[Rick TYler]

Your serpentine S-shaped launcher is the same one my son and I prototyped as a proposal for our team. Glad to see someone is using it -- I think (*cough* modestly *cough*) it's a great design. We actually used small serpentine wheels (2-1/2 inches) and had a 3-curve design with three wheels. Nicely done, although the video makes it look like your launch velocity is well over 12 m/sec (distances are hard to judge in tiny videos). Really nice job.