Hello Mark,
I am moving up to intermediate this year and have been practicing the 90 degree one roll rolling turn (from cross box to the back of the box). To start with the turns are coming out awsome, but getting to inverted at 45 degrees seems difficult to manage and after inverted I can't seem to get the roll rate to slow down. I assume it is because now I am using the same rudder and aileron, but I can't figure out which to back off on. Can you give me any tips for maintaining a constant roll rate throughout the entire manuver?
Thanks
Rick

Hi Rick....Wayne @ Sew Busy here.... You could probably check your rudder/aileron mix to see if on Knife-Edge, with the rudder input, you have any roll coupling. If you do, it will adversely affect your rollers since you will either speed up or slow down the roll rate with rudder input.

So....the first place to start is to mix out the roll coupling (if any). Then, when practicing, you have to know what your airplane is going to do...that comes with "burning some gas"! Mark has always been a stickler for flying the plane at a constant speed, so you also need to pay close attention to this when you enter & throughout the entire roller maneuver.

I'm sure as soon as Mark gets the time, he will give you a bit more in-depth reasoning.
Wayne
Sew Busy
http://www.sewbusy.com

Yah mahn!

-Kelly Gerber

Hey Wayne,
Thanks - yeah I know what being busy is all about, Keeping a constant speed is a good point too. Curious to see what Mark will say. I already have all of the Rudder Aileron mixing taken out. I spent significant time progamming a curve for the Rudder and Elevator coupling rather then a linear mix. I was flying the sequence all weekend, with mixed results. You know I don't think the K is that high on this manuver, but still I want to get it right. The other problem is that it starts as a cross box manuver and I tend to make the cross box line too long so that it is way out there and hard to see exactly. I am thinking too hard before I start the manuver, I think part of it is I need to speed it up and bring it in tight. I'll keep working on it but it is getting really cold up here LOL. I'm all wind burned and frozen solid as a cube, but I did kill my TX battery flying all day yeasterday and today.....
RickP

Test your R-A mixing by flying inverted flat turns, not in knife edge. You hit the rudder harder in attitudes other then knife edge in rollers than you do in knife edge in a point roll or something. Usually the percentages are a little different.

-Kelly Gerber

Kelly,
Never heard of anyone testing R-A coupling like that. I guess I will try it this weekend. I am still trying to get my mixes correct.

I have, and Kelly has a valid point. Full rudder in horizontal flight is achieved more often than full rudder in knife edge, at least for precision flying. Typically, full-rudder knife edge is only achieved when hotdogging/3ding.