Electrohub - Spider (Dead Cat) Config.

khostr

Member
Hello FliteTest members,

Christmas coming up i thought i was a great time to upgrade from my LaTraxx Alias to a self built quad.
I have been looking at parts and have some questions i would like answered so that i don't need to reorder parts that i have forgotten or that are bad.

Here is the list i have so far:
Transmitter: Spektrum DX6i
http://www.spektrumrc.com/Products/Default.aspx?ProdId=SPM6630

ESC: Afro 20amp
http://www.hobbyking.com/hobbyking/..._Motor_Speed_Controller_SimonK_Firmware_.html

Flight Controller: Naze32
http://abusemark.com/store/index.php?main_page=product_info&cPath=1&products_id=30

Servo Leads:
http://www.hobbyking.com/hobbyking/store/uh_viewitem.asp?idproduct=21758&aff=61689

Props: 9x4.7E CF
http://www.hobbyking.com/hobbyking/...ation_with_DJI_Fitting_1_pair_EU_EU_Ware.html

Battery: 4s 3000mah
http://www.hobbyking.com/hobbyking/store/uh_viewitem.asp?idproduct=8852&aff=61689

Motor: T2212-980KV RTF Motor
http://witespyquad.gostorego.com/t2212-980kv-rtf-motor.html

Now my concern are the flight controller and motors. Do you guys recommend the KK2.1.5 or the naze32 and why? And for the motors together with the props and the 4s they should each pull 1kg of thrust. I plan on adding a mobius, board camera and fpv gear in the future. Do these parts look good or should i pick others?
Also would using a break out cable instead of the electrohub system for the wiring be easier? the esc have bullets pre soldered making it easy? i can solder quite well so thats not an issue.
Thanks in advance!

EDIT: changed the flight controller from kk2.1.5 to naze32 :)
 
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makattack

Winter is coming
Moderator
Mentor
Hi, I can't really address the fc question as I have not used either. I am slightly more familiar with naze32 only because I just built a tricopter around a multiwii flip1.5 8 bit board.

That said, of you're parts list, those escs don't have becs, so you'll need to add one. Additionally, those motors come with 3.5mm bullets and the escs come with 2mm sized ones, so you will need to resolder a bunch of bullets. I think a distribution board instead of a wiring harness is just cleaner, more reliable, and easier to solder personally. At the very least, by soldering the motors directly tothe escs, I didn't have to fiddle with as much heat shrink tubing.
 
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khostr

Member
Thanks for the thoughts. I have been looking at the flip too. I have also changed the esc to the regular ones not the slim.
 

rcflyer729

fpv and rc planes
i would not buy the ntm motors i have heard some bad things about the quality I would get the sunnysky 1400kv motors I have never bought a sunnysky motor that i did not like they are really good quality If you are using 4s on them u might want to use 8in props The naze 32 is way better than the kk2 it flies so much better and is way easier to tune although the original setup is a little harder but it will fly really well without touching any gains
 

khostr

Member
Hey Rcflyer, i wouldn't mind buying the sunnysky motors but from their website they do not ship to the netherlands which is an issue.
 

makattack

Winter is coming
Moderator
Mentor
I've never bought sunnysky motors direct from the company... always via a local reseller... I would be surprised you can't find a local dealer in the NL or EU who sells sunnysky motors. They are great motors.
 

khostr

Member
I changed the motors to the ones recommended by flitetest on the ready to fly quads package (T2212-980KV RTF Motor). Now i think i will stay with the naze32 or should i go the the flip1.5 in the package aswell (preflashed for the spider setup)?
 
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Craftydan

Hostage Taker of Quads
Staff member
Moderator
Mentor
Those motors should work well, and be a bit cheaper than the T-motors.

I'd also recommend that you reconsider the 4S pack -- with the gear you've speced + FPV gear + Mobius, on 3S you should have *PLENTY* of power on a 3S 3000, and a fair flight time. you can later switch up to a 4S pack (these batteries don't last forever), but after you've gotten the feel of a larger airframe. the Latraxx is a failry good trainer for orentation, and flight controlls, but it lacks the mass of the airframe you're building, and will carry FAR more momentum. starting off grossly overpowered will only make your crashes faster and more destructive . . . save some of that for later ;)

The 3S pack shold swing the 9" prop on that motor just fine. when you switch to 4S, consider dropping down to an 8".

Also, think about cheap nylon gemfan props. You will break *MANY* props at an alarming rate. even when you've got the orentation thing down, it's amazing how easy it is to break a 9" prop . . . and CF props are more expensive and break *easier*. wahtever you decide to buy, I always recommend picking up *AT LEAST* 3 full sets, and consider 5 or more. don't want to be caught on the ground waiting for the snailmail to bring props to your door :p
 

khostr

Member
Thanks for all the help and feedback! I will have a look for some props and batteries :)

In the mean time i've started to scratch build an FT Flyer. I'll document the build once its done :)
 

Craftydan

Hostage Taker of Quads
Staff member
Moderator
Mentor
I see you have the same condition many of us struggle with:

ADD -- Airframe Distraction Disorder ;)
 

joshuabardwell

Senior Member
Mentor
I believe that those T2212 motors are clones or re-badges of the Sunnyskys. If so, then you can definitely swing a 10x4.7 on them on 3S. The quad is a little less responsive than it would be on 9" props, and I have had some issues with stability on fast yaw, which I attribute partially to the larger props. But flight time is longer and you get more thrust. However, if you are on 9" props, and later decide to go to 4S, you may not have to go down to 8" props, as the motors may be able to handle 9" props on 4S no problem.
 
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joshuabardwell

Senior Member
Mentor
I have been looking at these motors http://hobbyking.com/hobbyking/store/uh_viewItem.asp?idProduct=39312 I think they have a great amount of power and are good for a price. opinions?

I don't know anything good or bad about that motor, but if you are going to spend $20 on a motor, why not a SunnySky? They are known to be a great brand. I'd look at the 2212 980 kv or 1400 kv. Turnigy motors can be kind of hit-or-miss. Some of them are great; some are terrible.

I know I kind of sound like a shill for Sunnysky. I'm not getting paid by them or anything. I just think they're really good motors. They're well balanced. They consistently exceed their power rating. And replacement parts (bearings, etc...) are commonly available. If I could get a Turnigy motor or a Sunnysky motor for the same price, I'd pick the Sunnysky every time.
 

khostr

Member
the main issue is from Hobbyking EU warehouse or any EU store i don't pay import taxes. from all non eu countries i pay 44% over the total order in taxes \o/ yay dutch insane taxes..... so unless you find me a good EU store i'll be more than happy to buy them but not if i can get 3 NTM's instead of 1 sunnysky :)
 

joshuabardwell

Senior Member
Mentor
the main issue is from Hobbyking EU warehouse or any EU store i don't pay import taxes. from all non eu countries i pay 44% over the total order in taxes \o/ yay dutch insane taxes..... so unless you find me a good EU store i'll be more than happy to buy them but not if i can get 3 NTM's instead of 1 sunnysky :)

I don't know of any EU source for SunnySky. So, I see your point...