Caproni? Didn't they make jet engines? Seems like I remember seeing one in a BD5J. But that was eons ago could be wrong. Today was chain guard day. This should please you L2. You chided me once for a lack of one on an earlier build. I complied this time. Wisdom comes with age. Both guards will get a final trimming when removed for paint. I also made the clutch "spinner" from a 6" mixing bowl I finally convinced my wife to part with--that's another story. Took quite a while to whittle the bowl to fit. If I can get it perfectly centered(its very close) it will appear still(or nearly so) at idle. I can polish it by putting my jeans against it while riding. Easy maintenance. Swapped the long threaded 1/2" exhaust stub for a close nipple, exhaust fits better. In the interest of being a model citizen I will add the common Briggs "hot dog" muffler to the end of the pipe. The pipe gets precious close to where the wires exit the battery tube, the fault of building in the wrong order. If that's the biggest issue with this build I'm home free. The word Pirouline is embossed in the battery tubes end. I will relate to on lookers that its a high end French racing oil.