For Futaba, negative expo calms the response around the center.

http://www.rcindia.org/gas-glow-nitro-planes/my-first-50-cc-gasser-build-thread/msg36395/#msg36395

http://www.rcindia.org/rc-general-topics/question-dual-rates-and-exponential/msg12294/#msg12294

Alam
See anwar's rep above, - ve or +ve depending on the radio, basically non linear control throw with less throw in the centre.

After a while I realized , it is better to fly with the radio on a radio tray for maiden, allows you to trim easily. The only aeroplane I didn't have to trim in a maiden flight was addiction x,
Will put pics of my two trays, one diy and the other one is a cf radio tray

Key to Sucessful maiden is a good take off. After take off most airplanes will pitch down / up and or roll to either side.

(a) for a clean take off, attain sufficient speed before lift off and lift off very gently. After getting air borne continue climbing to a sufficient height before turning, if required continue your climb further
(b) attempt to trim now. Never before you attain sufficient. Height.

Common mistakes

Too much of power on run, premature yanking back on the stick, premature turn, leveling out at low height and attempting to trim by leaving the stick, not knowing where the switches are and attempting to look at the radio for finding the switch.

I have made it a habit to have another pilot standing by for trim changes. This way one never needs to take ones eyes off the model.

In real life aeroplane we have something called a 'cockpit blind fold check'. As the name suggests you are suppose to reach for all relevant switches blindfolded. in RC I would strongly suggest to get comfortable with the radio soon, should be able to reach all switches correctly without hesitation without looking at it. It will remove a lot of your anxiety.

Quote from: augustinev on April 14, 2011, 06:27:11 PM
11. let her fly away from the ground at very shallow climb angle.
12. do not maneuver except for positional turns till you attain safe altitude.

This is a what not to do video,
(a) too steep a climb
(b) very early reduction of throttle
(c) too much of rudder to turn

this is called a classic stalled spiral, where due to Yaw the inner wing stalls while the outer wing continues to produce lift , recovery from this is to 'neutralise rudder and take off bank and get wings level, open power and ease out of the dive'



in the initial stages of your RC Flying you never use rudder.  turns are accomplished by putting on bank (Not more than 20 deg to 30 deg ) and giving very slight elevator

here is one good book for all newbies and intermediates

http://www.ultraligero.net/Cursos/radio_control/the_complete_beginners_guide_to_flying_radio_control.pdf

Wow sir its a complete Guide with nearly all topics covered. 

Sir a million thanks for the book.. its a treassure for any one may be a beginner or expert..

Quote from: rcpilotacro on June 01, 2012, 07:11:59 PM
here is one good book for all newbies and intermediates
http://www.ultraligero.net/Cursos/radio_control/the_complete_beginners_guide_to_flying_radio_control.pdf

Super book! Thank you Augustine sir

Quote from: rcpilotacro on January 01, 2012, 06:24:34 PM
in the initial stages of your RC Flying you never use rudder.  turns are accomplished by putting on bank (Not more than 20 deg to 30 deg ) and giving very slight elevator

+1

But then why do most basic trainers don't have a ailerons and have only rudder with dihedral in wings (easy star/easy cub)?

From my experience, I started with using ailerons and I hardly used rudder. Now I have got so used to it that I find it very difficult to use rudder, which is very important while making last minute changes to landing approaches. I have many times crashed sideways while landing when using ailerons in the last moment to change directions.

on the subject of a maiden - can anyone tell me
of a tx that has cross trims

Quote from: rcpilotacro on January 01, 2012, 06:24:34 PM
This is a what not to do video,

Gusty

Having had this plane, I would consider it as almost impossible to fly. Extremely sluggish - described by somebody as a "fat lady" ( a great looker though). Would certainly have had a direct contribution to the crash.

Discarded the plane after 2 flying sessions.

Quote from: saikat on June 02, 2012, 10:49:36 AM
on the subject of a maiden - can anyone tell me
of a tx that has cross trims

Most, modern, programmable Txs have trims that can be assigned so you can choose between cross or normal. The rationale behind cross trims is that you can use the hand that is not on the control stick, for trimming.

Pretty sure the higher end Futaba radios have programmable trim buttons... the trim control for any channel can be assigned to  any one of the available trims.  Of course, on these radios, any flight function (aileron, elevator, throttle etc) can be assigned to any channel too.  The 8FG has it, and so does the 12channel and higher radios.  The name of the menu is "FUNCTION".

Not sure about other brands... did not look them up.

i am using 14 mz and SD 10g , both has this function

Vishal
i hope in a 3 channel (The one which does not have aileron) aeroplane you are connecting rudder servo to aileron channel?

Augustine sir, I'm having both ailerons and rudder in my plane/radio (Sanwa 6G), but I'm so used to using ailerons that I don't use rudder. One main reason being that the throttle changes every time I use rudder  I have to start practicing using only rudder for some time now, till my thumb gets steady.

This is called Vital Actions Before Take off (Modified for RC Flying)

We in real life memorize using mnemonics called TAFFIHC (Pronounced taffiHC)

T-- Trim- Neutral, correct DR selected
A-- Ac Clean (Not clean , clean, in Clean configuration, which means, If using Air brakes they are in, no hatch is open etc)
F--- Flaps are one notch down (Two notch will create drag and take off run may suffer)
F--- Fuel Adequate
I--- All instruments (Servo, Battery, Receiver, Connections all are "GO")
H-- Hood (Canopy is closed and secured)
C--- Correct model selected, Control Moving in the correct Sense (I move the stick to the Left and call to myself "Left Up", Stick to the Right call "Right Up", Stick Back call "Ele Up" Stick Forward call "Ele down". Rudder Stick Left "Rud Left" and Rudder stick right call "Rudder Right", takes a while to write, very little time to do it)

CG Calculator

http://www.scaleaero.com/CG_Calculator.htm

Planning to debut my plane soon. So many pointers to keep in mind ...