Hexa Tarot FY680 with custom retractable landing gear

Hi DIY guys, I would like to show you my almost finished Tarot FY680 setup.

 

I saw different approaches for ESC mounting. I choose bottom because a couple of reasons:

1-My motors wires were long enough to reach central frame, they came with 3.5mm male gold connectors.
2-I like ESC free arms, and I don't think hot dissipation will be an issue for this setup. 

So the frame remains being foldable even with ESC out of the arms. 

I decided not to use standard payload bars to fix my ASP Brushless Gimbal. Instead I 3D printed 4 plastic adapters to fix gimbal using M3 screws and Tarot originals plate holes.

 

Flight controller mount was more easier I printed out a case from Thingiverse.com APM 2.5 Case. I just made some changes to fit horizontal pin out. 

Landing gear was a more complicated. I took 2 standard electric landing gears for planes and replace the rotary plastic piece for a custom 3D printed. Also I printed out a wrapper in order to fix the leg to the fixed middle arm. 

The leg is wrapped by another 3D printed part which is the weakest part of the assembly so I'm working in different way to handle the leg without exposing an-isotropic weaknesses of ABS FDM printed parts. 

System looks weak for rude landings, but It handles vertical hard landings easily. I didn't try yet landings with horizontal velocity or over irregular ground, and I wont. It works well considering it only cost $ 70 while a prof. solution can cost more than $ 800. Now I'm waiting for a new 3-axis gimbal.

Some tests here:

GPS and radio goes to a pretty case which I made my self. You can get it from http://www.thingiverse.com/thing:148552

This case was meant to hold CRIUS GPS module not a 3DR GPS. If you have a 3DR take a look to this one http://www.thingiverse.com/thing:91847.

Resume: 

Motors HP2814 - 810kv

Props Carbon fiber 13x6.5

APM 2.5

ESC 30A

CRIUS GPS v2

3DR 433Mhz radio.

Views: 19811

Comment by eduardo on September 11, 2013 at 2:50pm

Very well done landing gear.

BTW, way you need retractable landing gear if your gimbal not have PAN ?

Comment by robert mcintosh on September 11, 2013 at 3:29pm
Very nice landing gear solution. What servos/standard electic landing gear are those?
Comment by Alejandro Martin Pirola on September 11, 2013 at 5:20pm

Eduardo, I said I'm waiting a 3-axis gimbal.

Robert, the retractable landing gear: http://www.aliexpress.com/item/Servoless-Retractable-Landing-Gear-P...

The landing gear spquid:  http://www.aliexpress.com/item/Tarot-Aircraft-Landing-Skid-Carbon-F...

This is the my custom part for it:

I ordered a bigger pair of servoless retractable landing gear for testing purposes.

Comment by eduardo on September 11, 2013 at 5:24pm

Aaaa, OK.

I have one of this airframe.

I like it very much.

I put new arm tubes to use 15" props and it work very well.

Comment by Eric on September 11, 2013 at 6:21pm

Nice landing gear hack.

Any idea how much power the retract servos consume during flight (i.e., when the legs are up)?

Would you be willing to share the CAD files for those parts?

Comment by Rob_Lefebvre on September 11, 2013 at 8:08pm

I believe the retracts are worm drive, so if they don't actually lock up (and I bet they do), then they still wouldn't require much power.

I really like these Tarot frames.  Great value for money. 

Comment by robert mcintosh on September 11, 2013 at 8:11pm

Thanks so much.  I'd be interested in trying to print these parts on my solidoodle as well.  are the files available anywhere?

Comment by Eric T on September 11, 2013 at 8:23pm

Great job on the retracts!  I have been looking for an example of someone doing this, as the commercially available ones for the S800 or others are ridiculously overpriced!  Now all I need to do is order a 3d printer!! :)  

Thanks for posting!

-Eric

Comment by robert mcintosh on October 28, 2013 at 9:43am
+1
Comment by PaulTarotf680 on December 4, 2013 at 5:35pm

Hi ! Really nice Landing gear 

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