#11
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rim notation
On 3/11/2018 11:24 AM, Emanuel Berg wrote:
AMuzi wrote: 3-spline sprockets are cheap and ubiquitous. They're 'quick change' in that the previous versions (mostly prewar) were all screw-on track sprockets. Standard format fits Sturmey, Shimano, SRAM-Sachs-F&S-Torpedo, Bendix, Durex, Centrix, and so on right down to $5 chinese child's coaster hubs. You can mix-n-match across brands and tooth count, change your gearing every morning if you like, sizes range 13t to 24t. Another thing I have thought about doing is to flip the sprocket which has an inclination and is facing inwards by design/default, but flipping it might be better than padding with spacers/washers to get a better chain line, if indeed it can be done without complications as I suspect it can? That is why sizes over 16t are offset, providing two positions. -- Andrew Muzi www.yellowjersey.org/ Open every day since 1 April, 1971 |
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#12
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rim notation
On 3/11/2018 12:24 PM, Emanuel Berg wrote:
AMuzi wrote: 3-spline sprockets are cheap and ubiquitous. They're 'quick change' in that the previous versions (mostly prewar) were all screw-on track sprockets. Standard format fits Sturmey, Shimano, SRAM-Sachs-F&S-Torpedo, Bendix, Durex, Centrix, and so on right down to $5 chinese child's coaster hubs. You can mix-n-match across brands and tooth count, change your gearing every morning if you like, sizes range 13t to 24t. Another thing I have thought about doing is to flip the sprocket which has an inclination and is facing inwards by design/default, but flipping it might be better than padding with spacers/washers to get a better chain line, if indeed it can be done without complications as I suspect it can? Emanuel, with all due respect, have you considered buying a book? -- - Frank Krygowski |
#13
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rim notation
Frank Krygowski wrote:
Emanuel, with all due respect, have you considered buying a book? These are the ones I have acquired or borrowed from the public library. The road bike books obviously don't cover the Torpedo rear hub, and the Swedish books are mechanically at a lower level than that, the Dutch one maybe covers it but I don't read the language - it has some good illos tho so I wouldn't rule it out. "Effective cycling" I gave up on as it was so boring to read with very few illustrations and a tiresome focus on policy/traffic issues which I can't influence anyway. @book{complete-road-bike-maintenance, author = {Guy Andrews}, ISBN = {978 1 4081 7093 9}, publisher = {Bloomsbury}, title = {Complete Road Bike Maintenance}, year = 2013 } @book{en-cyklo-pedi, author = {Johan Tell}, ISBN = {978-91-1-307337-8}, publisher = {Nordstedt}, title = {En cyklo pedi}, year = 2016 } @book{effective-cycling, author = {John Forester}, ISBN = {978-0-262-51694-5}, publisher = {Cambridge}, title = {Effective Cycling}, year = 2012 } @book{bike, author = {Daniel Benson and Richard Moore}, ISBN = 9781781312346, publisher = {Aurum}, title = {Bike! A Tribute to the World's Greatest Cycling Designers}, year = 2014 } @book{cykelbok, author = {Staffan Skott}, ISBN = {91-550-3942-1}, publisher = {Tiden}, title = {Cykelbok}, year = 1994 } @book{praktisch-fietsboek, author = {Rob van der Plas}, ISBN = {90 274 9848 2}, publisher = {Spectrum}, title = {Praktisch Fietsboek}, year = 1984 } -- underground experts united http://user.it.uu.se/~embe8573 |
#14
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rim notation
These are the ones I have acquired or
borrowed from the public library. The road bike books obviously don't cover the Torpedo rear hub Actually "Bike!" does have a section on Sturmey-Archer! However only some random cultural/historic notes, certainly no component-component tutorial... -- underground experts united http://user.it.uu.se/~embe8573 |
#15
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rim notation
Frank Krygowski wrote:
Emanuel, with all due respect, have you considered buying a book? Why don't you and Liebermann write one? AMuzi can then fill in the blanks using his own posts that are already written and John B. can finish the manuscript by providing one story per chapter under "Bike Lore" (with the letter O a spoked wheel), again just a matter of reusing posts from rec.bicycles.tech . I'm sure I'm forgetting someone here tho but that will only make the book even better when he joins as well. And yes, I promise to read it, instantly. -- underground experts united http://user.it.uu.se/~embe8573 |
#16
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rim notation
On 3/11/2018 11:55 PM, Emanuel Berg wrote:
Frank Krygowski wrote: Emanuel, with all due respect, have you considered buying a book? These are the ones I have acquired or borrowed from the public library. The road bike books obviously don't cover the Torpedo rear hub, and the Swedish books are mechanically at a lower level than that, the Dutch one maybe covers it but I don't read the language - it has some good illos tho so I wouldn't rule it out. "Effective cycling" I gave up on as it was so boring to read with very few illustrations and a tiresome focus on policy/traffic issues which I can't influence anyway. @book{complete-road-bike-maintenance, author = {Guy Andrews}, ISBN = {978 1 4081 7093 9}, publisher = {Bloomsbury}, title = {Complete Road Bike Maintenance}, year = 2013 } @book{en-cyklo-pedi, author = {Johan Tell}, ISBN = {978-91-1-307337-8}, publisher = {Nordstedt}, title = {En cyklo pedi}, year = 2016 } @book{effective-cycling, author = {John Forester}, ISBN = {978-0-262-51694-5}, publisher = {Cambridge}, title = {Effective Cycling}, year = 2012 } @book{bike, author = {Daniel Benson and Richard Moore}, ISBN = 9781781312346, publisher = {Aurum}, title = {Bike! A Tribute to the World's Greatest Cycling Designers}, year = 2014 } @book{cykelbok, author = {Staffan Skott}, ISBN = {91-550-3942-1}, publisher = {Tiden}, title = {Cykelbok}, year = 1994 } @book{praktisch-fietsboek, author = {Rob van der Plas}, ISBN = {90 274 9848 2}, publisher = {Spectrum}, title = {Praktisch Fietsboek}, year = 1984 } You might consider a review of basic principles and prior art besides consumer 'how to' books: https://www.alibris.com/booksearch?k...&hs.x=0&hs.y=0 -- Andrew Muzi www.yellowjersey.org/ Open every day since 1 April, 1971 |
#17
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rim notation
AMuzi wrote:
Standard format fits Sturmey, Shimano, SRAM-Sachs-F&S-Torpedo, Bendix, Durex, Centrix, and so on right down to $5 chinese child's coaster hubs. I have also come across a Swedish coaster hub called Nova which I'd place no later than the 1960s. Always when I see one it is spoked to the kind of "deep" rim which looks like the letter V and has a centerline of holes for the spokes at the bottom of the valley, also the rim has small brackets or oval washers between inside the rim and the spoke nipple heads, and those are common areas of corrosion (?) or other material loss of freshness. Next time I see one I'll examine if the sprocket is standard 3-spline on this hub as well... -- underground experts united http://user.it.uu.se/~embe8573 |
#18
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rim notation
On 3/12/2018 12:55 AM, Emanuel Berg wrote:
Frank Krygowski wrote: Emanuel, with all due respect, have you considered buying a book? These are the ones I have acquired or borrowed from the public library. The road bike books obviously don't cover the Torpedo rear hub, and the Swedish books are mechanically at a lower level than that, the Dutch one maybe covers it but I don't read the language - it has some good illos tho so I wouldn't rule it out. "Effective cycling" I gave up on as it was so boring to read with very few illustrations and a tiresome focus on policy/traffic issues which I can't influence anyway. @book{complete-road-bike-maintenance, author = {Guy Andrews}, ISBN = {978 1 4081 7093 9}, publisher = {Bloomsbury}, title = {Complete Road Bike Maintenance}, year = 2013 } @book{en-cyklo-pedi, author = {Johan Tell}, ISBN = {978-91-1-307337-8}, publisher = {Nordstedt}, title = {En cyklo pedi}, year = 2016 } @book{effective-cycling, author = {John Forester}, ISBN = {978-0-262-51694-5}, publisher = {Cambridge}, title = {Effective Cycling}, year = 2012 } @book{bike, author = {Daniel Benson and Richard Moore}, ISBN = 9781781312346, publisher = {Aurum}, title = {Bike! A Tribute to the World's Greatest Cycling Designers}, year = 2014 } @book{cykelbok, author = {Staffan Skott}, ISBN = {91-550-3942-1}, publisher = {Tiden}, title = {Cykelbok}, year = 1994 } @book{praktisch-fietsboek, author = {Rob van der Plas}, ISBN = {90 274 9848 2}, publisher = {Spectrum}, title = {Praktisch Fietsboek}, year = 1984 } I'm not familiar with most of those. Here are books that I have (all in English) that might help you. I have two Rob van der Plas books that seem appropriate for you. One is _Bicycle Technology_ from 1991. Another is _The Bicycle Repair Book_ from 1993. Both are published by Bicycle Books Inc., Mill Valley California. Both cover lots of basics and seem intended for novices. Unlike most modern books, these discuss things like coaster brakes, rod actuated brakes, 3 speed hubs, and more than the usual amount of basic mechanical practices. A similar approach is used in any of the various books by Richard Ballantine. Several of his books (_Richard's Bicycle Book_, _Richard's 21st Century Bicycle Book_ etc.) confine mechanical repairs to just the last short chapter, but he's also written _Richard's Bicycle Repair Manual_, which I don't own. I suspect it would be good for you. I've enjoyed his writing on other aspects of cycling. _The Big Blue Book of Bicycle Repair_ from Park Tools USA by C. Calvin Jones is good for modern sport bike components - at least, "modern" up to 2005, which is my edition. It won't be much help for coaster brakes brakes and utility bikes. I have a year 2000 edition of Leonard Zinn's _Zinn & the Art of Road Bike Maintenance_. It seems pretty good. I have others, even older, but I think those would serve you well. And as I've mentioned www.abebooks.com is a good and very inexpensive source of used books. I hope it, or a similar used book source, is available in your country Of course, I hope by now you've spent a lot of time at Sheldon Brown's site, http://www.sheldonbrown.com/ and you've used the Park Tool site's "Repair Help" section. https://www.parktool.com/blog/repair-help/ -- - Frank Krygowski |
#19
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rim notation
I have also come across a Swedish coaster hub
called Nova *Novo which I'd place no later than the 1960s. Always when I see one it is spoked to the kind of "deep" rim which looks like the letter V and has a centerline of holes for the spokes at the bottom of the valley What are the implication of this spoke/rim interface? Less lateral strength and more difficult to true the wheel? -- underground experts united http://user.it.uu.se/~embe8573 |
#20
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rim notation
Frank Krygowski wrote:
I'm not familiar with most of those. Here are books that I have (all in English) that might help you [...] Excellent, I'll return to this when I acquire/read them, God willing. -- underground experts united http://user.it.uu.se/~embe8573 |
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