Originally Posted by
iron eagel
If you can not find an adequate substitute you can always close each end of the AL tube with wood and fill it with expandable foam to stiffen it up a bit.
Flew it a couple of times today. I would say it is no more than a 120 mph machine, Moves along just fine, but as some here suspected may be the case, the conclusion was that it is a bit too much airframe for the prop. Next time out I'll try something along the lines of a 7-5.. if it picks up airspeed then that would clinch it.