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Old May 02, 2012, 04:41 AM
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Question
Carbon fiber frame for quadrocopter

Hi,
I would like to upgrade my current DIY quadrocopter with DJI Naza and go into carbon fiber frame due to weight.

I have two candidates but I would like to hear some opinions, recommendations or offers (I am interested to buy one, can be used in good condition).

Candidate #1: xAricraft X650
http://www.goodluckbuy.com/xaircraft...otography.html

It looks good, there is a lot of spare parts available, it is foldable. The GLB website says the empty frame weight is 720g, which does seem to be a mistake, I think empty frame should not be more than 400 g. If it is really 720 g, then it goes out of my list.

Candidate #2: Carbon SCARAB Quad
http://www.multiwiicopter.com/produc...-core-multiwii

It looks cool and lightweight, not sure if there is enough space for FPV gear and the price is a bit steep....

Do you have experiences with these? Do you recommend other carbon fibre frames? (I mean for around $300 maximum)> I know HobbyKing now supplies quite cheap one. I like it but I also need high landing gear due to camera mount and dome would be good. HK frame looks like sporty one, I need one for AV and FPV.

Thanks!
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Old May 02, 2012, 06:11 AM
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xAricraft X650 is one of my fav frame but the price is a bit steep, i bought ATG L600-X4 carbon frame from omgfly.com which is much more cheaper then xAricraft X650



http://www.omgfly.com/index.php?main...roducts_id=380
or
http://www.rctimer.com/index.php?gOo...wt&goodsid=652
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Old May 02, 2012, 06:24 AM
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Wow, thanks, looks similar but way lot cheaper!

I was considering this one too for $170, weight 380 grams
XAircraft DIY X4/X8 CF Carbon Fiber Frame for Quadcopter
http://www.goodluckbuy.com/xaircraft...er-flight.html

but arms look like they could be flexible just like DJI Flamewheel arms...
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Old May 02, 2012, 06:32 AM
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So you say ATG L600-X4 is good? What is the weight of empty frame?

Hmmmm..... I could buy two to have a set of spares... and still be a lot lower than X650... sweet
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Old May 02, 2012, 06:46 AM
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well currently im using xAricraft frame, yes it is flexible but not as flexible as DJI frame, the material used is thicker then DJI thus the xAricraft frame is a bit heavier then DJI, u need to use a bit of force to flex the frame



i bought the xAricraft hexa frame and xAricraft quad plates so that i can switch from quad to hexa if i want, saved me a lot of money on that

http://www.goodluckbuy.com/xaircraft...er-flight.html
http://www.goodluckbuy.com/xaircraft...ss-fiber-.html
http://www.goodluckbuy.com/xaircraft...ss-fiber-.html
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Old May 02, 2012, 06:52 AM
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i bought the ATG L600-X4 last thursday and still waiting for the parcel to arrive... if im not mistaken the xAircraft x650 arm diameter is 15mm whereby the ATG L600-X4 arm is 12mm diameter
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Old May 02, 2012, 08:27 AM
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Ok, when it arrives, can you give some update here? What's its actual empty weight and your overall impression about this frame. ATG L600-X4 definitely does not look as fancy as X650 but price difference is pretty big.

I wonder if the dome from X650 fits to L600?
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Old May 17, 2012, 09:23 AM
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What would be really nice is a x aircraft hexa frame (rm 650 hexa)
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Old May 17, 2012, 09:32 AM
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I finally decided to get carbon fiber hexa from OMGFLY
http://www.omgfly.com/index.php?main...uou1gp4stsg6k7

For $79 + shipping this is unbeatable and has quite good references. Landing gear is crap but that does not bother me too much. Still waaaay cheaper than quad frame xAircraft X650 V2, which I like the most ($229).
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Old May 17, 2012, 01:03 PM
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honestly carbon fiber is over rated as a building material for multirotors..

that being said.... i own 3

I have 2 of the OMGfly frames both CF

when you have thin CF it is not stiff enough.... G10 is cheaper and generally as effective.

the OMGFly frame are okay quality. Nothing amazing... but they will get the job done for lighter rigs.

I also have a RC-carbon (carbon core is similar) Y-6 and it is super thick sandwiched CF and it is really stiff and strong.

But when you crash CF is breaks...

Rsuty's Frames @ http://www.shop.aglhobbiesllc.com/ are better frames and are made of G10 that WILL NOT BREAK.

I have crashed full throttle from 100' right into asphalt and I destroyed everything..... but the G10 motor mount, delrin boom block and center plates were fine... no damage at all.

I crashed my RC-Carbon Y-6 from 10' over dirt and grass and chipped the end of the CF arm
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Old May 17, 2012, 01:27 PM
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I decided for CF because of weight, it's lighter than glass fiber. I am aware that when I crash something gets broken. But this is for my amateur AV/FPV craft with Naza and I do not crash it, I fly it easy. I will build another quad then for fun flying.

Another reason I wanted to try CF frame is because it is said that it absorbs vibrations pretty well.

I do not expect OMGFLY frame is high end but for my purpose it is ideal because even though it is not as strong as other CF frames but it is light and that is important for me.

Hey, I learned to fly copters with a quad build with HK frame V1 that is sooooo weak and fragile, and still it flew great although it was very easy to break it. But if I did not crash it then it flew great, it was so light.
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Old May 17, 2012, 01:37 PM
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I'm leaning towards being light to save weight, so carbon fiber is best.
I 'll be using my rig for AP, no fancy stuff.

Are all of you using multirotors for A.P. ?
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Old May 17, 2012, 02:08 PM
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Probably it is because it is good (the best) platform for AP and FPV. I am flying planes too but I like multirotors for their mechanical simplicity comparing to helicopters and ability to fly and to hover, which isn't possible with an airplane. Also, current controllers with auto level and other features help to do FPV flying safer and just enjoy it.
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Old May 18, 2012, 08:24 AM
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The hexa frame from : http://www.rctimer.com/index.php?gOo...wt&goodsid=652 is about 160 grams that very light compare to the ones from goodluckbuy.

What is the weight of the omgfly quad and hexa frames ?
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Old May 18, 2012, 08:40 AM
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That RCTimer frame is for quadrotor and it is a copy of xAircraft. OMGFLY only has weight listed for Carbon Fiber Hexa ATG700-AL which is 550 g. But that is 700 mm with aluminium arms, so I guess 600 mm with CF arms would be a bit lighter.

RCTimer only sells DJI copies hexa frames which weigh like 480 g excluding landing gear, which I find heavy and also I do not want plastic arms. Add high landing gear (because of camera mount) and you are well around 600 grams for hexa.
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