This hexacopter offering from Tarot has a great sturdy, lightweight design, which has the added benefit of being foldable.
The 680, or 650, also offers a great alternative/upgrade from the DJI Phantom, see DJI Phantom Frame swap for Tarot 650.
- MR.RC.FY680 Foldable Hexa-copter Carbon Fiber Frame Brand New, £63.79 (No landing gear!)
- Aluminium: Tarot FY680 FPV Hexacopter Aircraft TL68B02 Folding Aluminum Tube Drone, £66
- Glass Fiber: Tarot FY680 FPV Hexacopter Aircraft TL68B02 Folding Glass Fiber Tube Hexacopter, £64 + £2.50
- Carbon Fiber: 680mm Multicopter Carbon Fiber Frame for Tarot Hexacopter FPV Aircraft TL6801, £79
- Pro version, TAROT 680PRO Folding type carbon metal HEXA COPTER main frame Kit – TL68P00, £88 + £2.50. Integrated PCB
- Pro, Tarot FY680PRO HexaCopter Folding Frame 3K Carbon (KIT), £84 +£3.90
- Pro with cover, Tarot FY680PRO HexaCopter Folding Frame 3K Carbon (KIT), £101 +£3.90
- Carbon Fiber FY680 Foldable Hex-copter Main Plate TL68B03 for Multi Hexa copter, £14.99, or cheaper still, Carbon Fiber FY680 Foldable Main Plate TL68B03 for Multi Hexa copter, £14.75
- Tarot TL65B04 Carbon Fiber Upper & Lower Cover Center Board Set For FY680 FY650, £15.28
- Tarot FY680 Hexa copter part 3K Carbon battery & center board TL68B06, £6.44
- Tarot FY680 650 680 M10 Metal Damper Rubber Mount Kit TL68B10 for 10mm pipe tube, $4.32
- Tarot TL68B14 Inverted Battery Mounting Plate Set for Multi Hexa copter FY680 RC £4.82 (includes battery plate and dampers)
One of the most important build issues on a multirotor is reducing vibrations. The motors and props make a lot of vibrations and the flight controller does not like this. The flight controller has a number of sensors that are vibration sensitive. So if you want your multirotor to fly smoothly and loiter accurately you need to get those vibrations down. The problem is that the flight controller sensors need to be firmly attached to the multirotor to sense the movements. So you have a problem, you need to dampen the vibrations from the motors yet you don’t want the sensors to get too isolated, using too soft a spongy foam/gel, from what the frame is doing.
That is why a lot of people spend so much time balancing motors and props to reduce vibration at the source.
Another way is to use anti-vibration motor mounts. I bought a set of Tarot TL68B33 (black) and TL68B34(red) to test on my Tarot 650 Sport quad and see if they would really be any help. They isolate the motor vibrations from the arm by adding a little rubber bumper between a motor plate and the motor mount. It did not look like it would do much.
But much to my surprise the reduction in vibrations is quite significant. Vibrations on an APM flight controller are considered acceptable if you can reduce the x-axis and y-axis vibrations to below +-3 units and keep the z-axs to -5 to -15 units. It is not easy to get your vibrations to this low level. I ended up using the RCTimer anti-vibration flight controller mount to get my vibrations down to the maximum.
Then I added the Tarot anti-vibration mounts and the vibrations dropped to +- 1 and -9 to -12. These are really low vibrations and definitely help the quad fly better.
There are a couple of downsides in my opinion. In a crash the cnc aluminum TL68B33 mounts can bend and break easily. I have no way of comparing them to the plastic motor mounts but the plastic seem able to take more punishment. The metal anti-vibration mounts are expensive compared to the plastic ones. The TL68B33 don’t grip the 16mm arms as tightly as the plastic Tarot mounts.
Keeping the vibrations under control is important enought to me to live with the downsides.
- Tarot TL68B22 Dia 10mm FY680 3K 280mm carbon fiber tube for hexa copter E, £1.98
- 4pcs Tarot TL68B22 Dia 10mm FY680 3K 280mm carbon fiber tube for hexa copter S, £6.59
Bar end bungs
- SUNNYSKY V3508 580KV Motor for Multi-rotor DJI Phantom RC Drone Aircraft copter, £22.69
- Tarot TL68P02 2-4S 4006 620KV 4MM Brushless Motor For Multicopter TL68P00 680PRO, £16.19
- F07287 Tarot 1355 1355R Prop Propeller CW / CCW TL2829 Black for Multicopter, £12.97
An interesting video
One year on
The ESCs should be mounted under the motors, in the motor mount housing
If I could order a different setup, I would have gone for the longer arms and 15″ props. I would have gone for the 5308-580kv SS motors. Which will give the same thrust but uses only 3.1A, not the 4.2 amps i will be using!
Regarding props – there is a current discussion at “Tarot 690S Build Log” (which I have contributed in the past) talking about props. I’m using the 580kv motors and 13×5.5 props. I’m using Foxtech and RCTimer CF props. For the 700kv motor it appears that the 11″ or 12″ get the longest flight times, due to the higher kv value – the faster the motors spin the smaller the prop you will want to use. I tend to rely more on actual field test accounts from other pilots verses spec charts (ie. import as reference only). Which ever prop you use make sure you check the heat of the motor or ESC after a flight. If the either feels hot (not warm) to the touch, then you are either using too large or too small of a prop.
Also these adapters are the best little invention I’ve seen it quite a while “http://www.foxtechfpv.com/propeller-quick-detach-cwccw-p-1303.html“. They allow you to easily and quickly mount props and also try different sizes of props. I’ve been using them since they came out last year and highly recommend them.
Do the ESCs burnout, if they are placed under the motors, as intended by Tarot, en lieu of being placed in the center plate? From page 4:
I’ve read you will burn up your ESCs faster by having longer battery wire length.
From page 5 (note that the motors used are 3508, not 5308 as above):
I also am looking to build a 680 Pro w/o extending the arms and using a SS v3508 580 KV motor. Max prop size is 13″, but I’ve seen people say to go 1″ above manufacturer’s suggestion.