On Apr 26, 9:21 am, Ken Yokanovich <reflector.collec...@gmail.com> wrote: > > I had been riding my 60cm custom All-Rounder with 700x35 Pasela TG > tires. Since more permanently mounting a Schmidt dynamo hub and > light, something caused the front end handling to be a bit off. At > 10-15 mph I'd get a "shimmy" or wobble, no handed was not an option.
Where/how did you "more permanently" mount the head lamp? On a front rack, perhaps? > I mounted some Jack Brown 700x33.3 tires and the handling issue was > dramatically reduced. (Not entirely gone.) If I use a standard wheel > the bike handles wonderfully. (Yes, the Schmidt wheel is true, > dished, and tension balanced.) When you switch to a standard wheel, do you also leave that head lamp in place? Your tire-changing experiences parallel mine. I had 700x35 (non TG) Paselas on my bike, and riding no-handed at <20mph speeds wasn't an option due to shimmy. Additionally, I'd get a speed wobble over about 35mph. Switching to 700x32 Paselas (TG -- only because that's what was available at my LBS) has drastically improved those problems (low speed shimmy hugely reduced, high-speed wobble now gone). Jobst Brandt has written that heavy wheels/tires on a lightweight, flexible frame may lead to increased risk of these types of problems. I think wheel-weight is a significant factor. The issue with your Schmidt hub+wheel causing shimmy is, however, _very_ perplexing! -Jim G --~--~---------~--~----~------------~-------~--~----~ You received this message because you are subscribed to the Google Groups "RBW Owners Bunch" group. To post to this group, send email to rbw-owners-bunch@googlegroups.com To unsubscribe from this group, send email to rbw-owners-bunch+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/rbw-owners-bunch?hl=en -~----------~----~----~----~------~----~------~--~---
