on 5/27/09 9:27 AM, zrainryder at zdree...@gmail.com wrote: > > Upon the last 10 miles of a 3 day excursion with quite a bit of > climbing, my bike emitted a loud sound that sounded like an elephant > mating call. At first I thought it was the front wheel. The bike > makes the sound when going 15 mph+ and when coasting or when pedaling > backwards at that speed. Otherwise it sounds serendipitously. I now > suspect that the cause is in the bottom bracket. I'm using Sugino > cranks with a Tange bottom bracket which has around 5,000 miles on > it. I have not performed service to it of any kind. Any thoughts or > suggestions will be appreciated. Thanks, Chris.
Not sure what a elephant mating call would sound like as voiced by a bicycle. If it's making the sound while coasting, it is unlikely to be a bottom bracket issue. I would start by removing the rear wheel and checking the play in the freehub and axle. Then remove pedals and regrease threads. Bottom brackets can emit sounds from the bearings, or if the grease melts out of the threads, you'll get a metal/metal contact squawk. But, you would only hear that when you apply pressure on the pedals. I'm just starting to get that type of sound on my Quickbeam, but it's only on steeper hills while pushing hard out of the saddle. Typically, that is easily silenced by removal and regreasing the threads. hope that helps, - J -- Jim Edgar cyclofi...@earthlink.net Cyclofiend Bicycle Photo Galleries - http://www.cyclofiend.com Current Classics - Cross Bikes Singlespeed - Working Bikes Send In Your Photos! - Here's how: http://www.cyclofiend.com/guidelines "That which is overdesigned, too highly specific, anticipates outcome; the anticipation of outcome guarantees, if not failure, the absence of grace." William Gibson - "All Tomorrow's Parties" --~--~---------~--~----~------------~-------~--~----~ 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 -~----------~----~----~----~------~----~------~--~---
