Throttle Curve + Throttle ATV on DX7

[Pulento]

Hi Guys,

I recently got a DX7, this is my first TX and I'm using it with my Dragonus which has a quite powerfull Medusa brushless. Since I'm beginning I want to limit the RPMs this helis gives to me.

So I'm playing with throttle ATV to limit the high endpoint to %80 and several questions came to me ?

Which is applied first ? the throttle curve or the ATV ?

I mean if I set %80 ATV if my last point on the curve is 100% I'll get %80 RPMs ? What happens to the middle point ? it will get multiplied by 0.8 or by something lower than that (proportional since the ATV is 100 at low and 80 at high) ?

Thanks !!!
:)

[DavidH]

My suggestion. Leave the ATV's at 100%. Alter the throttle curve to get the RPM's you desire. It is called a Throttle Curve for a reason. LOL

David

[BarracudaHockey]

Yep, what David said.

What you can do is set up a cyclic to throttle mix to add throttle when you give aileron or eleavator to keep your head speed up in manuvers but always allow the ESC to see the full throw available and limit the head speed with your throttle curve.

[Pulento]

Thanks,

My idea of using ATV + curves was to not loose resolution on the curve. But anyway if I let the ATV at 100% and the last point of the curve to 80% how do the ESC would see the full throw ?

But what is the order of the operations ?

Curve -> ATV -> Expo
ATV -> Curve -> Expo
Expo -> Curve -> ATV
.....

[Pinecone]

Either way the ESC will not see full throttle.

I prefer to run 100% max on the throttle curve, and change head speed by changing pinion size. The ESC i is more efficient at higher throttle positions.

[Pulento]

Either way the ESC will not see full throttle.

I prefer to run 100% max on the throttle curve, and change head speed by changing pinion size. The ESC i is more efficient at higher throttle positions.

Yeap :D the problem I'm still waiting for the 11&12T pinions. Anyway the DX7 manual isn't clear on the order of operations which I suppose is mostly the same order in all TXs.