Finally, off the ground so to speak! Another Tri build!

[Nygie]

The HK order arrived today so I set to work straight away on the router table and made the frames as per RCExplorer 2.5 build with a little addition I spotted on the delrin kit.... the extra nut and bolt that would stop the are folding back if the arm should come loose.
Got the wood chopped, plenty of it  ;)
Notice extra motors and an ESC, just in case!

I think I am going to try the LARGE cable tie as the  landing foot as someone else on here has, in theory its a good idea :D

Onward and upward!

[Badlands]

The folding back arms makes this tri very crash resistant.
If you add locking bolts you will loose this feature.

I use locking nuts on the 'hinge bolt' & make them super tight, ive never had an arm fold on me.


gl with the build - bet you cant wait eh?

[Nygie]

I wish I could have tomorrow off work  ;D
Yeah I see the point about the arms.

[Nygie]

Ah ha, I come up with an idea.
Instead of the bolt I could use a semi rigid peg something that will give in an impact and brace if the worst happened and the arm loosened.
Maybe balsa?
Just a thought.

[Dizzy]

Nygie  i like your idea i may do that mod myself on the bigger tri thanks :D

hard balsa dowl sounds about right  ;)

dizzy

[phibin]

nylon bolts...?
like you used on glow balsa plane wings?
they are meant to shear under stress...

Maybe balsa?

[Nygie]

A little progress with a few pics.

Got the motors on and  leccy stuff rough fit.


Sits nicely on the cable tie suspension, idea totally stolen off someone else!


Used the packing foam to make a mount for the HK V3 board.


Little close up on the tail, as per Tri 2.5 instructions.


Builds going reasonably well.
Things left to do.....
Get a prop balance and balance the props.
Mount the receiver when the 9X arrives.... if it comes with one. I'll have to check.

Test fly (hop)

[Coyote]

Looking god Nygie, she looks quite a size :)

[Nygie]

Yeah, the arms are 50cm, some plans said 50 some 48.

Time will tell if the holds up :o

[BlueFlyer]

Ah ha, I come up with an idea.
Instead of the bolt I could use a semi rigid peg something that will give in an impact and brace if the worst happened and the arm loosened.
Maybe balsa?
Just a thought.

bbq skewer?

[Nygie]

Stainless or bamboo :laugh:
Maybe will have to do some strength testing.

[BlueFlyer]

thinking a bamboo skewer cut to length, with a blob of hot glue on top/bottom to keep it in during normal operation, but with the ability to "fail" on hard landings

[dirtyharry]

I find the legs stay put on my tri and there's no need for a locking mechanism.

But you could put 2 pins in the front legs and stretch an elastic band between them , will stop any chance of them slipping out of place and still allow them to fold in a crash without having to replace any kind of "fuse" bolt. Would actually be handy for when your transporting it to keep everything together.

[Nygie]

some good ideas guys. I like the elastic band idea.

[g.collins]

I like your cable tie legs, great idea.
;) G