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Old 01-14-2008 | 07:41 PM
  #21  
MMatheny
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From: Dickinson, TX
Default RE: Axe and 9C


ORIGINAL: quickster47


ORIGINAL: phoneman

quickster47--that would work--post it here or pm me--thanks
Here is the basic setup I am using right now.

Setup for the Helimax Axe CP

PARAMETER Menu:
Swash Type setting: HELICOPTER(HR-3)
MODUL: PPM

CCPM servo channel mapping:
CH1: Right rear CCPM servo
CH2: Front CCPM servo
CH6: Left rear CCPM servo

Servo Reversing:
CH1 = Aileron Normal
CH2 = Elevator Reverse
CH3 = Throttle Reverse
CH4 = Rudder Normal
CH5 = Gyro Normal
CH6 = Pitch Reverse

Swash AFR:
AIL-> +65%
ELE-> -65%
PIT-> -37%

Throttle curves:
Normal: 0.0%, 36.0%, 72.0%, 83.5%, 100%
Idle1: 100.0%, 83.5%, 72.0%, 83.5%, 100%
Idle2: 100.0%, 83.5%, 72.0%, 83.5%, 100%

Pitch curves:
Normal: 40.0%, 45.0%, 50.0%, 72.5%, 100.0%
Idle1: 0.0%, 27.5%, 50.0%, 72.5%, 100.0%
Idle2: 0.0%, 27.5%, 50.0%, 72.5%, 100.0%

PROG - MIX1:
ELEV->THRO (Ch2 -> Ch3)
Down -20%, Up +20%

PROG - MIX2:
AILE->THRO (Ch1 -> Ch3)
Left +20%, Up -20%

Why mix throttle and aileron/elevator?

Cyclic movements take additional throttle to keep head-speed up, this is something I learned a while back from suggestions for the Hornet from Eric Larsen's home page.

Easiest way to test for yourself is to hover and just run the helicopter through some quick rocking motions, you'll be able to hear the head-speed drop.

The two mixes add throttle during cyclic simply to keep the maneuverability up, the stock radio doesn't do this, and it's why you hear so many people complain about a stock Axe losing head-speed in their first loops.


I'm confused by your P-Mix settings. On my 7CHP, for example,
P-MIX1 is as follows:
CH 2>3
RT>-20
>+15
OFS>SET

P-MIX2
CH1>3
RT>±0
>+15
OFS>SET


I cannot figure out how to modify the top setting (whatever RT means!!)

(well, re-read the Cross book and it explains it a bit, but I cannot see how it relates to the mixes mentioned here!)

I don't know how you get these settings (maybe the terminology on the 7C is different from the 9C)
PROG - MIX1:
ELEV->THRO (Ch2 -> Ch3)
Down -20%, Up +20%

PROG - MIX2:
AILE->THRO (Ch1 -> Ch3)
Left +20%, Up -20%

I have both the user's manual and the 7C User's Guide by AnnMarie Cross, and NEITHER really explains the display and what it means. Maybe someone smarter than me can help me understand this programming.