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Tricopter Build jbkappirossi


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#1 jbkappirossi

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Posted 21 October 2011 - 08:26 AM

Well, to start at the beginning. I was randomly surfing on the web a few weeks ago and stumbled across a Forum Topic named; HK450 for 35dollar. Me WTF that's cheap? So you quese, Yup... I bought one. But the damn thing was helt by customs and still no HK-450.

The thing is i've never flown anything what soever. Well, a plastic fixed pitch 30dollar toy, what you can't call a copter, because ist uncontrollably cheap. So chances are great that when the first time I let the copter take-off in the air that it wil fal down ''like a apple from the tree''. So when i was looking around on the dutch forum my eye spot the word ''Multirotor''. Me; Huhhh??... thats interesting; flying with no hands. I like that even more than the apple thought :P .

So i began searching on what i needed (because i wanted to build my own multicopter of course) at parts.
I already had find Hobbyking, because of my already orderd HK-450 pro.
I looked at what they had and made my coiche to take carbon fiber 300x100mm sheet As beginning point and make a frame out of it.

Here are the parts i orderd already;

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Again, this is my first so i have orderd what i thought was best (not knowing anything about motors and esc's combinations).
So yes, probable need some other and better parts later, but for now i'am trying to make a tricopter out of this parts.

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And special thanks to Dave for providing CC :lol:

Wel, now for me the hard part is design a frame. Only program i have design't with is Paint....haha.
So that had to change, i just only had to find out what or witch program i needed and illegaly download it somewhere.....sssssst. The hard part for me is educating myself with it so I could actually draw some 3d. oh boy... was that gonna get a mes, but i had to, because I already ordered half of the parst with my dom as before even knowing what i was making realy. So i made up my mind and choose a Tri-copter to build, mainly because what i thought; les motor, les esc = les buck. Wel, also found a 3d moddeling program, Google skechup had to be it. I thought to my self; what am i getting myself into, not knowing anything about any copter and 3d moddeling program. Wel actualy after two days of fighting with skechup it wasn't that bad at al of lurning to work the basics with my agrarian intellect :lol: .

So that said, here's my design;

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I thought i keep it as simple as possible and tryed to minimize material weight.
The tail rotor, i thought about for 3 days how i could possibly get it as slick as i can.
Don't know if it wil work, not seen anybody do it like this. And stil waiting for parts from HK.

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As you can see, the servo wil push itself of the fixed servo arm that i'am gluing to the tailboom. And if it does witch i think, it wil also take and turn the motor with it.
I've seen other people mount the servo on the tailboom, but that creats more surface area and so, i thought less efficient, because it wil then push itself down.
At least that's my theorie B).

Some parts that have arived.
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So affter designing i wonderd if you could Print out a 3d model in 2d on a peace of paper.
After a quick google i found out that it was indeed possible, but why would you mention it here you think?
Mann... is google skechup a peace of work. After 30 times mis printing the model, because skechup always wants to print the rounding area around the model so it spreads out the model over 6 or wathever nr. of papers. But finaly i figured it out and viola......scale 1:1 exact. ( I have coppies, so if anybodie wants to build it Pm me).
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So now the part where I'am good at doing stuf with my hands ^_^ .
I thought, there is know way you can draw the the model on a hard piece of Carbon-Fiber. So i taped the paper to the CF sheet and carved it in with a stanly knive.
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An canopy would easely fit, because the frame is reasonable thin. The canopy is from the cheap 30dollar heli (450 size) i mentioned earlier.
But i think that it needs a 500 or 550 size canopy, dunno yet. already orderd aan 600size for 4.3dollar on HK to see how that would fit.



That's it for now, because i'am waiting on HK for the carbon fiber square tubes. Hope you like it, grtz johan

Edited by jbkappirossi, 23 October 2011 - 03:11 PM.


#2 wolfes1126

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Posted 21 October 2011 - 09:24 AM

Nice Project,
however, if i cyn be of any Help, use a different Servo, the 1 you have ordered will not last a very long Time and with the tailmotor constantly moving left/right to compensate the YAW it will be gone in no time. Also first tailcrash and the Gear be gone for sure.
I am using only these Servos for Cameramount, Tailmotor on Tri etc:
http://www.hobbyking...?idProduct=6608
Not only are they digital and Metal Gear, but they are also really fast and reliable with its neutral Point etc

#3 juz

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Posted 21 October 2011 - 09:29 AM

I like this. I am learning something everyday. Looking forward to seeing this puppy fly.

#4 metRo_

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Posted 21 October 2011 - 09:40 AM

Can you share how you cut the carbon because even the curves are really good :)
Feel free to correct my english, you can post or pm me, thanks :)

#5 AlPackin

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Posted 21 October 2011 - 10:02 AM

really nice job fabricating the frame

#6 jbkappirossi

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Posted 21 October 2011 - 10:29 AM

Thanks guys.

Nice Project,
however, if i cyn be of any Help, use a different Servo, the 1 you have ordered will not last a very long Time and with the tailmotor constantly moving left/right to compensate the YAW it will be gone in no time. Also first tailcrash and the Gear be gone for sure.
I am using only these Servos for Cameramount, Tailmotor on Tri etc:
http://www.hobbyking...?idProduct=6608
Not only are they digital and Metal Gear, but they are also really fast and reliable with its neutral Point etc


O yeah, i appreciate every knowledge. wil keep it in mind when the hxt500 wears out ;) .

Can you share how you cut the carbon because even the curves are really good :)



Don't know the translation of the saw i used in english google dindn't know ider, but in dutch its called a deqoupeerzaag.
And than just, ''by hand'' sanding it smooth with a metal-veil. don't know that ider in english.
wait a minute al make a pic of the tools I used.

edit;

First dril a hole big enough you can put the figure saw true.
Than saw as close as possible next to the line.
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And than smooth the rigged saw sides out with the metal-veil (wathever it is called in english).
An finaly with a piece of sandpaper. You can also pollish the epoxy when al done to a glose finnish.
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edit;

forgot to mention; first i was a little bit afraid that the 1.5mm thick carbon-fiber sheet was to weak, but man is that stuf strong and rigged.
I think i could even make it out of 1mm thick sheets and stil more than strong enough to hold the copter together.

Edited by jbkappirossi, 23 October 2011 - 03:16 PM.


#7 juz

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Posted 21 October 2011 - 10:48 AM

Is that an LED in the falcons eye?

#8 jbkappirossi

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Posted 21 October 2011 - 10:56 AM

yup. an automatic color changing 5mm rgb led.

I also had some idea's of making a 1000lumen cree xm-l led on it. To give you an idea of 1000lumen that is as bright as an 50wat carheadlight.
and it does that on 3amps @ 3.6volts.

#9 metRo_

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Posted 21 October 2011 - 11:18 AM

" You can also pollish the epoxy when al done to a glose finnish."

epoxy and carbon fiber is the same? :s
Feel free to correct my english, you can post or pm me, thanks :)

#10 jbkappirossi

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Posted 21 October 2011 - 11:25 AM

oow? i thought that epoxy was the glue that holds the carbon-fiber cloth bounded.

#11 jbkappirossi

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Posted 21 October 2011 - 12:21 PM

Lets make it a little bit more challenging. i'm gonna angle the two front tailbooms :P . To lazy to do bolth tailbooms, but you'l get the idea.
Posted Image I wil start as sone as the carbon tubes arrive.

Edited by jbkappirossi, 21 October 2011 - 12:22 PM.


#12 metRo_

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Posted 21 October 2011 - 01:52 PM

are you using Google SketchUp?
Feel free to correct my english, you can post or pm me, thanks :)

#13 jbkappirossi

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Posted 21 October 2011 - 02:24 PM

yes. sketchup 8 pro

#14 jbkappirossi

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Posted 23 October 2011 - 09:52 AM

Hee guys my HK 450 arrived yesterday evening. So i wanted to see how it looks like with canopy on my Tricopter frame with straight and bend arm's i made from some old kabel mannagement tubing i found. lateron i will make it from carbon.
What do you guy's think?



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there is an 3300 3s batterij in it. 446gram

Edited by jbkappirossi, 23 October 2011 - 12:59 PM.


#15 AlPackin

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Posted 23 October 2011 - 10:52 AM

wow that looks pretty cool, can't wait to see how it flies

#16 dankers

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Posted 23 October 2011 - 11:18 AM

Looking great and using the canopy is a nice way to aid orientation, very impressive build.

#17 AlPackin

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Posted 23 October 2011 - 11:54 AM

Pip built a quad with arms like that

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#18 Kristjan

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Posted 23 October 2011 - 12:42 PM

I print all parts on 80g/m2 paper and glue it on material with stick paper glue. Then I cut all parts, sand them to right shape and then remove paper from parts. It goes easy off them.
Nice model. I see that heli canopy is still in use for tricopters. i was one of first that used heli canopy for tricopter. Try with t-rex 250 canopy, looks much better since is smaller than 450 canopy. http://kristi-air-de...s.blogspot.com/
Best regards,
Kristjan

This sentence does not have a sense...
http://www.spacerocket.tk/

#19 jbkappirossi

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Posted 23 October 2011 - 01:17 PM

thanks guy's
I'am very exited to go furder with the project.
And I've just seld my HK 450 an hour ago. So i have a little extra monny for my tricopter build.


Pip built a quad with arms like that


I've got that Idea from a movie, thought it was Avatar, A plane/heilcpoter combo that could takeof verticaly and fly like an airplane.
Just thought it would look nice.

I print all parts on 80g/m2 paper and glue it on material with stick paper glue. Then I cut all parts, sand them to right shape and then remove paper from parts. It goes easy off them.
Nice model. I see that heli canopy is still in use for tricopters. i was one of first that used heli canopy for tricopter. Try with t-rex 250 canopy, looks much better since is smaller than 450 canopy. http://kristi-air-de...s.blogspot.com/


Didn't thought about that idea, but its also a ver good and simple idea to mast te Carbon fiber, because it impossible to draw with a pen on it.


Wel actualy i wanted to order a 500size canopy, because the 450 looks big enough but it barely fits over the sides because of the frame width of 6cm .
And than trim down the rabit ears, because they look like it, where normaly the rotor head sits in between.
Like this.
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edit:

Can someone give a bit of advice over a radio and reciever please?
My first choice was to go with a Turnigy 9x radio from hobbyking for its price and features.
But i'am not so sure anny more, because I thought the radio/reciever warent that importent.
Read some horror stories the las few days over the cheaper radio's and that a good radio is a must,
but what actualy is true or fast, because i don't know enough yet to make a decision on what radio i need.

One thing i do know; I like range :D

Edited by jbkappirossi, 23 October 2011 - 01:51 PM.


#20 jbkappirossi

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Posted 23 October 2011 - 04:08 PM

Yes, i also was planning the fastest tricopter, giving it some front flight Turbo :P .
And make some bad-ass air-intake's on te sides on the canopy, like on a car.......yeah buddy!!!!

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Wel better show it now before i get myself in a mes i haven't eaten cheese of.
Don't know if its possible, but i wanted the duct fan only to kick in on front flight on a separate channel switch.

Edited by jbkappirossi, 23 October 2011 - 04:41 PM.