From:
"Ian Sims" ian@greenspeed.com.auSubject: [trikes] Fw: New information on Sturmey-Archer
I received this email, which I found quite interesting, so I'm passing it on.
Our website continues to grow and now carries more than 40 cycling-related articles, including material from notable guest authors. The BBC recently allowed us to upload an archive radio interview about early Moultons and yesterday we uploaded a considerable amount of additional technical information on Sturmey-Archer hubs.
The Sturmey material comes from English engineer and hub-gear enthusiast Jim Gill, who for 25 years has been disassembling, measuring, comparing and analysing hubs. The majority of the material is Jim's own and has never been published before. It covers virtually every Sturmey hub ever produced (plus BSA) and would enable a skilled machinist to replicate missing parts from old hubs. The material includes: a.. 21 pages of hub gear theory. b.. 14 pages of reference tables, including dimensioned drawings of pawls, drivers, axle keys, gear teeth, ballcups, hub shells and indicators. c.. 26 pages of dimensioned axle drawings. d.. 7 pages of cone charts. e.. 5 pages of spring charts. f.. 5 pages of dimensioned trigger drawings, including how to convert triggers for use with fixed wheel hubs. Pages can be printed out individually and you can zoom in fro greater clarity. Although the pages you see are scanned images, 'behind' them the text has been OCR'd, enabling electronic searching.
Please copy this e-mail to anyone you think might be interested in this material. Please note also that we now take credit and debit card orders for our books, CDs and videos. Apart from 'The Sturmey-Archer Story', we can supply other books that we have written or edited, including the new Mike Burrows book 'Bicycle Design', the two Moulton books, Arnfried Schmitz's 'Human Power', and the first book in English on portable cycles, 'It's in the bag!' Plus the Lauterwasser and Roberts videos and the Duffield CD.
It's the book and video sales that enable us to finance the 'free' material on the site, so we welcome your orders, whether you are a trade or retail customer, in the UK or overseas. We would greatly appreciate any mentions in editorial or in discussion groups. And please feel free to link to our website from your own.
Happy epicycling! Tony A.J. Hadland trading as HADLAND BOOKS