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Scorpion Power GLOBAL 3D
Helicopter
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Other › Hovering for a beginner
05-23-2006 03:40 AM  11 years agoPost 1
Kaotic

Senior Heliman

Novi Michigan

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I've made a few flights w/ my new trex, it seems to be a little touchy almost like my blade CP except the tail holds much easier. Basically I just want to practice hovering does anyone have any good tips on setup so my trex is a little easier to hover???

Thanks!

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05-23-2006 04:31 AM  11 years agoPost 2
Slowpoke

Key Veteran

Dublin, OH

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Use the inner holes on the cyclic servo arm, and put some flybar weights on the flybar. I used 2 small wheel collars on each side, really tamed it down.

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05-23-2006 05:02 AM  11 years agoPost 3
gary jp4

Senior Heliman

Nashville, TN, USA

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I programed in some expo.

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05-23-2006 05:31 AM  11 years agoPost 4
cooperd

Senior Heliman

Everett

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450XL 1ST flite tonight!!

YESSSS! It's easier to hover than my CP! I agree with above. I put in 35% expo to tame it down. Quickly changed that to 25%. Also put two weights outboard near paddles. With the Futaba 401 gyro heading is rock solid and it is really stable. Just recognize that if you put in a lot of expo it will feel mushy and take fairly large stick throws to get response. I think I'm going down to 15% next flight. Love my Trex!

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05-23-2006 06:08 AM  11 years agoPost 5
jh4db536

Senior Heliman

Monterey Park, California

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i have not flown with flybar weights in a VERY long time, but recently i got the opportunity to 'trim' someone's heli for them (they had heavy shogun paddles).

jeez, i never noticed back then what difference the paddles make in suffocating the response of the heli. it just lags the cyclic controls so bad i could barely control the heli.

anyhow i let them try my heli, and they loved it. their explanation was my heli was so easy & 'light', and their's was very 'heavy'. i changed their flybar and paddles to trex paddles with no weights and it became a lot nicer.

conclusion - based on this experience, i would Never recommend adding weight on the paddles to anyone (unless it was for gyroscopic stability which is not a problem on a high headspeed CP like a trex).

use EXPO to calm the heli and ONLY expo, it seemingly slows the heli down without lagging the responsiveness. i started with 15% @ 5to6 degrees cyclic pitch. im down to 10% now (almost a year later) where i think itll stay for a while....i think i could do 3d without lowering it more.

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05-25-2006 03:31 PM  11 years agoPost 6
gary jp4

Senior Heliman

Nashville, TN, USA

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I am running 18% on elevator and aileron. I probably should run some on cyclic as well. I am running the 11 tooth pinion also. My LHS had lower throttle curves with 85& max in normal mode at frist and 13 tooth pinion but that caused problems so I went with "normal" throttle curves and the 11 tooth and still seems like pretty high head speed. I put a tach on it and it was around 2600 in normal and 3100 idle up, but I don't trust that I think it must be lower. I did it under a light indoors and I think a light can give false readings. Some times the tach will read something just pointing at the light. I will try it outside when I get a chance.

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05-25-2006 11:16 PM  11 years agoPost 7
aircare84

Senior Heliman

Marysville,OH

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gary,
elevator & aileron are the 2 cyclic axis' on a heli.
I have a XL w/11T pinion,align430L,35a ESC & 325 Pro woodies & I get 2000-2200 on my headspeed, measured outside.Throttle about 80-85% range on those measurments.

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05-26-2006 12:10 AM  11 years agoPost 8
standard_63

Heliman

Seattle

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I agree with jh4db536 -- I had a much easier and more fun time hovering with the flybar weights removed. I was quite surprised. I also tried them slid in halfway toward the center and that helped too, better than on the ends.

Also, for me it makes it easier to control if I hold the control sticks with my forefinger and thmb pinching them, rather then only using my thumbs.

I didn't like using expo as it seemed to slow the heli response down, and with hoverin the quicker response time helped me a lot. I was able to anticipate how my movements would effect the heli better, and correct that much better.

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05-26-2006 01:46 PM  11 years agoPost 9
KarbonBird

Key Veteran

Australia

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I would say the most important thing is to trim the heli up correctly so you should just increase the throttle and it should take off with very little adjustments needed. This is a great way to learn to hover - and you should become more confident quicker as you are not having to fight the heli to stay on course. You can just focus on the job at hand and that is coordinating the controls that keep in one spot.

Good Luck!!!

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05-26-2006 01:56 PM  11 years agoPost 10
nheather

Key Veteran

Horsham, West Sussex, UK

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When you say that the Align gyro takes a lot to set up, what are you referring to.

Not doubting you - just that I have yet to set mine up so would appreciate some insight.


Cheers,

Nigel

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05-26-2006 04:22 PM  11 years agoPost 11
swattley

Veteran

West Milford NJ

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i set up my dual rate switch on my 9c and added the expo in the low rate, i use the low rate for hovering and then switch to high for normal flying with 0 expo. i got so used to the sensitive controls in the high rate that when i took my raptor 50 out for the first time for the season i thought something was wrong at first because i was getting very little response.

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05-26-2006 10:09 PM  11 years agoPost 12
gary jp4

Senior Heliman

Nashville, TN, USA

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elevator & aileron are the 2 cyclic axis' on a heli.
Thanks I meant collective. Or change the curves. That is about what I thought head speed should be. Still haven’t had a chance to check outside.

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05-26-2006 11:06 PM  11 years agoPost 13
koko76

Senior Heliman

Nashua, N.H. USA

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I don't know as you want to put Expo on the collective. I don't even know if many radios have this option. If you want that kind of response, change the curve to that shape, but I don't see doing that as a really viable option. If you really want the pitch to be less touchy, you can try reducing the pitch range SLIGHTLY. I've limited mine down to about +9 at the top, and found it smoothed things out a bit, but I've since gone back as I didn't like it that much. You don't want to limit it too much, as you might need it.

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05-26-2006 11:13 PM  11 years agoPost 14
firestat

Senior Heliman

Columbus Ohio

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Little, tiny movements on the sticks. Watch the way the heli moves and do small adjustments. If you have a simulator, practice on that. It really helps. Not tech advise, but it works.

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05-27-2006 07:52 PM  11 years agoPost 15
gary jp4

Senior Heliman

Nashville, TN, USA

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Thanks. I think I'll leave the pitch alone for now. I am getting used to it. I would sometimes move the collective slightly when making rudder changes. Checked head speed today and it is 2270 normal about where it hovers, and 2380 in idle up with the Align 430, 11 tooth Pinion, TP 2100, and 325 Pro woods. Stays about the same with power / pitch changes.

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05-28-2006 05:43 AM  11 years agoPost 16
BoneDoc

Senior Heliman

San Antonio, TX

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I came from planks, and with 3D throws, you need 45% expo, so that's what I put on mine. Mind you that my cyclic mix is 90% with pitch mix 60% to get the necessary -10 to 10 degrees of pitch. With this setup, it's smooth when I want it to, but will stick bang with the best.

**If you ain't crashing, you ain't flying hard enough**

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05-30-2006 05:06 PM  11 years agoPost 17
whtbronco

Senior Heliman

Winchester, Virginia USA

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I had put weights on mine originally after flying my buddies 450X and with the stock plastic head it needed it to stabalize the heli. Now with a full metal head, except grips, I don't need them and will be removing them before the next flight. I think it depends on how much slop you have in the head assembly and I couldn't get rid of the slop very well with the plastic parts.

I have also found that my Rex is much more stable at 2700rpm head speed than at 2200, however it also more responsive.

FWIW, I don't use expo and don't like it. On my all my planks I set them up for full defelection and I do fly 3D. I like the controls sensative and don't like to move the sticks very far since the further I move them the more control interaction I get. Most people don't like sensative sticks though.

Chris Wish I was flying!

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06-02-2006 07:52 AM  11 years agoPost 18
electromagnetic

Heliman

san dimas cal

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so you guys say the a trex with high head speed hover better

with the flybar weights removed iam running an astro 02/13tooth/325pros/trex se,i will try this tomarrow i get a good hover but it could be better iam at 85 to 90 at hover in my throttle curve have to keep it high their allways seems to be wind when iam flying hope it works! i wonder if flight time will increase?

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