Struts or No Struts on a Robinhood 99
As I recall, the Robinhood has balsa spars, and it doesn't have a sheeted leading edge to form a D-tube. If that's the case, the struts provide support and keep the wing from twisting. I'd say put them on.
The Robinhood's a good plane. It's going to be real tempting to fly it aggressively, even with a small engine up front.
Roger