Jon Nygren's Streetliners


Jon brought us up to date on the street streamliner experiments he has been doing with Dave, Lance, et al. First he showed one of his bare aluminum bikes so we would know what is inside his latest shell. It has his usual aluminum beam frame with a long rear swingarm. Plus a BMX fork for full suspension, which he considers essential for a fast street bike. The second bike he showed was a liner with a blown nose cone, coroplast sides, and a windscreen wrapped around one of Dave's bikes.


The third bike is a fiberglass shell made on the heavy male mold the guys built (in only about nine months!) to do vacuum molded plastic shells on. After the first molding experiment went badly they repaired the mold and have made several conventional composite shells from it using fiberglass (Jon and Lance) and Kevlar (Dave K). You too can have one from the materials they have left over for a mere $500 or so. They make the shells in two halves, bond them together, then start cutting holes for bomb bay doors access hatches, windscreens, etc.



Jon also plans to use this shell, or one like it, on his leanable delta trike. It made a lot of oil-canning noise at first, but added aluminum braces improved that. He cruises 22-23 mph on the faster part of the Cedar Lake trail with fairly easy sprints to 30-35 mph, which Nick Demma figures is noticeably faster than his bike fabric faired streetliner because of a better and smaller shape. Jon uses a large flashing light inside a translucent rear turtle deck, which makes the whole back of the bike glow at night.



It is awkward in terms of limited steering lock for slow speeds, mastering the duck-footed stance at stops to get adequate bracing to stay upright, etc. It can be quite warm inside, so Jon added a NACA duct in front of the windscreen plus a tiltable deflector on the top edge of the windscreen.



This bike is currently very hard to get in and out of - requiring a lamppost or a very tall helper to lean on! - Since Jon hasn't worked out exactly how he wants to do the side hatch with adequate bracing of the hatch itself and the remainder of the shell.


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