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HomeAircraftHelicopterBeginners Corner › No Lift
09-30-2012 10:44 PM  6 years agoPost 1
conntaxman

rrApprentice

wtn ct usa

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well I installed 3 new hs65 and adj servo arms to 0/ level, and squah plate, but i have no LIFT. ha ha .what should i look for.
tks
John

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09-30-2012 10:57 PM  6 years agoPost 2
ren

rrVeteran

Houston, TX

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Did you ajust them to 90deg while you were 50% in and out on your pitch curve? And no sub trim?

Is it a ccpm sistem?

List your equipment.. that will help Iidentify the problem

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09-30-2012 11:24 PM  6 years agoPost 3
conntaxman

rrApprentice

wtn ct usa

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no lift
Hi ren. I had power to heli and tx. put tx on thr.hold. put sticks in the center, went into subtrim and used that to zero/or square the servo arm,also used the linkage alittle.
should I zero out the sub trim and do what you said "50% in and out on your pitch curve"
Had lift before ha ha ,
John

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10-01-2012 12:03 AM  6 years agoPost 4
conntaxman

rrApprentice

wtn ct usa

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no lift
Ren, i just looked at the pitc cur. and it has
norm +pos 2
stunt
hold 45.0
..........someone set this up for me about a week ago, before i changed the servo's.
is this right for the Thro cur.
norm < pos h
stunt
hold 95
.
squash mix
AILE -75
ELEV -75
PITCH +70
Tks.
John

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10-01-2012 12:37 AM  6 years agoPost 5
Steff Giguere

rrProfessor

St-Eustache, Quebec, Canada

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It's one thing to have the servos zerod out at mid stick, but how much actual pitch do you have at full negative, mid stick and full throttle?

Team Synergy, Rail blades, Team Scorpion, V-Team

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10-01-2012 01:32 AM  6 years agoPost 6
fenderstrat

rrProfessor

Aston,Pa

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did you make sure the new servos move the same direction as the old ones?

Compass helis Support Team
PerformancePlusRC field rep
Mini Titan/SE
TEAM KBDD

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10-01-2012 03:08 AM  6 years agoPost 7
conntaxman

rrApprentice

wtn ct usa

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no lift
First i read were people have changed out the 3 servos and used these.
No.. i didn't take note of how much the stock servos moved.
steff" iM pretty sure that i set up pitch correct. but will look at how to do it again. Im also trying to find how much pitch the 400 uses.I think its 5 or 10
By looking at the blades/ the tilt on them it should lift. I know it did before i did this. ha ha ha .Thats why im here.
Guess it's time for a beer.
wait for a reply.
John

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10-01-2012 03:09 AM  6 years agoPost 8
conntaxman

rrApprentice

wtn ct usa

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no lift
You have to try some home made peach wine. VERY Good.

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10-01-2012 05:11 AM  6 years agoPost 9
dkshema

rrMaster

Cedar Rapids, IA

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First -- it is called a SWASH PLATE. Not a Squash or Squah.

Second, time to learn to fish:

https://rc.runryder.com/p4325158/

Read it, understand it, especially the part about setting up zero pitch at mid stick.

-----
Dave

* Making the World Better -- One Helicopter at a time! *

Team Heliproz

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10-01-2012 05:28 AM  6 years agoPost 10
ren

rrVeteran

Houston, TX

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First thing that you needbto do is straight one of your pitch cuves (0, 25, 50, 75, 100)
i normaly do it on stun 2
Then cero out subtrims and travels to 100
Then activate stun 2 center your stick and place the arm 90deg from servo try to not use subtrim
After level your swash plate
Then adjust your pitch to 0deg
Then top and bottom what ever deg you want to use

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10-01-2012 11:48 AM  6 years agoPost 11
MartyH

rrProfessor

USA

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Is there someone in the area that is experienced with your machine and transmitter. I think you will find it quicker and will learn more with some help to get you off to a better start.

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10-03-2012 01:00 AM  6 years agoPost 12
conntaxman

rrApprentice

wtn ct usa

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no lift
Just was looking at a vid, and noticed that my pitch is backward.When i push the left stick forward the main blade tilts Down.How do i change the direction of the servo in the DXI6. i was looking for it in their but couldn't find it.
tks
John
ill also look on the net too.

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10-03-2012 01:11 AM  6 years agoPost 13
dkshema

rrMaster

Cedar Rapids, IA

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SWASH MIX menu -- change the sign of the number associated with PITCH. If you have PITCH -55, change it to PITCH +55.
ill also look on the net too.
No need to, the web already came to you with the answer. If you would actually take the time to read the very long post whose link I posted earlier, you would have been able to figure that out for yourself. That post will tell you everything you need to get your radio properly plugged in, setup, get everything moving in the correct direction, and as a bonus, what all those features in your radio actually DO.

A few minutes of reading will save you much time and grief, and you will actually LEARN how to set up a heli so you don't have to keep going to the web for answers.

-----
Dave

* Making the World Better -- One Helicopter at a time! *

Team Heliproz

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10-03-2012 01:32 AM  6 years agoPost 14
doorman

rrProfessor

Sherwood, Arkansas

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^^^ +1 x 10
What He Said...

If you had to reverse your pitch, you will also need to check your aileron and elevator travel to make certain that they are going the correct way...
Take your time and READ the post... then go at it on he heli while you read it again!!!!

Good Luck, Stan

AMA 2918-Team Spin Blades,,Castle Creations, Unique Aircraft

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10-03-2012 01:43 AM  6 years agoPost 15
icanfly

rrElite Veteran

ontario

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you got a dx6i manual, you'll find everything there.

1, unplug motor,
2, turn transmitter on, right stick center/ left stick center position, assign the specific heli to the tx, reset all the tx values in the sub menu,
3 plug heli into battery
4, without linkage attached to servo horns, observe and readjust to 90 degrees to mainshaft, unscrew the screw and pull the horn off then put back on in proper position,
5, with upper linkage connected to the blades position the blades without any pitch, FLAT horizontal,
6,make sure the linkage to the servos are now the same length and attach to the servo horn ball without altering the level pitch of your blades.
7, attach the linkage to the servo horns now,
8 on the tx enter the sub menu and go to sub trim. these setting for the blade pitch, aileron, and elevator can be used to fine tune the servos to level the swashplate 100% level 90 degrees to the mainshaft. If the heli is nose or tail or side heavy you can use the subtrim in hover to correct the bias,
( to make sure the servos are operating in the correct manner for flight when you push the right tx stick right the swash should tilt to the right and opposite for the left. The direction on the pitch should be tilting forward when the right stick is moved up and the reverse if moved down.)
9, time to lower the left stick all the way down.
10, unplug the battery,
turn off the tx,
11, plug in the motor,
taker outside to a safe place to fly and turn the tx on, plug the heli in without th on until it recognizes the heli.
12, get clear of heli and slowly move the left stick up to start the motor where the rotor rpm is established at midstick on the left stick while continuing to move the stick upward to begin a hover, the heli will lift off.

Make fine tuning adjustments to the heli to establish a level hover on the tx

That's the 12 step helanon program to overcome any psycho personality disorders and probs helis cause wen they prevent someone from functioning normally to go ahead and fly, we understand, we're here to help in your time of doubt.

go to youtube and type in what you need to set up and watch watch watch,,,,,,,,,,,,,,,,,,,,,,

hehehe

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10-06-2012 03:34 AM  6 years agoPost 16
Rockinar

rrNovice

Houston, TX

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You need to buy a pitch gauge. It's an essential heli building tool and it will tell you why you're not getting lift. It's also not possible to set up pitch curves without one.

The DX manual tells you how to reverse the servos. It's in the radio system.

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10-06-2012 04:08 AM  6 years agoPost 17
conntaxman

rrApprentice

wtn ct usa

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no lift
rock. I have a pitch gauge.and I set it up and it still has the right pitch when I checked. when mid stick, 0 pitch, foward is about 9 .I think it because i didn't more the switch to F mode when i checked,
tks
I left it alone for awhile, mad at myself i guess,for something simple i cant figure it out.
TKS
John

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10-06-2012 02:15 PM  6 years agoPost 18
doorman

rrProfessor

Sherwood, Arkansas

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Frustration!!!
John, don't let frustration set in... what I do, when I have been working on one for awhile, and it just seems that I cannot get something to go right, I set back for about a day, and just do other stuff... then I come back to the project, which is now considered a CHALLENGE... and I know I am going to win... sometimes it takes longer then others, but a "fresh" look at it will normally make that little light come on and all of a sudden, YOU WIN!!!!
Where are you located in Ct... You have a great hobby shop located in Winstead, Ct... I know that they could help you get over the hump if you finally need the help...If you go over to visit, Say Hi to Erwin for me.. he is the owner...
And if you like, I will give you my cell number and maybe I can talk you through it....
Sometimes I think these things were made to just MESS WITH US!!!!

Good, Luck Stan

AMA 2918-Team Spin Blades,,Castle Creations, Unique Aircraft

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10-13-2012 11:10 AM  6 years agoPost 19
Ladymagic

rrKey Veteran

South Korea

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Conn,

This is my first post on RR in over a year. Not much going on in the heli world these days so, I wanted to see if I could shed some light on the problem if you haven't fixed your issues yet.

Doorman is definately right, don't let frustration set in. Everyone in this hobby has had a festering problem at one time or another and if we all gave up, none of us would ever fly.

Your problem seems rather simple though. If you have no lift, it's appeant your pitch isn't properly set, either mechanically or electronically. Without being able to see your setup, I would say check your setup meachically first. Your servos should be zero'd out and 90 at midstick. Your swash should be centered on the main shaft IAW your heli's build manual. Remember to reset your linkages to get your swash to center with your zero'd out servos. The distances the manual gives you are only relative numbers so feel free to adjust them to suit your specific needs. Setting up a new head takes about 10 minutes and is relatively the same on any CCPM style head. Don't worry about your pitch setting until after you've correctly setup your head mechanically. Once you do that, then you can set your desired pitch through your Tx' ccmp program. If your heli is good mechanically, your swash mix and/or pitch curve is wrong.

Do you have any pitch response at all? Is it that some of your servos are opposing each other when you cycle your pitch? If so,it could just simply be some of your servos are reversed. To fix that, just reverse your pitch and aileron values in your swash mix menu. e.i. If you are currently running a-50 pitch value, just invert that value to +50 and you're good to ride. Do not use the servo reverse menu to change travel direction. If not, you may have plugged your servos in the wrong Rx ports. Also, make sure you are set to use the 3-servo ccpm setting on your Tx. If you are using the DX6i then it's fairly easy to check and change your settings.

I could sit here all day and explain everything in explicit detail, but I don't think you need it. Just check those things first if you can't get it to function well, then start from scratch and redo your entire program and mechanical setup. Just make sure you've turned off any program mixes you have. Actually it's probably best to just start a new model in your Tx and go from there. Good luck

Mellisa

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10-13-2012 07:10 PM  6 years agoPost 20
Rockinar

rrNovice

Houston, TX

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I still think there's something you're not telling us. Nothing you say adds up.

1) Put the radio in normal mode.

2) Push the stick 3/4 of the way up

3) Put the pitch gauge on the blade and measure.

4) If the blades have 6 degree or more of POSITIVE pitch at that position, it WILL lift at 3/4 throttle as long as you give it enough throttle.

It does not matter how your radio or servos are setup. If you can get 6 degrees or so positive pitch and enough headspeed, it WILL lift.

If it's not lifting. You don't have enough pitch or enough speed. It's that simple.

You say you have 9 degrees positive pitch and it won't lift. That's just not possible.

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