tag:blogger.com,1999:blog-36151678.post2040927011298078493..comments2024-03-26T04:02:22.355-07:00Comments on Waltworks Bicycles: Alignment vs. symmetryWalthttp://www.blogger.com/profile/09156620599767391579noreply@blogger.comBlogger3125tag:blogger.com,1999:blog-36151678.post-42993579864687581562009-06-07T09:04:02.839-07:002009-06-07T09:04:02.839-07:00"I must stress that you should not go over th..."I must stress that you should not go over the top when 'dimensioning' frames. There are limits of sensibility and most frame builders know where they lie.... A good engineer is one who understands the relevance of each decision and its importance within the final requirement. The fact that our bodies are tolerant of many dimensional inaccuracies and only a few aspects of frame building are actually very important... these are: accurate tube mitering, complete and safe brazing (welding), and the back wheel perfectly following the front.... I believe in attempting to get it right but...it is equally important not to forget the engineering reality of frame building; it is a process of fabrication worlds apart from the micrometers of machining."<br /><br />-Tony Oliver (Old-School British Frame Builder)<br />From "Touring Bikes: A Practical Guide"Bradley Wilsonhttps://www.blogger.com/profile/12032820122524396507noreply@blogger.comtag:blogger.com,1999:blog-36151678.post-34313331879489101112009-06-03T20:36:25.943-07:002009-06-03T20:36:25.943-07:00Awesome Walt, you're getting Spamed.
In Bicyc...Awesome Walt, you're getting Spamed.<br /><br />In Bicycle Guide magazine probably close to 20 years ago now there was the exact same kinda write-up on frame alignment. The gist is that the systems in place (sequential welding, alignment of tubes etc) when carried out correctly product a 'straight enough' frame the vast majority of the time. Any 'cold working' you do post welding should not be carried out like a dog chasing it's tail because you end up compromising the structure. The cold working is essentially just attempting to minimise the effect of any anomalies in the materials as they heat and contract during welding, as well as the influence of the mechanical interface of the tubes upon eachother.<br /><br />What I got out of that article is essentially the same as I get out of discussion to this day - be as accurate as you can, mess with the frame as little as possible after it's welded, and only let it out the door if you can sleep at night.<br /><br />Cheers for clearing up the difference for everyone between 'alignment' and 'symmetry', too. I hate to say it, but I certainly hope 'Alignment' is not the next buzzword after 'Lightweight' and 'Stiffness'.<br /><br />Oh, and 'Vertically compliant, laterally stiff'. ;)Thylacinenoreply@blogger.comtag:blogger.com,1999:blog-36151678.post-67724267142239896592009-06-03T14:59:58.534-07:002009-06-03T14:59:58.534-07:00Hi Walt,
Very informative post. Thanks for sharin...Hi Walt,<br /><br />Very informative post. Thanks for sharing.<br /><br />I'm Hua, the director of Wellsphere's HealthBlogger Network, a network of over 2,000 of the best health writers on the web (including doctors, nurses, healthy living professionals, and expert patients). I think your blog would be a great addition to the Network, and I'd like to invite you to learn more about it and apply to join at http://www.wellsphere.com/health-blogger. Once approved by our Chief Medical Officer, your posts will be republished on Wellsphere where they will be available to over 5 million monthly visitors who come to the site looking for health information and support. There’s no cost and no extra work for you! The HealthBlogger page (http://www.wellsphere.com/health-blogger) provides details about participation, but if you have any questions please feel free to email me at hua@wellsphere.com.<br /><br />Best,<br />HuaHuahttps://www.blogger.com/profile/04703549526338294520noreply@blogger.com