Futaba 9C super Swash AFR Rate

[t-rex pedro]

I have set up my t-rex nitros with swash SR-3. Having read an article in a magazine that suggested putting the aileron and elevator settings to 100%, I tried this and found much larger servo throws than by using Dual Rates or ATV. Although there is binding at 100% in idle up 2 with + and - 10 degrees.

Does anyone know whether the rates should be left at 50% or increased to get a more responsive roll/flip rate?

If not, which is better to increase the throws - Dual rates or ATV?

Hope this makes sense. Any advice would be gratefully received!!!!

Cheers

[robgt]

100% on the swash mix menu for aileron and elevator is too high.
Reduce it so it doesn't bind - then reduce it more until it flips and rolls how you want it to.

Leave end points at 100%.
If you want to limit throws then you could setup dual rates and have less throw setup on a switch.

Cheers,
Rob

[t-rex pedro]

Thanks Rob

Just what I needed to know!!

One more question:

Do I leave the swash pitch rate at 50%i n this menu? Somebody told me to first set plus and minus 10 degrees pitch using this, then adjust to suit various flying conditions (Norm,idle 1 and 2). Any ideas?? Its set up fine in these modes using the standard 50% but just want to make sure! Can of worms here!!

[robgt]

50% is the default value (for all three settings I think...) so setting up the mechanics at that is the right thing to do. Once you have +/- 10 there, increase the pitch value as required.

The way I set them up (briefly) is to make sure the Tx has no trims set. Remove all sub trims, set end points to 100 - then with the sticks centred, get the servo horns set to 90°, and everything from there up to the top of the head at 90° too - so mixing arms, bell cranks etc. With that done, the mechanical side should be spot on and you can just set it up to fly how you want by setting the transmitter only.

Cheers,
Rob

[t-rex pedro]

I left it at 50% and used the radio to get my desires pitch ranges. Is this correct? Also, how do I measure the cyclic degree range? Is 7 degrees of cyclic the norm?

The more I learn, the more I dont!!!!!

Thanks,
Peter

[robgt]

I left it at 50% and used the radio to get my desires pitch ranges

I didn't quite follow that
Set the heli up mechanically for +/- 10 (as mentioned) and then using a flat (linear) line pitch curve from 0% to 100%, modify the swash mix menu pitch setting until you get the desired amount of pitch.
I guess you adjusted end points instead??
If so, put them back to 100% and use the Swash mix menu instead.

You can run as much cyclic pitch as you want, but the combined total of cyclic pitch and main blade pitch doesn't want to go over 20(ish) degrees or you can stall the head in flight - so if you run 14 degrees of main blade pitch and 10 degrees of cyclic pitch, and ramp it all in, you'll stall the head (24 degrees total) - you would need to control the amount of either one to keep the total pitch amount below the threshold.

All that said - yeah, 7 or 8 degrees is ok
Measure it by fitting the pitch guage to the paddle, then holding the cyclic stick in the appropriate direction while eyeballing the guage against the main blades (which are folded out straight).

Cheers,
Rob

[t-rex pedro]

Thanks Rob

I meant I left the default 50% pitch setting in the swash menu. With this the pitch range is about +/- 12 degrees with a linear pitch curve. I then adjusted the pitch for each flight mode using the pitch menu. Sound ok?

Thank you so much for all your advice.

Pete

[robgt]

Ah, I understand now - yes, thats exactly how you want to do it

Happy to help!
Cheers,
Rob