Aluminum arms for dji flamewheel frames

[plasticjoe]

I know the stock arms flex considerably and I suspect that due to that fact, the rotor disc's changing attitude would cause a wider range of harmonic vibration to be transferred through the frame. ( wow that sounded really geeky lol ) But seriously... I think with the less flex, it would make vibration isolation much easier due to the smaller range that needs to be dampened. I would be really curious to know if my assumption on this is indeed true. I have a Sony HX9V that has been giving me fits "de-jelloing" and I think that this flexing is what has been causing my issues.

 

[Jareth_Atian]

I haven't had the opportunity to test the AIMDROIX arms on my F550 or F450 yet, but I have modified other multirotors to eliminate arm flex and twist; thus far, every single effort to reduce flexibility has led to better video quality and less 'jello'.

Has that not been your experience?

 

[plasticjoe]

yes it has been my experience as well. I am about an hour away from readymaderc.... I might drive over one Saturday morning and just take a look at them ( possibly pick up a set as well ) I know that metal tends to transfer harmonics ... but I am also considering hard urethane spacers between the center plate and the arms to dampen that part.

 

[HighGainTuning]

Props and motors should always be balanced especially if your doing video.
There should be no reason today to have any video vibration or "jello" with all the available isolators.

With that said, aluminum arms WILL bring motor and prop balance issues into the airframe more-so than the stock arms.
You can't have your cake and eat it too...

BTW: Still waiting for your reply Jareth.

 

[Jareth_Atian]

HighGainTuning wrote:

BTW: Still waiting for your reply Jareth.

Ok...you asked:

So if your not purchasing these for their BLING factor, what issues are you currently having that the aluminum is going to correct?

Arm flexing and twisting. Which was probably why I talked about arm flexing and twisting in my reply, above.

Please list the components in your build and it's weight.

Hokay...
DJI F550 frame and Naza-M v1 + GPS with V2 PMU + bluetooth adapter.
2216-11 KV900 motors
9x4.5" carbon fiber props
Hyperion 4S 5000mAh battery
AeroXCraft landing gear + brushless gimbal for GoProHERO3
LED lights on the arms
FatShark 250mAh video transmitter
Assorted BEC's so that I can run the gimbal and video transmitter off the main battery.

Total AUW, with batteries and camera attached: 2890g


My F450 is pretty much the DJI ARF kit, using 10" props, 3S 4200mAh batteries and fatshark FPVstuff installed.

Do you have a camera on your airframe and do you use it for video or FPV

I have cameras on all of my airframes. I only fly FPV using my F450...the F550 is always flown LoS with video transmission solely for the purpose of lining up camera shots.

 

[HighGainTuning]

Well, this will be a good comparison as our builds are nearly identical. Can you please post pics and video of before and after you install the aluminum arms?
I would like to see the difference they make as my airframe is a bit heavier.

DJI F550 3 tier frame

Bottom

2 Hyperion 4S 5000 35C Batteries or 2 Mad Dog 4S 5000 35C Batteries
Carbon Fiber dual battery tray
DJI H3-2D Zenmuse Gimbal
GoPro Hero3 Black
Carbon Fiber Landing Gear

Bottom tier

DJI Naza-M V2
DJI Naza-M V2 PMU
HiTec 9 channel receiver for Aurora 9 TX
DJI 2.4GHz ground station Transmitter
DJI 2212 920kv motors
DJI 8045 props
DJI arms
DJI 30 amp OPTO ESC's

Middle Tier

DJI iOSD Mark II
DJI 5.8GHz Downlink
DJI H3-2D Zenmuse GCU
DJI V2 LED

Top Tier

DJI V2 GPS
DJI 5.8GHz downlink antenna
Dual Diversity HiTec Antennas


Total AUW: 2920gr

 

[maxwelltub]

Can't wait for the co-ax adapters.....

 

[HighGainTuning]

Can't wait for the co-ax adapters.....

That's what caught my attention first. In the mean time I have been impatiently doing my own thing with great results.

View attachment 14579

View attachment 14580

 

[papatango]

Fun thread.

You have to give the OP credit, he's done a nice job of bringing some locally made gear- bling or otherwise, to market at a respectable price point for such a short production run.
Kudo's bud, I think they're sweet.

HGT, I'm loving the stacked hexa; based on a similar gear load on a stacked-style 450 X8, what kind of performance & flight times could I expect??

Cheers,

PT

 

[HighGainTuning]

HGT, I'm loving the stacked hexa; based on a similar gear load on a stacked-style 450 X8, what kind of performance & flight times could I expect??

Cheers,

PT

I don't have a stacked hex... nothing to control 12 motors with. Just a couple X8's
Performance of the DJI X8 configs is the smoothest there is. Much better than any hex.
Power is unbelievable. Flight times unloaded are just slightly lower than with 4 motors.

 

[papatango]

I don't have a stacked hex... nothing to control 12 motors with. Just a couple X8's
Performance of the DJI X8 configs is the smoothest there is. Much better than any hex.
Power is unbelievable. Flight times unloaded are just slightly lower than with 4 motors.

Sorry, I'll clarify. I'm looking to build a smaller rig for travel & playtime. Winds are an issue for me as well.

I like the stacked chassis on your hex, and the performance of your X8 450.

That said, a 450 based X8, with a "stacked" chassis, should provide enough room for the same gear load as the hex. (2batts + full DJI setup and H3-2d).

The question is, in that configuration(X8 with a hex load out), what performance can I expect, specifically duration with mild flying?

Thoughts??

Edit.... its a total thread hijack, but I'll be ordering the arms, so call it a commissioned hijack!!!....

 

[HighGainTuning]

My bad...

Something like this then.

My F450 X8 is currently stacked as I have been wanting to add my FPV gear back on.
As seen here it does just at 10 minutes with a 4S 5000 35C Hyperion or Mad Dog battery
2 4S 5000's supply up to 15 minutes of flight time and it lifts that easily.

 

[papatango]

Great build HGT. Thanks for the pics, too; needs it's own X8 rebuild thread.

Bump for the OP's original arm thread.

 

[Maymidroix]

Can't wait for the co-ax adapters.....

View attachment 14616
They are on their way......... They should be available next week.

 

[maxwelltub]

Hell ya

 

[HighGainTuning]

View attachment 18338
They are on their way......... They should be available next week.

On their way from where? With all due respect, the only place I have found that packages each item in plastic like that is the Chinese... :culpability:

What's the cost going to be?

 

[bisenberger]

Any information on when the optional X8 motor mounts will become available?

 

[maxwelltub]

They are up now. Just picked some up.

 

[bisenberger]

Thanks maxwelltub! ordered.

AIMDROIX Dual Motor Adapter (Coax)

 

[Maymidroix]

ALUMINUM ARMS for frames using DJI Style arms. (TBS DISCOVERY, NEX Quad)

Hi everyone,

I'm Michael, the designer of the AIMDROIX Aluminum arms. I wanted to share a few pictures of the arms of some customers.

TBS Disco:
View attachment 14753View attachment 14754View attachment 14755View attachment 14756

DJI Hexa:
View attachment 14757View attachment 14758View attachment 14759


Recently I released some accessories for the arms. You can choose using aluminium legs of the same height as the dji stock arm or the coax motor mounts:
View attachment 14760View attachment 14761

View attachment 14762


It has been a lot of work during the last 3 months, but finally all my products and are available at Ready Made RC. http://www.readymaderc.com/store/index.php?main_page=index&cPath=165_295

You can find some videos in youtube. http://www.youtube.com/results?search_query=aimdroix&sm=3

Please like my facebook page. https://www.facebook.com/aimdroix

Feel free to ask me any questions.