Okay, my dx6i tx and rx went haywire and i sent it back to eflight for a warranty swap. They sent me a new radio and an ar6200 rx. These all work fine now. I programmed in the coordinates according to the spektrum blade 400 list on the horizon hobby website. I fire up my chopper and it blows air upward at half stick and then pitches to takeoff. Does anybody have settings that will correct my settings? I want it to be able to take off at half throttle rather than barely lifting at full throttle. I also replaced my eflight tail servo with a hi tech, any advice as well. I burned up 2 eflight servos in a week. [:@]

Thanks to whoever is willing to give help!

Hiya Helicop, If your settings are all as they were, then it sounds like you need to start from scratch with the head setup would be my recommendation.

I would start with the finless bob videos:

[link=http://video.helifreak.com/?subpath=finless/trex450&filename=CCPM_Part_1.wmv]CCPM Part 1[/link]
and
[link=http://video.helifreak.com/?subpath=finless/trex450&filename=CCPM_Part_2.wmv]CCPM Part 2[/link]

Just remember that these are for the Trex and the swash moves in reverse for pitch (as in blade swash comes down for +ve pitch and up for -ve pitch).

You will need a pitch gauge to set it properly, but for the swash levelling tool, just strap the smallest allen key that came with the blade to the main shaft (with the head removed) and rotate the shaft. The short end of the allen key will rotate past the three connection points of the swash and you can check the gaps.

Welcome to the insanity...I mean fun.

First of all, are you sure they sent an AR6200? The AR6100e is the usual RX for the Blade400. It doesn''t matter but I''m curious.

If you followed the DX6i setup for the B400 you should have a Normal pitch curve of 35-42.5-50-75-100 and that should give you lift at about 3/4 stick. That''s where you want to lift, not half stick. Half stick should be zero pitch (50%) on the pitch curve.

If you''re sure that air is blowing up at half stick then your mechanical pitch does not match the curve if it is set as above. You need a pitch guage to make sure the pitch matches the curve.

As far as the Hitec on the tail you will have to reverse the rudder channel in the TX Reverse menu and reverse the switch on the gyro.

SeaComms,

If I wasn''t at work I would have beat you to it.
Darn.

What are your pitch curves.. you Normal pitch curves are probably starting at 0 at L Move the L to 35 and 1 to 45 3 to 50 75..100 for H so on.

This is what my settings are at currently....http://www.horizonhobby.com/ProdInfo...400RTFHeli.pdf

Its weird, when i spool up its blowing air up and making a loud fan sound and then when i cross half stick it goes to normal.

Check you TX, make sure you''re not in idle up mode.

Too much negative pitch below half stick.

Yeah does sound like its in idle up if too much negative pitch

However, the TX will beep at you and the esc will not arm if you power on in idle up mode as the throttle has to be at 0 to arm the esc.

Just sounds like the pitch range is way off or servos may be sus; or then again maybe just was a Friday build I would definately be checking the pitch setup. If you have -10/11 at low stick, 0 at mid stick and +10/11 at full stick then the mechanics are correct and you need to adjust on the TX.

My servos work, im not in F mode.........I put the radio in idle up mode and when i pulled the stick down, it actually decresed the rotor speed. Do you think it could be the spindle shaft bent or something? . Something is not right at all. Also the specs say to set the rudder travel to <-90 and ->90. I have no clue what this means, you?

Thanks to all of you for the help on this pull my hair out and screm helicopter.

How do i change this on a dx6i

Not sure what you are asking.
F Mode is Idle up or Stunt.
You should not be trying to start up in that mode, the slow start of the ESC could be kicking in if you tried to start in that mode or switched too soon.
Just stay in Normal mode until you get things figured out.

I'm not sure why the rudder travel adjust comes set at 90% in both directions. But it will control the piro rate of the heli and might be set at 90% to eliminate binding at both end of the tail servo travel.

Since the only thing that has been changed is the TX and RX, providing you have the plugs all in the right places the only place I can see a problem would occur is the TX programming. I would be re-looking at the pitch and throttle curve settings for norm, stunt and hold modes. If you havent set them before they can be a little confusing.

If you are not 100% sure, yell out and we can step you through it.

Have you looked at the Swash plate mix

Aileron -75
Elevator -75
Pitch 85%

Phil

are there instructions somewhere for setting up a dx7i with the b400?

helicop400,
I set my dx6i up just as you did from that same page and had the same responce. Im new in the rc world so i took it down to the lhs and they set it up as follows.
D/R & EXPO AILE 0=80% +20 1=100 +10 ELEV 0=80% +20 1=100 +10 RUDD 0=100% INH
TRAVEL ADJ ALL EQUIL 100%
SUB TRIM THRO=0 ELEV=DOWN 6 GYRO=0 AILE=LEFT 12 RUDD=0 PITCH=DOWN 43
GYRO RATE 1=70% 2=32.5%
THRO CURVE NORMAL IS L=0.5% 2=75% 3=80% 4=85% H=95%
THRO CURVE STUNT L=100% 2=92.5% 3=85% 4=92.5% H=100.0%
THRO CURVE HOLD IS 0.0%
PITCH CURVE NORM L=35.5% 2=42.5% 3=50% 4=75% H=100%
STUNT L=0.0% 2=25% 3=50% 4=75% H=100%
HOLD L=35% 2=42.5% 3=50% 4=75% H=100%
SWASH MIX AILE= NEG75% ELEV=NEG 75% PITCH= +85%
My 400 flew after he did that but was a little too agresive for me so i changed the thro and pitch curves to a linear 0 to 100 from l to h and i can keep up with it now. I dont know that this will fix your heli but it makes mine fly great. I ran into a problem when i changed to hs-55 servos and couldnt figure out how to set up the dx6i for the servos. thats the reason i tried going on that site and finding the factory settings was to start from scratch but they made it worse than before. i hope this helps you in some kind of way. remember i am new and just giving you info that someone else gave to me.
If anyone sees a prob with my settings please let me know.

Are you using analog or digital servos? Did you pull the servo horn off with zero subtrim and plug and unplug the battery to center the servo? Then put the servo horn back on close to 90 degrees? The pitch subtrim seems a little high. I have had some analog servos after doing that setup I still needed a lot of subtrim to get it to 90 degrees. I am just wondering. Then with the normal throttle curve you go from .5 to 75 that just seems like a steep increase to me. If it flies fine for you keep the setting. I am wondering does the ESC arm with .5% at bottom stick.

Nick

Nick,
I am using analog servos. The three on the swash are hs-55's and the tail still has the stock e-flight servo. Yes the ESC will arm,but the settings were intimidating to me is why i changed the thro and pitch to linear. Is that ok to learn with? As far as the horn set up goes he told me to turn the tx on set the thro hold switch to on and scroll down to pitch curve and select hold pos 3 which is at 50% bring the stick up until the two lines were on top of each other then set the horn as close to 90 degrees as possible. Thats what i did (lol not to say my eyes are not a little off) Then he set the sub trims for me. Does this get the same result as your way? All of the trims on the front of the remote are still at center and seems to fly or at least hover good. well it did untill i developed turrets of the thumbs again today and flew it straight into the ground.[] In no way was it the fault of anything but lack of concentration.

If it flies ok for you then you have it set up good. My set up is a little similar for the servos. I don't know if the DX6i has this, but the DX7 has two percents that I look at. When both are 50% then I use the subtrim to make them 90 degrees. If you want I can give you a couple of links to throttle and pitch curves.

Nick

Nick,
That would be great. Im trying to learn as much as i can so maybe small things will make more sence to me.
Thanks alot

Your welcome.

This has a good write up for it.
http://www.helihobby.com/html/throttle_curve.html

I think these videos are the easiest way to learn about set up of helicopters. It will take a good amount of the day to watch all of them if you want. You have to register to helifreak to watch them. Go to the Pitch and Throttle Curves 101.
http://www.helifreak.com/showthread.php?t=41692

Nick