Throttle and pitch curves

[Warrior205]

Hello


I am having some problems sorting out my throttle and pitch curves.

The transmitter that i am using is the Futaba T6X.

It does not say anything in the manual about setting pitch and throttle curves, maybe the transmitter is programmed for these so you dont have to set them up, i dunno.

The manual only states:

Pitch rate (Normal, Idle-up and hovering)
Hovering Throttle

Are these settings what i use to program the pitch curves?
If so how do you use these to program the curves?

Im baffled, and i hope someone can help me.

Thanx in advance

Nev

P.S Where can i get film for the blades, so that i can balance them?

[Warrior205]

Hi again,

I have just had a look on another forum (runryder.com) and i found a post about pitch and throttle curves for my Tx.

The post said that the T6X transmitter only has a 3 point throttle and pitch curve becuase it is a budget Tx.

I think that the Tx is already programmed with point 1 and 3 of the throttle and pitch curves and you can change point 2 with Hovering throttle and Hovering pitch, is this correct or am i missing something because their is nothing in the manual saying how to set these up.

Thanx in advance,

Nev

[antsis]

Hi Nev.

I've had a quick look at the manual. It's a little off putting as it shows the pitch rate set at 100% and then shows you how to adjust high and low ends. The 3 channels appear to be the points of the curve. Have you put a pitch gauge on to see what range you have? Try doing that and then play with the channel settings to see if the pitch changes. The throttle curve might have to be done at the field.

Not much, but hope it helps.

Ant

[Warrior205]

Hi Ant, thanx for your reply.

I have looked at the manual again, it looks like that is how you adjust the pitch curves, i will try it tomorrow to see if it adjusts my low and high pitch settings. I have put a pitch gauge on and set the maximum throws to +-10 degrees, and i want to adjust the curves so it gives me easier collective control (because im a newbie and have never flown an Rc heli before, exept on the simulator).

But im still slightly confused. With the pitch rate setting you have 3 choices: 1. Manual 2. Idle-Up 3. Hovering.

Now im guessing that the Manual setting allows me to adjust the low and high point of the pitch curve? But what about Idle-Up and Hovering? what would they do?

Also i guess the only way you can change the throttle curve is with the Hovering Throttle settings because their is nothing else in the manual saying anything about throttle curves. But you can only adjust the curve around hover, not the high and low.

I am thinking that i jumped straight in to buying a Tx without knowing what i was meant to be looking for. Me thinks i have bought a Tx without the 'luxuries', and may have to buy a more advanced one at some point, altho this Tx will probably be ok for my learning days.

Sorry for the long post, and i appreciate the help that anybody can give me

Nev

[Stuart]

Nev,

We all started somewhere, I started off with the FF6 then onto the FF8 and now with a JR9X.

It will get you in the air and do for now....but as you've said you'll no doubt look to change when you feel its time to progress your flying further.

[antsis]

Nev

Sorry I only had time to look at the pitch settings and guessed that the throttle would be much the same. Are you sure you don't mean throttle hold?

If you're a newbie, I would suggest you set your pitch curve in manual to -2, +9. This may entail mechanical as well as electronic adjustment. You are going to be doing a lot of hovering initially and won't need much negative pitch.

Hover pitch is used to set the pitch to around +4 to +5 deg at mid stick. You have manual hover pitch and throttle knobs to compensate for weather conditions.

Idle up is used to keep the head speed high by raising the throttle idle setting. The higher spec radios have at least 2 idle up modes and some have 3. Pilots use these for general flying and aerobatics and will set each mode accordingly. For example, my R60 is set at -2, +11 on idle 1 and -5, +11 on idle 2.

Apart for keeping the headspeed higher, negative pitch is used to reduce lift when descending and when flying inverted.

If the other mode is throttle hold, then this is used to keep the throttle at one setting and electronically "disconnect" it from the collective. Pilots use this to perform autorotations.

Ant

[Warrior205]

Hi,

My pitch settings is +9 and -6 at the moment (both blades), would it be ok if i adjust the radio so i get +9 -2, would that be a good way of doing it, or should i adjust the control rods to get this setting. Also when i put my collective to mid stick the pitch is at zero, how would i get 5.5 pitch at half throttle, at the moment for me to get to this pitch i have to use 3/4 throttle, maybe a little more. Also the pitch rate settings (low and high) do adjust the top and low end of the pitch curve.

As for the throttle curve i am sure that i do not mean throttle hold, i have set that up yesterday along with idle-up. The only thing that adjusts the throttle curve is the hovering throttle, which adjusts the throttle around mid stick, and their is nothing else that mentions "throttle Curve" apart from in this hovering throttle section.

Thanx for all your help

Nev

[antsis]

Nev

+9 is fine for the top end. I would leave it at that setting. With the throttle closed look at what the 1st pitch curve percentage is. If it's lower than 10%, you will be able to get away with adjusting the radio. However with all flying models, it's best to set them up mechanically (i.e. by adjusting the linkages) and using the radio for fine tuning. You may find that if you set the bottom end for -2, the mid stick setting will be close to +5. Alternatively, set mid stick to +5.5, and then see what the top and bottom come out at.

With regards to the throttle curve, it sounds as if you are going to have to get the heli out to the field and see what the headspeed is like. Do you belong to a club that has other heli pilots? The only reason I ask is that it would be a good idea to get and experienced pilot to check the model with you before firing it up.

Ant