ORIGINAL: vmsguy
I wonder if there's a practical size limit to using boost tabs.
By that I mean, when is a control surface (and by inference the plane) too small to make boost tabs not worth it.
Would a 1/4 scale be too small? 1/5? 1/6? What about small gassers? or even down to 1.20 or smaller birds?
Yes, there is a prictical size limit to using boost tabs. They would need to be bigger than the control surfaces found on a 747 though.
As I said, I use a boost tab that looks like the scale trim tab on the rudder of my scale WACO's. It works, and I can use a reasonable servo. If you are doing anything of at least a normal .40 size it will work fine too. In fact, you could use them on a 1/2A size. I wouldn't expect for them to have much value on the typical park flyer, due to the lack of speed with one of these. Air flow is the necessary force required for them to be effective.
Bill, AMA 4720
WACO Brotherhood #1