electronic Speed Controller
http://www.newegg.com/Product/Produc...9SIA5H622G1945

Fat Shark Attitude V2 FPV Headset with Video Downlink Bundle
http://www.newegg.com/Product/Produc...9SIA4P02CU8430

Turnigy nano-tech 1300mAh 3S 45~90C Lipo Pack
http://www.newegg.com/Product/Produc...9SIA62H2CU6702

On-Screen Display OSD Board MinimOSD
http://www.newegg.com/Product/Produc...9SIA65420Y2829


I plan to get all the extras I need also, heat shrink, liquid electrical tape, zip ties, etc

Thanks for any help!!
 
holtneil

holtneil

Well-Known Member
Moderator
Hi mate and welcome the list is good but there are things that will not work for the set up
Battery need to be as you said but 4 cell not 3
If you using the mobius if i remember right it has lag on the video so its ok for recording but you cant fly on it i will put a video on here if I may be wrong ,but if i am right get this for the FPV
http://www.newegg.com/Product/Produ...re=sony_FPV_camera-_-0UF-006E-00067-_-Product
Also the ESC are a little low 20 amp min really if your going to run 6 inch props
Now the motors are 2- 3 cell lipo ,250 racing quads are 4 cell , I cant find any 4 cell high kv motors , and on a 3 cell I dont know if your get a good flight time 1300-1500mah 4 cell is the norm on a 3cell i think your going to need 4000mah now the problem is its heavy and bigger then the 1500mah 4 cell , i cant find any motors with high kv for a 4 cell set up on this site
 
G

Grifftech

Member
I may have to buy the motors from elsewhere then. I am lost on your explanation on the motors and what batteries then.

The Fat Shark Attitude V2 bundle comes with a FPV CMOS camera and TX.
 
holtneil

holtneil

Well-Known Member
Moderator
Hi mate the fat shark has its own camera so thats great didnt want you to buy the modius for FPV
Ok motors KV = rpm per volt so 650kv on a 11v =7150rpm the same motor 650kv on a 4cell 14v=9100
Now racing 250 quads scream with the rpm they pull so you need lots of battery also as your running the FPV off the same battery too
So a 3 cell would need to be 4000-5000mah this will not fit in a 250 frame , so then we reduce size ( in your hand size) to a 4cell short and dumpy 1500mah this will be man enough to power quad and fpv , not add to much weight , 250 dont fly long but 3 cell will not give you enough power for a normal race
 
G

Grifftech

Member
holtneil said:
Hi mate the fat shark has its own camera so thats great didnt want you to buy the modius for FPV
Ok motors KV = rpm per volt so 650kv on a 11v =7150rpm the same motor 650kv on a 4cell 14v=9100
Now racing 250 quads scream with the rpm they pull so you need lots of battery also as your running the FPV off the same battery too
So a 3 cell would need to be 4000-5000mah this will not fit in a 250 frame , so then we reduce size ( in your hand size) to a 4cell short and dumpy 1500mah this will be man enough to power quad and fpv , not add to much weight , 250 dont fly long but 3 cell will not give you enough power for a normal race
Click to expand...
Ok that makes sense. So what kind of motor should I be looking for to pair with the 4S 1500 mah lipo?
 
holtneil

holtneil

Well-Known Member
Moderator
Hi mate the motors kv is right you just need a 4 cell spec ? sunnyskys are good DYS another emax if you find one put a link on here so we can check
 
G

Grifftech

Member
holtneil said:
Hi mate the motors kv is right you just need a 4 cell spec ? sunnyskys are good DYS another emax if you find one put a link on here so we can check
Click to expand...
All the build logs I have seen so far for 250 quads based on the Blackout, ZMR frame etc all use 3S Lipo batteries and the motors are all 2s-3s. So I am am wondering why they went that way and not the 4S with 4S motor way?
 
holtneil

holtneil

Well-Known Member
Moderator
Sorry the motors I linked above are 4 cell I will look for some more in kit form if you feel the kit is better for you , I checked these are 4 cell
http://rctimer.com/product-1131.html
I see what you mean they are 4 cell but not had prop test done on a 4 cell if you go for the kit you cant go over the prop they come with if you just get motors you can get bigger esc and run 6 inch the video i link for you has 6 inch props for the test
 
holtneil

holtneil

Well-Known Member
Moderator
ecalc.com is a good tool to used this will work out flight times etc , a 3 cell will run a 250 quad but the FPV and quad will eat a 3 cell so the 4 cell will give you approx 4 mins racing easy , a 3 cell about 2 mins with FPV as you cant fit the bigger 5000mah 3 cell
with the 250 racing quads its all about weight .speed and flight times so they use 4 cell this will give you all that you need to race
If you go to rcmodelreviews on you tube he has done loads on FPV and racing quads , there is a quad called the mamba you can tilt motors on it to make it faster but your need to use the nase32 FCB as you can tell the board the motors are tilted so it will still hover level
 
G

Grifftech

Member
holtneil said:
ecalc.com is a good tool to used this will work out flight times etc , a 3 cell will run a 250 quad but the FPV and quad will eat a 3 cell so the 4 cell will give you approx 4 mins racing easy , a 3 cell about 2 mins with FPV as you cant fit the bigger 5000mah 3 cell
with the 250 racing quads its all about weight .speed and flight times so they use 4 cell this will give you all that you need to race
If you go to rcmodelreviews on you tube he has done loads on FPV and racing quads , there is a quad called the mamba you can tilt motors on it to make it faster but your need to use the nase32 FCB as you can tell the board the motors are tilted so it will still hover level
Click to expand...

Well I definitely need to try to find some 4s Motors then
 
holtneil

holtneil

Well-Known Member
Moderator
Hi the radio has had some mixed reviews , I used spektrum as they do very small receiver some dont so you need to look at the size of the receivers
one of the ways to do it is find a mini quad set up that works and copy the set up motors ESC etc that way you know it works well
as for motors one of these will do very well RC TIMER, EMAX, SUNNYSKY, AGM, T MOTORS all top class motors if you find some and are not sure just put a link up
 
holtneil

holtneil

Well-Known Member
Moderator
HI mate I have been playing with ecalc and I can get it to work on 3 cell set up but the prop pitch must not go over 3 degs so a 5x3 prop will work I also look up the mini mamba this set up runs 3 cell and 4 cell props stay the same may be its just for flight times the 4 cell is used the motors they use are sunnysky 2204-2300kv and on this set up they can run 6 inch on 3 or 4 cell, so I cant under stand why ecalc says no bigger than 5x3
take a look at the link
http://www.quadrysteria.com/store/p213/V2_Mini_Mamba_ARF_Kit_Bundles.html
 
holtneil

holtneil

Well-Known Member
Moderator
Hi I also found this on a 4 cell great flight times
  • Diatone FPV250LH V3 Frame
  • Cobra 2204 1960KV Brushless Motors
  • 12A Blue Series ESCs with SimonK Firmware
  • Gemfan 5030 Propellers
  • Naze32 with Multiwii
  • Frsky DJT Transmitter and Frsky D4R-II Receiver
  • Turnigy 9X with er9X Firmware
  • SONY SUPER HAD 600TVL CCD Camera – PZ0420 with 2.8mm Lense
  • Mobius / GoPro
  • Super Simple OSD
  • ImmersionRC 5.8Ghz VTX
  • Turnigy Nano Tech 4S Battery 1300mAh/1800mAh
  • Weight ~ 630g
  • Flight time ~ 9 minutes with 1300mah, 12 mins with 1800mah.
 
You must log in or register to reply here.
Top