tag:blogger.com,1999:blog-3181898885729037877.post1285593410489867750..comments2023-10-20T07:00:53.827-07:00Comments on Vélo Vogue: chainless wonderKristin Tiechehttp://www.blogger.com/profile/10847043996015177460noreply@blogger.comBlogger6125tag:blogger.com,1999:blog-3181898885729037877.post-32569875433432140722011-06-19T18:17:00.410-07:002011-06-19T18:17:00.410-07:00I used to have a biomega like that. I kinda miss i...I used to have a biomega like that. I kinda miss it. If I ever go back up over 20 bikes in my coral again I'll probably have to include another.Cosmohttps://www.blogger.com/profile/08364487305473753277noreply@blogger.comtag:blogger.com,1999:blog-3181898885729037877.post-8334550881350164262011-06-18T14:30:49.502-07:002011-06-18T14:30:49.502-07:00http://www.nostalgic.net/bicycle649.htm
Superbly ...http://www.nostalgic.net/bicycle649.htm<br /><br />Superbly made, very pretty, but even then it was known these were items for people who like "nice" things, can afford them, but don't actually ride much.<br /><br />The limitations of the system are not technical, but inherent in the way bicycles transmit torque to the rear wheel and the laws of physics.<br /><br />We can improve metals and we can improve tolerances, but we canna change the laws of physics, Cap'n.kfgnoreply@blogger.comtag:blogger.com,1999:blog-3181898885729037877.post-25081975945247129852011-06-18T01:18:19.650-07:002011-06-18T01:18:19.650-07:00Thanks for your extensive research. I will check o...Thanks for your extensive research. I will check out your links for sure!<br /><br />:-)<br /><br />Sticking with my 1979 mixte for the time being...Kristin Tiechehttps://www.blogger.com/profile/10847043996015177460noreply@blogger.comtag:blogger.com,1999:blog-3181898885729037877.post-80652758336876609582011-06-18T01:01:06.878-07:002011-06-18T01:01:06.878-07:00Kristin,
I do recall reading a review that comme...Kristin, <br /><br />I do recall reading a review that commented unfavourably about shaft-drive efficiency, but I can't locate it. I am also unable to provide objective evidence about the efficiency of shaft-drives.<br />Bearing in-mind the inherent limitations of muscle power, inefficiency is akin to cycling with under-inflated tyres, or the brakes rubbing.<br /><br />David Hembrow thinks they're inefficient and he's tried at least two, possibly more.<br />http://www.bakfiets-en-meer.nl/2009/07/30/unclear-on-the-concept-2/#comment-2314<br /><br />Henry at Workcycles doesn't like them either.<br />http://www.bakfiets-en-meer.nl/2009/07/30/unclear-on-the-concept-2/#comment-2315<br /><br />This is verifiable:<br />They are more expensive and heavier. <br />They have their own disadvantages, like requiring special hubs and difficulty in removing the rear wheel.<br />They really do not have much to offer over hub gears and a full chaincase.<br /><br />My assessment is: If you have the money and either don't cycle much, or just simply must have one, go for it. If it works out well, well, great! Then write a positive review. But I didn't find any. However that doesn't mean they're universally bad.<br />Otherwise, read Sheldon Brown<br />http://www.sheldonbrown.com/gloss_sa-o.html#shaft<br />and Wikipedia<br />and make a more informed choice.<br /><br />I must admit, I find it hard to take Biomega seriously. IIRC they have a history of questionable design. The second says everything one needs to know.<br /><br />http://www.copenhagenize.com/2010/09/pumabiomega-mopion-cargo-bike.html<br />and more here<br />http://www.bakfiets-en-meer.nl/2010/09/24/e-urobike-2010-same-stuff-new-colors/amoebahttps://www.blogger.com/profile/15783694650121687459noreply@blogger.comtag:blogger.com,1999:blog-3181898885729037877.post-64532116580376335962011-06-17T10:21:34.567-07:002011-06-17T10:21:34.567-07:00Why are they found to be inefficient? What exactly...Why are they found to be inefficient? What exactly do you mean by that?Kristin Tiechehttps://www.blogger.com/profile/10847043996015177460noreply@blogger.comtag:blogger.com,1999:blog-3181898885729037877.post-18638256066414891762011-06-17T10:02:20.783-07:002011-06-17T10:02:20.783-07:00I've never seen a shaft-drive bike, let alone ...I've never seen a shaft-drive bike, let alone ridden one.<br /><br />When I first heard of them, I was initially very interested, but a little research indicated that they were pretty inefficient and that such designs are not really 'new', they come and go, like many 'new' ideas in the bike-world. Whether this will happen to the Biomega version, I have no idea, but I'm not hopeful.<br /><br />The problem is that the parts are design-specific and if the design doesn't take-off, unlikely because of efficiency, it's likely to disappear and then spares soon dry-up. The bikes then become irreparable.<br /><br />Sad, but most probably true. :<(amoebahttps://www.blogger.com/profile/15783694650121687459noreply@blogger.com