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Dec 28, 2013, 03:28 PM
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Build Log

FY680 Hybrid PRO


Hi!

Tired of waiting for the FY680PRO or FY685PRO that was promised since mid September, I decided to go for a FY680 with all the PRO parts available. All parts arrived from China later in December. I am now building the FY680 Hybrid PRO.

To start with, this is the parts I bought separately

Tarot 680PRO folding six-axis center plate group TL68P01
Tarot 685PRO folding tripod seat / black TL68B24
Tarot Diameter16MM Clamping motor fixing seat /Black TL68B25
Tarot Diameter16MM Clamping motor fixing seat / red TL68B26

This is certainly not a good deal... it's way more expensive than the "promised" FY680PRO. But now it stands in my cellar ready to be built!
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Dec 28, 2013, 03:36 PM
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FY680 Hybrid PRO - cont.


As usual with our Chinese friends, there was no mounting explanations in the box. I soon realised it would not really matter since I was going to make a new hybrid model.

The new central plate has a PCB built in. Soldering the wires to it went smoothly although I started with too short wires. 50 cm wires is what I finally used. Note that I intend to put the ESCs at the extremity of the wheel.
Dec 28, 2013, 03:45 PM
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FY680 Hybrid PRO - cont.


I went on too quickly to mount the folding tripod seats. They need to be fixed with 2 screws on the beneath center plate, before screwing the beneath center plat to the upper center plate (the one with the PCB).

That been done, fixing the upper plate with the under one was quite cumbersome.
Dec 28, 2013, 03:56 PM
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FY680 Hybrid PRO - cont.


I still have a problem with the battery plate. It can't be fixed on the new center plate. I guess I will have to place it underneath.

Anyway, this is how it looks like now.

Note that from motor axis to motor axis, it is now 810 mm! that's 130 mm longer than the 680. Enough to fit 15 props...

I chose to take longer tubes for the tripod. I had some problems with a F550 doing flips on the ground with too small feet. Not too sure if i will not shorten those though.

Next to come is the electronics, motors and props. The current weight of the frame is 935g.
Dec 28, 2013, 04:19 PM
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Subscribed I just ordered a 680Pro, looking forward to seeing your results. What electronics do you have in mind?
Dec 29, 2013, 03:19 AM
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I have a modified DJI F550 with arm extensions. I will reuse the stuff I had on it. That is:
FC : DJI Naza V2 + GPS
ESC : Opto 30 A
Motors : Tiger Motor 2814 kv 710
Props : APC 1238

With this configuration I could lift 4.3 kg (AWU) with 2 5000mah batteries.

My only prob now is that the new frame is 935g compared to 690g for the upped F550.
Jan 01, 2014, 09:55 AM
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Next, mounting the motors and the ESC. First I realised that the carbon plates in the motor mounts did not properly fit my motors. I had to drill two holes on each plate. I took the fitting aluminium plate to secure that the holes would be at the proper place. The result is fine.
Jan 01, 2014, 10:03 AM
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Engines are now screwed to the carbon plate.
First, the ESCs control cable need to be inserted through the plastic holder. The ESCs are then fixed under the holder.
The cables of the motors need to be long enough to be connected on the tip of the arm.

That been done for all motors, the center plate is clean and tidy!
Jan 01, 2014, 10:10 AM
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I thought that the Naza FC would fit in the hole left in the center plate. Unfortunately not... there are too many cables and stuff. Even with the ESCs at the tip of the arms.
So I took the smaller plate from the FY680 and drilled new holes on the bottom center plate to put the FC on top and the PMU under.
With all cables connected it leaves a lot of place on the center plate.

The Futaba receiver is placed in front of the center plate, with all channels easily available.

The LED and the BTU (and iOSD) are fixed on the legs of the hexa.
Jan 01, 2014, 10:14 AM
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and this is the final result, with props.
I made he maiden flight this afternoon with no probs whatsoever. Very light and stiff.

Tomorrow I will put the gimbal and the FPV.
Jan 01, 2014, 11:44 AM
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Curious to see flight times at 4.3K turning 710KV motors.
Jan 01, 2014, 12:04 PM
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@OP: can I order the 680 Pro kit (to get all the 680Pro goodies), with 6 x standard FY680 booms (which are longer than the stock 680Pro booms from what you say) --> http://www.foxtechfpv.com/dia-16mm-3...mm-p-1154.html

Then this should be the same setup as your 680 hybrid Pro above? Which will give me the larger clearance for mounting 15" props?

Any input @RDT?

Thanks
Jan 01, 2014, 12:29 PM
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Quote:
Originally Posted by RDTague
Curious to see flight times at 4.3K turning 710KV motors.
On my F550 ext. I had about 10 mn with 2 batteries of 6000mah, with a good 5000 mah, between 5 and 6 mn.

I am now thinking of changing the motors and props. Any recommendations? I'd like to keep my 4S batteries.

Thanks
Jan 01, 2014, 12:39 PM
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Quote:
Originally Posted by ariZedA
@OP: can I order the 680 Pro kit (to get all the 680Pro goodies), with 6 x standard FY680 booms (which are longer than the stock 680Pro booms from what you say) --> http://www.foxtechfpv.com/dia-16mm-3...mm-p-1154.html

Then this should be the same setup as your 680 hybrid Pro above? Which will give me the larger clearance for mounting 15" props?

Any input @RDT?

Thanks
That's correct. It should work fine. Except that you need 4 320mm booms and 2 333mm booms. The two fixed booms are a bit longer than the four others.
http://www.foxtechfpv.com/dia-16mm-3...3mm-p-815.html

good luck. What motors will you be using?
Jan 01, 2014, 01:00 PM
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FY680 Hybrid PRO


Quote:
Originally Posted by fanch72
That's correct. It should work fine. Except that you need 4 320mm booms and 2 333mm booms. The two fixed booms are a bit longer than the four others.

http://www.foxtechfpv.com/dia-16mm-3...3mm-p-815.html

good luck. What motors will you be using?

Thanks a lot! I'm stuck between the sunny sky 3508-580 (more efficient) and the 3508-700's (more thrust)..

But if you say I can definitely mount 15" props with the above setup then I'll go with the 580's (once they're in stock again).

My AUW will be from 2.8- 3.4KG or so.


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