RunRyder RC
WATCH
 4 pages [ <<    <     1      2     ( 3 )     4     NEXT    >> ] 16529 views POST REPLY
Home✈️AircraftMulti-Rotore-Multi-Rotor Main DiscussionDJI › Dji 550. 3s or 4s?
01-14-2013 04:54 AM  7 years ago
Nuttzzy

rrNovice

Midland Texas

MyPosts All Forum Topic
right thats what im getting at gotta match your power and props to your weight..

and HAHAAH he called a gopro a "Toy" HAHAHA thats Awesome.
Beep Beep, Honk Honk, Over and Out Rotorhead
SHARE  PM  EMAIL  Attn:RR  Quote
01-29-2013 04:03 AM  7 years ago
Sidneyw

rrApprentice

Huntersville, NC

MyPosts All Forum Topic
The weather is so crazy.... got up to 46 degrees today. The rain got rid of all the snow overnight. Here is the x468 gimbal I got exactly one year ago, finally tied that to 450 using 10" props on 3S.

Watch at YouTube

SHARE  PM  EMAIL  GALLERY  Attn:RR  Quote
01-29-2013 10:51 PM  7 years ago
vsattec

rrNovice

Gloucester Point Va.

MyPosts All Forum Topic
4S
Here's my f550 on 4s 10x4.5GF (specs on youtube)

Watch at YouTube

SHARE  PM  EMAIL  GALLERY  Attn:RR  Quote
02-09-2013 04:22 AM  7 years ago
JamieD

rrApprentice

Salt Lake City UT

MyPosts All Forum Topic
8" or 10" blades
I am at 6500ft, should I be using the 10" blades with the 4s setup and go pro?
SHARE  PM  EMAIL  Attn:RR  Quote
02-09-2013 04:46 AM  7 years ago
R Hudson

rrKey Veteran

Denver, CO

MyPosts All Forum Topic
I would tend to say 10" at 6500'.Signature
SHARE  PM  EMAIL  Attn:RR  Quote
02-09-2013 05:21 AM  7 years ago
JamieD

rrApprentice

Salt Lake City UT

MyPosts All Forum Topic
10's are installed
test fly tomorrow if snow isnt too bad
SHARE  PM  EMAIL  Attn:RR  Quote
07-03-2013 01:13 AM  6 years ago
dcbinkowski

rrApprentice

Lombard, IL - USA

MyPosts All Forum Topic
9" props
As to the whole 10" vs. 8" blades with 4S argument, has anyone thought to try 9" blades with a x3.8 pitch? Maybe a compromise?
SHARE  PM  EMAIL  GALLERY  Attn:RR  Quote
07-03-2013 07:37 AM  6 years ago
rexxigpilot

rrProfessor

rexxig2@comcast.net

MyPosts All Forum Topic
Since DJI changed the pitch of their 10" props from 4.5 to 3.8, the 10" prop the better choice all around. No need to even include 8" props in the kit.

A 9" prop may be good for 4S and a heavy camera rig.
SHARE  PM  EMAIL  GALLERY  Attn:RR  Quote
01-13-2014 05:21 PM  6 years ago
sarguy

rrNovice

reno,nv

MyPosts All Forum Topic
Prop size for a D550 with 4s
Hi Guys,

Brand new multirotor flyer. I have a DJI F550 with Nava M-V2 and was wondering if a 9x5 CF prop will work with a 4S 6500 mAH battery? Also, what landing gear to use if I want to mount a Phanto 2-axis gimbal with a custom Sony camera module (1X11A) which weighs about 200 grams?

Also, what video transmitter/receiver should I use if I'm using the 2.4 GHz Futaba T8GS radio?

Lastly, any idea the flight time I might get with this set up? I will be flying very conservatively. I'm planning to use this for search and rescue operations in the Reno are.

Sorry for all the questions, but I'm literally brand new to the whole multirotor thing. Excited, but a little nervous.

Thank you.
SHARE  PM  EMAIL  Attn:RR  Quote
01-13-2014 09:28 PM  6 years ago
HansAuf

rrApprentice

Gainesville, Florida, USA

MyPosts All Forum Topic
SARGUY, you could probably start another thread but here goes.

Not sure on the props because I never liked the DJI stock motors. As far as landing gear to use with the gimbal. I would use the tall style and not the skid/bones type gear on the Hexa. That way you have another way to mount the battery in back and gimbal up front (maintain CG). So the ones like in the photo here work really good. I have built a few using this gear. You can get them several places but they are all pretty much the same. Hit eBay and search for "TAROT FPV Landing Gear F550". There are a couple different heights and minor style changes. Don't pay more than $40 for them. These are the gear that I would use for smaller gimbal camera setups..... Note that I said smaller because of the following.

The Sony I assume you are talking about is the FCB-IX11A 10x Block Camera? Not sure what the weight is with the casing also, but it ends up slightly more than 200g. I think it ends up slightly more than an NEX5N if I am not mistaken. If that's the case then your flight times with the DJI F550 on stock motors is going to be really low and the flight characteristics will be sluggish at best. Conservative or not, since you mentioned search and rescue I don't think this would really suit your purpose.

If I can make a suggestion. You may be getting ready to make the same mistake many of us already have and sink way too much time and money into something before you're sure of your actual direction. You're focused mainly on the end goal. So if I can offer a suggestion.... Go with the F550 that you already have. Get a GoPro 3 or 3+ (Black) if you don't already have one. Get a Tarot Gimbal (2 axis) and the landing gear that I mentioned above. Start with that and I guarantee you that you will look back and remember reading this and probably go "dayum I am glad that I read that".

Now, to ramp up the complexity on you a bit. You're FPV stuff. I've explained the similar technical detail and suggestions on what you are looking for and planning in some other posts.

Check out my post here, the 4th post on this thread regarding not flying from the gimbal cam and what's needed to get started.
"What is Needed to Complete My Setup"
https://rc.runryder.com/t745539p1/

Then read this thread. All of the thread does not apply to you, but some of it will. And it's better to be informed.
"Multi-purpose Hexa Recipe (Incl. Parts/FPV/Etc)"
https://rc.runryder.com/t709427p1/

Also check out "FPV Ground Station Recipes"
https://rc.runryder.com/t751769p1/

Hope some if any of this helps you out.

SHARE  PM  EMAIL  GALLERY  Attn:RR  Quote
01-13-2014 11:50 PM  6 years ago
sarguy

rrNovice

reno,nv

MyPosts All Forum Topic
Prop size for a D550 with 4s
HansAuf.

Thank you so much for the help. As I already own several of the Sony block cameras, and I like the 10x zoom feature, I will at least start with that. If I need to increase the flight time and power, what do you think of the aluminum arm replacements for the stock DJI arms and then going with a bigger set of motors, props, etc? Maybe I will need to look at that as option 2. I did order a Photoshipone landing gear set, unfortunately before I saw your reply. It is the $99 one and weighs in at 300 grams. It has the same characteristics as the one you mentioned with the gimbal out front and the battery offsetting the camera to the rear of the craft.

If I do go with the longer aluminum arms, can you suggest a good motor and prop size that might still work with the existing DJI 30A ESC's? I currently have the Pulse 4S, 6600 mAH batteries.

Thank you again.
SHARE  PM  EMAIL  Attn:RR  Quote
01-14-2014 01:20 AM  6 years ago
HansAuf

rrApprentice

Gainesville, Florida, USA

MyPosts All Forum Topic
Sure thing. Do you have a link for the arms?
SHARE  PM  EMAIL  GALLERY  Attn:RR  Quote
01-14-2014 03:30 PM  6 years ago
sarguy

rrNovice

reno,nv

MyPosts All Forum Topic
Aluminum Arms for DJI 450/550
Yes Sir.

http://www.readymaderc.com/store/in...roducts_id=1808

aimdroix arms from Ready Made RC.

Thanks.
SHARE  PM  EMAIL  Attn:RR  Quote
01-15-2014 01:34 AM  6 years ago
ErichF (RIP)

rrElite Veteran

Sutton, NH

MyPosts All Forum Topic
I was considering a set of those arms for my 550. In the end, I didn't see the added weight worth it. My bird has no issues, so why "fix" it? It flies great as is.

Now, if you were going to install the extended arms, install bigger motors, and maybe a 6S power system to haul around a Sony NEX camera or something, they would be great.
SHARE  PM  EMAIL  GALLERY  Attn:RR  Quote
01-15-2014 02:31 AM  6 years ago
R Hudson

rrKey Veteran

Denver, CO

MyPosts All Forum Topic
If you want a larger diameter for added lift I would consider these:

http://www.rctimer.com/index.php?gO...45&productname=
Signature
SHARE  PM  EMAIL  Attn:RR  Quote
01-15-2014 04:50 AM  6 years ago
HansAuf

rrApprentice

Gainesville, Florida, USA

MyPosts All Forum Topic
Sarguy, those are nice arms, I met the guy who designs and makes them. However, those arms are going to run you 150-ish for a set of six. Now I know you're already $$$ into that DJI F550, but have you considered using a different frame that's more suited to heavy lift? Also, the arms that R Hudson suggested are actually cool and work pretty well. But they have a lot of flex in them, which as you know leads to vibration transfer. So if you do use them make sure your props are always balanced dead on.

If you are set on staying with that frame and going for long flight times, use whatever arms suit you and shoot for something like the HP4108-580KV motors on 6S and 15" props. That would give a a nice flight time and lift your camera sufficiently. You can get those motors from RCtimer directly. Pair them with some 40A ZTW Spider series ESC's. You can pick them up from several places. I think Quantum Hobby stocks them but don't quote me on that. Those ESC's are opto/no built in BEC. Which is actually good, because I prefer NOT to use an internal BEC to power anything anyway. Just run any accessories off of a voltage regulator. I use Western Robotics reg's in anything I am proud of and Castle in the smaller stuff.

Motors:
HP4108-580KV Multicopter Brushless Motor
http://www.rctimer.com/product_881.html
2570 grams of thrust on a 6S lipo with APC 12x3.8 props.
SHARE  PM  EMAIL  GALLERY  Attn:RR  Quote
01-15-2014 07:55 PM  6 years ago
sarguy

rrNovice

reno,nv

MyPosts All Forum Topic
RCTimer
HansAuf,

Well, all your points make sense. I will learn to fly on the F550 and then maybe move up to the EVO F800. It looks like the next step. Any thoughts about the EVO? Thank you again.
SHARE  PM  EMAIL  Attn:RR  Quote
01-15-2014 08:07 PM  6 years ago
unclejane

rrElite Veteran

santa fe, NM, USA

MyPosts All Forum Topic
I have 2 S800's with the WKM + V2 IMU on both (no I'm not rich, I got both on the cheap, one was used). In GPS/atti or atti mode, it will fly very very close to your F550/Naza in GPS or GPS atti. The main difference is just way way more noise .

In manual mode, though, the S800 is harder to handle in forward flight. It tends to tuck and baloon at high speeds for reasons I haven't quite figure out (no problem in atti mode tho, just put the stick to the stop and let er go). Probably the dihedral in the arms - the F550 is more like a FBL helicopter in manual. OTOH, I think the S800 is slower and more stable in the hover (probably on purpose).

But once you get used to your F550, an S800 with a Wookong in it presents no problem at all.... And I assume the A2 also...

LS
SHARE  PM  EMAIL  Attn:RR  Quote
01-20-2014 03:40 PM  6 years ago
sarguy

rrNovice

reno,nv

MyPosts All Forum Topic
Questions on F550
I got the F550 off the ground yesterday. AUW is about 2.56 Kg. When I lift off, the craft goes up about 3 ft and then pitches back and rolls right about 20 degrees. After about 10 secs it seems to stabilize. Any ideas what I may have messed up. I check the balance and CG and everything seems correct. The gains are currently at 150, 150, 130, 130, 100, 100. I have the 4S 6600 Pulse battery and it is currently mounted near the rear of the top plate to get the CG correct.

Thank you.

John
SHARE  PM  EMAIL  Attn:RR  Quote
01-20-2014 08:05 PM  6 years ago
rexxigpilot

rrProfessor

rexxig2@comcast.net

MyPosts All Forum Topic
Please take some pics. of your setup. Having to mount the battery that far from the center tells me you have other equipment mounted away from the aircraft's center. This can cause control/stability issues as the polar moment of inertia is high. It is best to keep mass as close to the center as possible.
SHARE  PM  EMAIL  GALLERY  Attn:RR  Quote
WATCH
 4 pages [ <<    <     1      2     ( 3 )     4     NEXT    >> ] 16529 views POST REPLY
Home✈️AircraftMulti-Rotore-Multi-Rotor Main DiscussionDJI › Dji 550. 3s or 4s?
 Print TOPIC  Make Suggestion 

 17  Topic Subscribe

Wednesday, April 8 - 12:18 am - Copyright © 2000-2020 RunRyder   EMAILEnable Cookies

Login Here
 New Subscriptions 
 Buddies Online