RE: dle 20 break in
I wish biela made a prop in that size, but they start at a 16" in the three blades. I like the smoothness of the three blade. The only issue I had was getting the jam nut tight enough to keep the propblades off of the spinner cone. I ended up cutting two discs of emory cloth with holes in the middle to put between the spinner back plate and thedrive washer, and the prop and spinner back plate. This gave enough bite to keep the prop locked to the spinner backplate, and the spinner back plate locked to the drive washer with everything tight.
I'll bet the kit version is stronger than the ARF. I wish I had the time to build, the Skybolt is such a nice airframe. There is a kit cutter in Camden, SC who wants to make a Skybolt kit at 50-80cc size if he can get a set of plans to re-scale. That would be a plane I'd make time to build. Please post some pictures when you get it put together.
Thanks,
Byron