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HeliHobby . Ron’s HeliProz South . Century Helicopter

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e-MS Composit Hornet > how does the 3d-x fly?
 
 
audio131
Senior Heliman
Location: swansea , mass , usa

hi,,looking to buy a 3dx ,how does it fly ,is it really 3d able? are the parts qaulity as cheap as the 3d pro by century? is it more whort buying the fully tuned 3d-x?
10-11-2006 Over year old.
 
 
DarkHorse1
Senior Heliman
Location: Gloucester UK

> looking to buy a 3dx
Good value kit for $119 includes CF blades, 'one way' main gear...

> how does it fly ,is it really 3d able?
Yes if you can fly 3D it will with the right setup and good choice electronics (video here).

> are the parts quality as cheap as the 3d pro by century?
Quality is fine most of the time. Haven't compared prices recently. Tower Hobbies have started to hold stock.

> is it more whort buying the fully tuned 3d-x?
I would say no unless your an ali collector, the lighter the better. Replace with ali as you go.

More info here

Hornet X 3D Twister(Axi 2208/20, Tsunami) 27T/180T ~2900 rpm, MS-116 ESC, MS-044 gyro, HS-50 tail, 3x Futaba 3108s, KOK Extréme white blades, 3xTP1320 prolites ~15mins (cruising), AUW=363g. Futaba7C (see video's here)
10-11-2006 Over year old.
HOMEPAGE  
 
 
jh4db536
Senior Heliman
Location: Monterey Park, California

Surprisingly this thing isnt that bad (im coming down from a blinged trex). it's very flyable/3d-able if you build it right (the hardest part). it's MUCH harder than a trex though, so if youre coming down from something larger, this thing is going to be very very twitchy.

it's the low mass of this thing. even at 2-3degrees cyclic pitch i think this thing is fast. it is so light that you can feel the difference between aileron(roll rate) and elevator(flip rate) due to the tail boom mass. wind blows this thing away, it's very scary. this thing flies very well indoors minus the trex-like headspeed.

parts are very good quality IMO even as theyre plastic, plexiglass, G10, or CF. i dont think it really needs ANY bling to fly well. fly it stock and then see if you like it enough to buy the bling...or you can just buy it off the bat since i know the combo deals are cheaper. the MSC bling for this heli is NOT just a copy of the plastic parts: they utilize more robust slider on the tail that requires a different slider or the head is secured with set screws rather than 1mm pins and has adjustable dampening.

this heli is DEFINITELY not crash friendly. luckily, i ONLY bent the mainshaft and stripped the maingear when it threw a tight link on me. it took me 1 hour to pull the mainshaft out and the cost of the crash was pretty high compared to align stuff.

definitely have a strong Tx, this heli benefits a lot from programmable mixing. ie, ail->thr, ele->thr, rudd->thr. with low mass, you feel every change. just the added load from using cyclic will make the heli bounce around unless you have an extremely good governor, dialed curves, and/or prog mixes.

lastly, CG has to be Perfect or exactly as the instructions say. if you dont, this thing is near impossible to fly.

so far i have found this heli to be very enjoyable at lower headspeed. it seems to be more tame, no GE effect, and less twitchy.
10-11-2006 Over year old.
 
 
audio131
Senior Heliman
Location: swansea , mass , usa

thank for info

thanks for the info
10-11-2006 Over year old.
 
 
helikopeter
Heliman
Location: stockholm , sweden

H X 3D

I just bought a x3D , the version that comes with all the "bling" , I must honestly say that the aluminium upgrades are WAY better than the stock plastic parts . As you guys say , the heli must be set up perfectly , otherwise it is nearly impossible tu fly , I tried some flying around , and was really impressed by it´s speed , as well as the stability during hovering , and I have very little interaction.

The only thing that I am noticing, is some tail wagging , I am using a Futaba GY 401/ Hitec Hs 50 , and the gain is already low ( 31% and 40% in GY mode), how can I correct it? , I am thinking about buying a servo arm in aluminium , that comes ballraced , just to see if that solves the problem , check in www.helihobby.com

I am using the recomended MS composite´s brushless outrunner , but my question is: is there a better motor out there in the market? , I mean, something with a little more power? , what can you guys can recomend me? , I don´t know if that could be the set-up, but I can´t do any climb outs , and it also just holds barely on inverted hovering , my pitch curves are basicaly +10 , -10 , and the throttle curve on idle up 2 is 90 , 90, 90 , 80, 70 ,80, 90, 90, 90 ( I am flying with a futaba 12 z) , could it be a problem with the motor gear? ( I am using the one that came with the motor).

Helikopeter
12-11-2006 Over year old.
 
 
Micro-Maniac
Elite Veteran
Location: Pasco,Washington Formerly: Captain Chaos

If you move the tail linkage to the innermost hole of the servo arm then increase the 401 limit you should be able to increase the gyro gain - I was able to increase mine to 45% according to my radio which given it's 150% range might be around 65% actual gain.
12-11-2006 Over year old.
 
 
DarkHorse1
Senior Heliman
Location: Gloucester UK

The wag will probably be vibes causing the gyro to malfunction. Either the steel tail drive shaft resonating or tail rotor balance. When and if you get a silk smooth setup (not easy) you can run a long servo arm (high mechanical gain) and 80 to 100% HH gyro gain without wag:.

I was quite happy with all the light stock plastic for over a year until I started to run 3K head speeds and notice no difference in flight other than the weight. I'm guessing your setup is over weight. The Twister EM300/20 (Axi 2208/20) is a very efficient choice for the 360g X-3D (with good strong cells). If you go much over 380g then the performance drops off particularly in harder 3D extremes. I have recently installed a Jeti Spin11 ESC and Jeti box on 4s 4xTP910 pack but still yet to test properly due to bad weather (should yeild ~180w peak). Or you can try a Axi 2212/12 as a monster alternative (14-22A max 28A, 250+ watts!!!).
12-11-2006 Over year old.
HOMEPAGE  
 
 
helikopeter
Heliman
Location: stockholm , sweden

Tail wagging

Hej guys
Thanks a lot for the help, I have solved the problem, yesterday I installed a Futaba S-3154 digital micro servo in the tail, and besides , I reworked the slider and tail blade grips, it runs smoother now , and the results are amazing, I have a rock solid tail now I can even hover with only the right hand on the cyclic stic , I have even increased my gyro gain , to 42.
yesterday I experienced some extrange on the tail behavior after a while , and also the tail servo was warm , but it was due to some short ( the gyro leads got caught by the main gear´s teeth :rolleyes , but I have already fixed it all. It flies really nice.

12-14-2006 Over year old.
 
 
helikopeter
Heliman
Location: stockholm , sweden

Merry Xmas

Hello Guys

Hope you´ve had a nice christmas , and as we say in sweden,"god fortsättning" ( to continue to have a nice time)

Here I have a question for some of the electronic masters , I was flying my hornet today, and I noticed that the rotor bogs down during inverted flight , so as the gyro can´t hold the tail any longer , my motor is an MS 300/20 , and the ESC is an MS116 , the batteries are 3 Li-po 1500mah. Just for trying something different, I took the ESc(Jeti eco 18) from my MS ecuruil ( which is the same size) as the hornet , the motor is an MS 300/34SL , this combination works perfect , I mean the ecuruil hovers perfect and I don´t have a problem, and since the ESC is somehow stronger i thought that maybe I could get some more "juice" to the other stronger motor , so as to keep the rpm in the rotor , but it seems that when I pass around 50% in the throttle/collective , the engine stops , and I have to start again , and the problem continues , when I change to idle 1-2 , I have no problem in the negative part , but when I move the stick up, it cuts the engine again , my pitch curves are 0 , 25, 50, 75 , 100 in normal, in idle 1-2 , it´s around 96, 96,80,96,96 , and the pitch curve is +10-10 , I am using the standard metal pinion that comes with the motor , I don´t know what the problem might be, can somebody give me a clue?

thanks in advance

Peter
12-25-2006 Over year old.
 
 
DarkHorse1
Senior Heliman
Location: Gloucester UK

> that the rotor bogs down during inverted flight
Check the negative pitch with a gauge, it is quite common to have more negative pitch than you think.

> the batteries are 3 Li-po 1500mah
Sadly they are probably too heavy, 3xTP1320mAh only weigh 85g and punch plenty.

> the motor is an MS 300/34SL
This motor won't work in an X-3D as it is only 1100 rpm/v and require and can't be easily geared to work efficiently. The MS 300/20 is a 1820 rpm/v motor that works great with a 180T/25T gear if the heli's flying weight is less than 380g.

AXI 2208/34 (EM300/34) on 3 cells 11.1v with the stock 180T main gear would require a 42T pinion, which sadly won't fit in the heli frame.

AXI 2208/34 (EM300/34) on 4 cells 14.8v with the stock 180T main gear would require a 33T pinion, which sadly won't fit in the heli frame.

AXI 2208/34 (EM300/34) on 3 cells 11.1v with the MaxIR 110T main gear would require a 25T-27T pinion, should work.

AXI 2208/34 (EM300/34) on 4 cells 14.8v with the MaxIR 110T main gear would require a 20T pinion, should work.
12-28-2006 Over year old.
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e-MS Composit Hornet > how does the 3d-x fly?
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