Another tricopter yaw mechanism

[Burg]

I was noticing many tricopter yaw mechanisms lately based on a helicopter main rotor grip. Made me wonder how I could make one myself without a lot of cutting and gluing. This is what I came up with and I want to share it with you because it works really well. Let me know what you think ! I used the following parts :

El cheapo 10x10mm pine wood stick

Motor :
http://www.rctimer.com/index.php?gOo=goods_details.dwt&goodsid=549&productname=
Any 28xx size between 700kv and 1000kv will do
Plus one extra motor mount

Main rotor grip :
http://www.hobbyking.com/hobbyking/store/uh_viewItem.asp?idProduct=10129
Both the motor mounts fit PERFECTLY over the upper and lower 'spacers' on the blade grip (!)
The shaft requires a 6mm drill

Servo :
http://www.hobbyking.com/hobbyking/store/uh_viewItem.asp?idproduct=9814
or
http://www.hobbyking.com/hobbyking/store/__9815__Hitec_HS_81_Micro_Servo_2_6kg_16g_0_11sec. html
Servo can be installed better, this was just a test fit..

Servo arm :
http://www.hobbyking.com/hobbyking/store/uh_viewItem.asp?idProduct=17514
Very solid and a perfect for to the Hitec servo's
Thread for the ball links is M3

Ball links :
http://www.hobbyking.com/hobbyking/store/uh_viewItem.asp?idProduct=10164
http://www.hobbyking.com/hobbyking/store/uh_viewItem.asp?idproduct=12301

Screws, nuts and zip ties :
http://www.hobbyking.com/hobbyking/store/uh_viewItem.asp?idProduct=12316
http://www.hobbyking.com/hobbyking/store/uh_viewItem.asp?idProduct=6368
http://www.hobbyking.com/hobbyking/store/uh_viewItem.asp?idProduct=17570

 

[UndCon]

that one is just like mine

 

[Burg]

@UndCon:
Can you show me what you made?

 

[UndCon]

Sure

A 450 blade holder mounted with brass bushings into a 10*10mm aluminum profile.
Motor mounts directly to a 3mm aluminum sheet and a spacer was made from wood to get a snug fit.

 

[Burg]

Nice UndCon, such version is most common I guess.
In the first pics above I used a larger 500 size blade grip.
I have a 450 as well and this is what I could make of it:

Same 10x10 pine wood stick
4mm ply wood (fits perfectly, could make it more round etc)

450 blage grip :
http://www.hobbyking.com/hobbyking/store/uh_viewItem.asp?idProduct=11469

2836 brushless motor 880kv:
http://www.rctimer.com/index.php?gOo=goods_details.dwt&goodsid=522&productname=

I want to glue a longer stick underneath (extension) in order to protect the yaw system during hard landings.

 

[Toby Carleton]

good job! i made mine a bit differently im gonna make a video explaining it and hopefully it can help poeple and i get get some feed back on making it better

 

[Burg]

Looking forward to that vid Tobster !

I like David's V2.5 solutions as well.
We have build one of those in our club last week with a Hitec HS-82MG and the result is ok

We'll have to see what will be the best solution.
But I think they will all do the job fine ..

 

[r2pardjo]

share my yaw system

hy all
this is my yaw system...
iam using lazer cut acrilic 3mm

 

[ananas1301]

Wooah!

That looks awesome and much more elegant then anything I´ve seen before!

You should start selling them !!!

 

[colorex]

Wooah!

That looks awesome and much more elegant then anything I´ve seen before!

You should start selling them !!!

They would indeed be bought by many if they are strong enough.

 

[Burg]

hy all
this is my yaw system...
iam using lazer cut acrilic 3mm

WOW .. how pretty !
Would like to try one of these.
How is the strenth of the servo connection ?
Did you use CA / Epoxy / mechanical ?

 

[r2pardjo]

i use this servo
http://www.hobbyking.com/hobbyking/...90S_Metal_Gear_Servo_1_8kg_13_4g_0_10sec.html

i thing that strong enough because i use 3mm but i will try it...
i dont brave enough to sell it..
i upload its movement in youtube...this my video on youtube :
http://www.youtube.com/watch?v=2Tb0E8zuHMI&feature=g-upl&context=G2a5061fAUAAAAAAAAAA

 

[r2pardjo]

@ burg : yes i use CA / Epoxy so far, but if its not strong enough i will design again more solid with new connection system, i will upload my frame design for tri and quad...

 

[Burg]

Very nice to see it in action on YT (I subbed). Can you show us the center section as well or a pic from the complete tricopter ? 3mm should be strong enough I guess. If you intend to laser-cut another set, I'd be happy to take one (depending on whet you ask for it off course). I see a ultra light mid size tri in my mind ;-)

 

[r2pardjo]

oke burg, i will upload asap including my quad design frame..the tri frame already finish but i must go to another town so i will take pictures of it when i back...
my tri frame design have diameter 40 cm from the center of frame to each motor..i agree with your opinion...
at this time i plan to build a quad and the diameter frame was 30 cm from center to motor..
this my quad frame picture

i use the same motor mount that can be use in quad / tri except the yaw

 

[colorex]

Awesome!

 

[UndCon]

I know laser cutting acryl is not easy but my question is are you not afraid it gets brittle?

Very rarely I land smooth -I think I would break such frame in an instant, based on the kind of acryl I have here it is very brittle and cracks easily...(only 3mm)

//UndCon

 

[r2pardjo]

@ UndCon : thanks for your information..i don't know. i will try it first but i already design the rotor and propeller guard / protection during i learn flying smoothly..by using some light weight steel wire to prevent the damage of frame and propeller