RunRyder RC
WATCH
 2 pages [ <<    <    ( 1 )     2     NEXT    >> ] 1336 views POST REPLY
HomeAircraftHelicopterBeginners Corner › Pitch issues
03-05-2012 03:48 PM  6 years agoPost 1
NLDIRENZO

rrApprentice

New York

My Posts: All  Forum  Topic

So i just broke my out my 450 and I am doing a fresh rebuild... I installed all the servo's put my radio at half stick and installed the servo horn's as close to 90 as possible.. mad a few minor sub trim adjustments. From there i made sure the swash was level I installed the head and blades then put on my pitch gauge made sure in stunt mode at half stick I was at Zero pitch on both blades but when i move my throttle stick up and down and any movement at all my blade grips are barely moving. I have not done a test flight because i compared the movement on my 500 to the 450 and the 450 head barely moves... So i feel like if i try to hover it i'm gonna have ZERO control any ideas?

Did you mean to do that? Yeah its called a crash landing its a new trick

PM  EMAIL  GALLERY  Attn:RR  Quote
03-05-2012 04:14 PM  6 years agoPost 2
Pistol Pete

rrProfessor

Seffner, FL

My Posts: All  Forum  Topic

fresh rebuild = fresh programming

~~Enjoying the hobby one flight at a time~~

PM  EMAIL  HOMEPAGE  GALLERY  Attn:RR  Quote
03-05-2012 04:20 PM  6 years agoPost 3
siguy2k

rrNovice

Ne

My Posts: All  Forum  Topic

Washout arms, mixing arms and flybar cage all level at mid stick? Linkages the same length or close? Im a newb but those are things that i would be checking. Also end points in radio all at 100? Swash moving full travel?

PM  EMAIL  Attn:RR  Quote
03-06-2012 06:26 AM  6 years agoPost 4
NLDIRENZO

rrApprentice

New York

My Posts: All  Forum  Topic

Everything looks level at half stick I will post a pic and video tomorrow

Did you mean to do that? Yeah its called a crash landing its a new trick

PM  EMAIL  GALLERY  Attn:RR  Quote
03-06-2012 06:27 AM  6 years agoPost 5
NLDIRENZO

rrApprentice

New York

My Posts: All  Forum  Topic

If I can get one person willing to really help I will take a video of servo movement and head movement when I move the sticks if someone wants to help I will send a video

Did you mean to do that? Yeah its called a crash landing its a new trick

PM  EMAIL  GALLERY  Attn:RR  Quote
03-06-2012 07:07 AM  6 years agoPost 6
ticedoff8

rrKey Veteran

Morgan Hill, CA. USA

My Posts: All  Forum  Topic

What radio?
The Spektrum has a screen for setting the pitch, collective & roll travel volumes. Not the servo travel volumes - the functions.

I don't have my radio with me right now, but on my 450 Pro, each one is a different value, but they started at around 65%.

Basically, you use the sub-trims on the three servos to set the swash level at 50% stick
Then, you set the travel volume of the three servos at 100% (up-stick) and 0% - each servo will be different to keep the swash level.

Then you use the function screen to fine tune the collective, the pitch and the roll.

EG: You set up per the above, and you decided there is too much up / down collective. On the function screen, you would dial down the % until you had the max +/- collective you wanted.
Don't adjust servo travel volume - adjust the function.

PM  EMAIL  GALLERY  Attn:RR  Quote
03-07-2012 12:44 AM  6 years agoPost 7
NLDIRENZO

rrApprentice

New York

My Posts: All  Forum  Topic

I fixed it for some reason in the swash mix menu my pitch was set to -20 i changed it to -60 and vwallah its fixed... weird

Did you mean to do that? Yeah its called a crash landing its a new trick

PM  EMAIL  GALLERY  Attn:RR  Quote
03-07-2012 03:26 AM  6 years agoPost 8
siguy2k

rrNovice

Ne

My Posts: All  Forum  Topic

Thats what that setting is for. Adjusting your overall pitch of the blades.

PM  EMAIL  Attn:RR  Quote
03-07-2012 04:26 AM  6 years agoPost 9
NLDIRENZO

rrApprentice

New York

My Posts: All  Forum  Topic

so then what is the proper setting for the T rex 450 ??? and if that is what you use then why after set up do you have to use a pitch gauge to make sure you have zero pitch at half stick??? I get what the pitch does my issue is what are all the different settings for I.E why do you have so much range to adjust your pitch -100 to +100 ???

i guess i need to do some more research i can build the helis's and fly them ok but i don't understand how everything works all that much

Did you mean to do that? Yeah its called a crash landing its a new trick

PM  EMAIL  GALLERY  Attn:RR  Quote
03-07-2012 04:59 AM  6 years agoPost 10
budz

rrApprentice

las vegas

My Posts: All  Forum  Topic

on spektrum radios, the default on the swash mix is 60 for each control surface. if the swash is not moving in the right direction, just scroll it till it becomes negative. for pitch, if you have more swash travel, decrease it until you get the desired pitch value. vice versa if you do not have enough blade pitch. this is also applied to cyclic pitch.

team solo

PM  EMAIL  GALLERY  Attn:RR  Quote
03-10-2012 02:05 AM  6 years agoPost 11
NLDIRENZO

rrApprentice

New York

My Posts: All  Forum  Topic

The heli practically flys itself now! AWESOME!

Did you mean to do that? Yeah its called a crash landing its a new trick

PM  EMAIL  GALLERY  Attn:RR  Quote
03-10-2012 05:02 AM  6 years agoPost 12
NLDIRENZO

rrApprentice

New York

My Posts: All  Forum  Topic

Lipos
Ok so i am running 2200mah 20c 3s lipos on my 450 and duel lipos on my 500 but i'm a little confused about the numbers and see that lipos are very expensive

CAN SOMEONE PLEASE GIVE ME A LESSON ON ALL THE NUMBERS AND CELLS AND WHAT IS APPROPIRATE FOR WHAT HELLI AND WHAT LIPOS ARE BETTER THAN OTHERS

i don't know as much as i should about these and would sincerely appreciate someone teaching me a little about these batteries

Did you mean to do that? Yeah its called a crash landing its a new trick

PM  EMAIL  GALLERY  Attn:RR  Quote
03-10-2012 05:06 AM  6 years agoPost 13
siguy2k

rrNovice

Ne

My Posts: All  Forum  Topic

Have you ever watched finless bobs videos? I learned ALOT from them.

http://helifreak.com/forumdisplay.php?f=60
http://helifreak.com/showthread.php?t=41692

PM  EMAIL  Attn:RR  Quote
03-10-2012 05:10 AM  6 years agoPost 14
siguy2k

rrNovice

Ne

My Posts: All  Forum  Topic

PM  EMAIL  Attn:RR  Quote
03-13-2012 07:45 AM  6 years agoPost 15
mary_jolisa

rrNovice

shenzhen,China

My Posts: All  Forum  Topic

If you are real beginner on flying helicopter.
It is important to set pitch curve setting on normal mode.

PM  EMAIL  GALLERY  Attn:RR  Quote
03-19-2012 02:45 AM  6 years agoPost 16
bigdog714

rrVeteran

Rochester, MN U.S.A.

My Posts: All  Forum  Topic

Basically the mah is the amount of fuel in the battery, the more mah the more flight time. The C rating is used to determine how many amps the battery can deliver in a boost situation. Needless to say not all 20C 3S batteries deliver the same max amps, a lot has to do with the basic construction of the lipo. The rule of thumb with a heli is go cheap and go home in pieces! Helis require some serious amps to pull the tricks they do.

Make sure when you buy a motor you check the efficiency rating, that helps in flight time. When I went from an Align motor to a Neu motor on my 600E, I picked up about 40 seconds of flight time, and the motors are very similar in over all power ratings , but the Neu motor was far more efficient.

To set up the pitch on a 120deg swash the simplest way is to hook up the three servos, power them up, move the pitch up and down to see if all the servos are moving in the same direction. If one moves opposite of the other two, simply reverse that one servo. It doesn't matter if the direction of all three is the opposite of the stick input, we will fix that next!

The rest of the set up is done in the swash mix. The standard default is usually +60 across the board, pitch, aileron, elevator. If you move the pitch up and down and the three servos are giving you negative pitch instead of positive, simply go into the swash mix and change the pitch from a +60 to a -60. Now the three servos are moving correctly. Do the same for the aileron and elevator, check the movement and change it in the swash mix just as you did the pitch. You will dial these numbers in when you set your pitch and cyclic max degrees, 12/7, 15/9, what ever you feel comfortable with, basically the lesser if your new.

Set the pitch curve in normal for 0 bottom, 50 center, 100 top. Set the pitch curve in idle1 to a flat line 50 across the board. Using idle1 on your radio will set the servos so that you can install the servo arms at 90degree, or whatever position is suggested for 0 pitch. Play around with different arms before you use the sub-trim to make the final tweaks.

From here you start by leveling the swash, most helis have a 0 pitch tool that fits between the frame and the swash to get the correct position. If you don't have one you should at least have a micrometer to set the length of the connecting rods, that will give you a good start.

Now you just level your way up the head, washout arms, mixing arms, and finally blade grips, all should be level or parallel to the frame as long as the main shaft is at a right angle to the frame.

Now when you switch to normal on the radio and run the pitch up and down a few times, start checking to see that you have the same positive pitch as negative pitch. If you do your travel is symmetrical and you can set up your pitch and cyclic travel. Unfortunately you usually have to do some minor tweaking to get it perfect.

The pitch is easy, adjust the number in the swash mix for pitch until you get the max pitch you want. The cyclic is a little harder because the flybar has to be parallel to the frame for the elevator settings ad at a right angle to the main shaft for aileron, also remember to set the radio to idle1 so your at 0 pitch. You can buy a tool that will lock your flybar to the head specifically for these two settings.

Pretty simple, Yes?

MD 800
Logo 600SE
Logo 14/500 Carbon
Ballistic 700
HD 500V2
Hirobo 50E
Avant 90E

PM  EMAIL  GALLERY  Attn:RR  Quote
03-20-2012 05:16 AM  6 years agoPost 17
joeskeeter

rrVeteran

South Georgia

My Posts: All  Forum  Topic

Have you ever watched finless bobs videos? I learned ALOT from them.
He can explain the curves so well. I always had some problems understanding the curves, and after watching the videos, it was like bling, the lights went on.

Wish he would do one on wing lift.
I know the low pressure high pressure thing, but
still don't have that REAL understanding of what's
happening. It's frustrating.

Everybody has a plan until they get punched in the face - Mike Tyson

PM  EMAIL  HOMEPAGE  GALLERY  Attn:RR  Quote
03-20-2012 07:22 AM  6 years agoPost 18
NLDIRENZO

rrApprentice

New York

My Posts: All  Forum  Topic

Pitch
I have watched almost all of Finless bobs videos I know what i'm doing 80% of the time but i like to just ask questions sometiems to get a better understanding... its only my second year of flying so the more i can learn the better

Did you mean to do that? Yeah its called a crash landing its a new trick

PM  EMAIL  GALLERY  Attn:RR  Quote
03-20-2012 11:39 AM  6 years agoPost 19
joeskeeter

rrVeteran

South Georgia

My Posts: All  Forum  Topic

I like the way he explains things.

I'm more careful with setup now, especially with the 90
I just got. Been over it so much, and then last night, found 2 screws missing, and not critical areas but still, perplexing that I missed them.

Everybody has a plan until they get punched in the face - Mike Tyson

PM  EMAIL  HOMEPAGE  GALLERY  Attn:RR  Quote
03-20-2012 02:31 PM  6 years agoPost 20
bigdog714

rrVeteran

Rochester, MN U.S.A.

My Posts: All  Forum  Topic

Its fun to mess with throttle curves and spend some time finding setups that work for different tricks, but ultimately I fly a governor on all my helis. Having the ability to do what ever I want on impulse and not have to worry that I wont have the power I need makes flying much more enjoyable and has actually elevated my skill level.

MD 800
Logo 600SE
Logo 14/500 Carbon
Ballistic 700
HD 500V2
Hirobo 50E
Avant 90E

PM  EMAIL  GALLERY  Attn:RR  Quote
WATCH
 2 pages [ <<    <    ( 1 )     2     NEXT    >> ] 1336 views POST REPLY
HomeAircraftHelicopterBeginners Corner › Pitch issues
 Print TOPIC  Make Suggestion 

 5  Topic Subscribe

Monday, September 24 - 4:13 pm - Copyright © 2000-2018 RunRyder   EMAILEnable Cookies

The RC discussion world needs to consolidate. RR is now one choice for that. Its software is cutting edge. It hosts on-topic advertising. Help RR increase traffic buy making suggestions, posting in RR's new areas (sites) and by spreading the word.

The RunRyder Difference

• Category system to allow Rep/Vendor postings.
• Classifieds with sold (hidden) category.
• Classifieds with separate view new.
• Answer PMs offsite via email reply.
• Member gallery photos with advanced scripting.
• Gallery photo viewer integrated into postings.
• Highly refined search with advanced back end.
• Hosts its own high end fast response servers.
• Hosts thousands of HD event coverage videos.
• Rewrote entire code base with latest technology.
• No off-topic (annoying) click bait advertising.
Login Here
 New Subscriptions 
 Buddies Online