Above is a picture of a roughed out Flyer "WZ" frame designed to carry the Whizzer engine. Notice the deeper loop with tighter radius. We are really starting to push the limits of the tube bending equipment.
Here is a shot of two WZ Flyer frames and a Flyer Deluxe. The Flyer Deluxe is the non stretched baby loop for the Grubee engine. These frames still need the welded in engine mounts and a few other small details, not to mention a good cleaning.