SERVO TRIX

[lowbudget]

helis realy move forward and backwords - here is my list on servo tweaking
1- can the servo center be changed with the trim
2- if it can - is it drawing any power to keep it there
3- would having more forward motion than reverse be better - all helis included co-axil/fp/cp
4- if you did change the servo center where would you run into binding problems

the only way to out run the other guy is to think out of the box - ;D = VIC

[Raygun]

I don't think there is enough variable in the trim pot to change center you would have to pull off the linkage off the servo and reposition it for that. As far as the servos current draw it is better to have them centered (no draw) until you are ready to use them I was surprised to find depending on the size of servo during use they can draw up to as much as 2 amps. And as far as binding I guess it would just depend on how far the swash plate is allowed to move the ball links will provide a lot of movement without bind. A shorten flybar on a coaxial will make it less stable but will allow it to move faster or if you could move the servos so they would push straight from the back and straight from the side instead of pushing up at a 45 degree angle from each side. Ray

[akent]

Apr 1, 2009 11:15:44 GMT -6 lowbudget said:

helis realy move forward and backwords - here is my list on servo tweaking
1- can the servo center be changed with the trim
2- if it can - is it drawing any power to keep it there
3- would having more forward motion than reverse be better - all helis included co-axil/fp/cp
4- if you did change the servo center where would you run into binding problems
the only way to out run the other guy is to think out of the box - ;D = VIC

Hi Lowbudget:
1. yes
2. no
3. same difference - some folks like flying backwards better.
4. not if you don't change the end points (full travel end points of the servo from the system).

What you are doing with trim is moving the centerpoint of the servo relative to the stick position, not the total travel in either direction. So, if you think of a servo total movement on a line graph from left to right, with the normal center point right in the middle, you can move the center point to the right or left with the trim, but you cannot change the left or right line ends.
Kent

[lowbudget]

my idea on the forward/reverse - forward you are lifting the tail / pulling against gravity - reverse you are letting gravity have its way - in stead of a 50/50 go a 60/40 swash plate = VIC

[19000rpm]

HMMMMM, that's interesting about lifting the tail in forward flight and letting gravity have it's way in backward flight. How far "out of the box" did you need to go for that one? ;D

I don't think that would be the case Vic, but I'm ready to be reeducated.

All the lifting take place with the main blades pitch and the head speed and the tail is just along for the ride. I don't think changing the position of the tail servo bias would help.

Happy landings

[lowbudget]

seams that when you try to fly in to the wind forward and it just wont go - turn around and back in to the wind and it will go - am i full of it or not = VIC

[akphill]

A helicopter moves forward and backwards and from side to side when the center of gravity is moved . thats when the swash plate pulls the mechanics out of alignment with the rotors causing it to move to try and align things back up then you have movement the spinning axcess will always align its self so no it wont go backwards by its self

[Raygun]

On Mine it would do the same thing till I found the servos where not centered so I pulled off the bell crank repositioned it on both servos so they where centered and now it goes forward just as fast as backwards. Ray

[lowbudget]

I tryed to change the motion of the swash plate for more forward motion than reverse - well it worked - swash plate travel as listed - .050 reverse - .100 forward - i got lucky this time and did not blow any parts up = VIC