First Quad Build - Cart Review

[sirGnano]

What's up fellow FliteTest members,

Planning on building my first quad and wanted to see if anyone could look through my cart? I'm looking to build a basic quad to start, no FPV/Cameras or anything like that. I already have a Dx6i (with a spare receiver). Some of the items I probably don't need (Like the Low Voltage Alarm as I believe the KK has that feature) but I left them in the cart because they are cheap. I've swapped motors 4-5 time now, there are so many options. If you see any major issues with my list please let me know. Appreciate any help.



NTM2830S-900 - NTM Prop Drive Series 28-30S 900kv / 270
HKz30A - HobbyKing™ 30A BlueSeries Brushles
017000053 - 8045 SF Props 2pc CW 2 pc CCW Rotation
017000057 - 8045 SF Props 2pc CW 2 pc CCW Rotation
260000001 - Hobbyking SK450 Glass Fiber Quadcopter Frame
067000002 - HobbyKing™Lipoly Low Voltage Alarm
Z22003S-25 - ZIPPY Flightmax 2200mAh 3S1P 25C
WH-5MM-BLACK - Turnigy 5mm Heat Shrink Tube - BLACK
B12A1062-06 - Turnigy Pure-Silicone Wire 12AWG (1mtr)
R12A1062-06 - Turnigy Pure-Silicone Wire 12AWG (1mtr)
015000099 - HXT 4mm to 6 X 3.5mm bullet Multistar
9001-AB - 3.5mm 3 wire Bullet-connector for motor
WHS-5MM-RED - Turnigy 5mm Heat Shrink Tube - RED
601A-12-10cm - XT60 Male w/ 12AWG Silicon Wire 10cm
9171000446-0 - Hobbyking KK2.1.5 Multi-rotor LCD FlightController
9171000297-0 - KK2.0 Super Bright Status and Alarm LED
9171000298-0 - Y Adapter For KK2.0 Super Bright LED
258000011 - 10CM Male to Male Servo Lead (JR) 26AWG
9171000033 - Hobby King Quadcopter Power Distribution Board

I can post the links to the items if need be, just let me know.


Thanks,

Ed

 

[Craftydan]

A 900kv motor on 3S is not going to like an 8" prop. Way too short, especially for that size of motor.

I'd recommend going back and looking at recomendations on it's listing, but my kneejerk guess is it'll probably be much happier with a low-pitch 10" or 11" prop.

 

[sirGnano]

Thanks Dan. Am I better off getting larger props for these 900kv motors or keeping 8" props and getting different motors?

Possibly Turnigy Aerodrive DST-1200 ( http://hobbyking.com/hobbyking/stor...ess_Outrunner_motor_1200kv_AR_Warehouse_.html
)

 

[Craftydan]

That depends on what you want to do -- I'd pick the prop length more on how you want to fly, then find a matching motor.

For a docile trainer craft or a stable camera ship going for slower motors with longer props is typical wiht the thrust-to-weight sized relitively low for a heavier payload (3:1-ish with the expected payload, but no less than 2:1) . For something with a bit more agility, faster, shorter props are the trend with higer thrust-to-weight ratio and shorter flight times. Again, kneejerk numbers here, but on 3S in this class an 8-9" prop will lean toward agility and like a stout 1200kv motor, where 10-11" will lean more toward stability and like the 900kv motor.

That being said . . . I'm not really a fan of NTM's on multirotors. They're inexpensive and well made, but the bearings are inconsistant, and regularly degrade -- the vibrations from that make them unsuitable. On a fixed wing, they're perfectly fine, but the vibe won't confuse a control board on a fixed wing.

 

[sirGnano]

Gotcha, that helps. I think I will go with the Turnigy Aerodrive DST-1200 and the 8" props for now. I may also order a set of lower kv motors and larger props to test the difference (or replace the 1200kvs when I crash!, lol).

Thanks for the input Dan.