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The Rupert Ratio Unit Single Engine Manual for BSA C15, B40, B25, B44, B50 Paperback – 1 Jan 2000

4.8 out of 5 stars 28 customer reviews

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Product details

  • Paperback: 267 pages
  • Publisher: Panther Publishing Ltd (1 Jan. 2000)
  • Language: English
  • ISBN-10: 0953509818
  • ISBN-13: 978-0953509812
  • Product Dimensions: 17 x 1.3 x 25 cm
  • Average Customer Review: 4.8 out of 5 stars  See all reviews (28 customer reviews)
  • Amazon Bestsellers Rank: 593,021 in Books (See Top 100 in Books)
  • See Complete Table of Contents

Customer Reviews

4.8 out of 5 stars
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Top Customer Reviews

Format: Paperback
The key to enjoying your C15/B25, or your more robust B44 or B50, is to understand its limitations: both those dictated by design and those inflicted by age. Author Rupert Ratio (a.k.a. English design technology instructor Dave Smith) captures this up in his wonderful recent book, The Rupert Ratio Unit Single Engine Manual for BSA when he writes, "In owning one of more of the BSA Unit Singles, the approach which best promotes a trouble free and rewarding coexistence can best be summed up by the maxim:
Put it together properly, Look after it properly, Warm it up properly, Exercise it properly! But, accept its performance limitations - it isn't a big parallel twin, and it isn't Japanese!"
And, a wonderful and unique book it is, indeed. Smith has concocted a recipe of 1 cup shop manual, one cup restoration guide, a half cup of factory service tips, heavily seasoned the mix with suggestions based on personal experience, and sprinkled liberally with the philosophies of a long-time rider, and cooked up an equally tasty and nutritious dish for anyone who owns a Beezer unit single. The Unit Single manual starts with brief history of the machines, and then proceeds to chapters on rebuilding each element of the bikes' electrical and mechanical systems. (Note that the operative words in the title are "Engine Manual" - the book does not explore brakes, frame, wheels, etc.). Each chapter includes selections from dealer service sheets and the factory's and author's illustrations.
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Format: Paperback
A short and sweet review. This book tells you everything you want to know about your engine. It is clear, well written and full of excellent diagrams. It has technical and tuning tips for the more advanced BSA owner and stacks of useful help and advice for those new to the engine. This book is easy to read, at times amusing and will last longer than Old Bike Mart. You can't go wrong.
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Format: Paperback
I've ridden a Starfire year round for 29 years and know it inside out. As
such I wasn't expecting this book to tell me anything new. But because it
has such a good reputation I bought a copy to see what the fuss was all
about. To my delight, it suggested checking a couple of things that in all
those years just simply hadn't occurred to me. And I'm confident they will
lead to better oil-tightness.

That's what this book is all about. It is a thorough and complete reference
and you are told everything to look out for and check - things that are
important but are not always obvious. It concentrates solely on the engine
which is a good thing as it is given the chance to be covered in sufficient
detail. Even if you are very familiar with unit singles and already have a (genuine BSA is preferable) workshop manual and parts book, it is still likely to be of help. If new to them, then don't hesitate - buy this book!

All credit to the effort the author has put into this book which quite
clearly reflects careful study and many, many hours in the workshop and out
riding on the road. An excellent book - 10 out of 10
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Format: Paperback
As this book is restricted to the engine only you will need other books to cover the cycle parts, but for the engine no other book is required. If only other books were published on other engines with the same level of detail and knowledge.
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Format: Paperback Verified Purchase
Good tips on keeping engines oil tight and prolonging their life! A good reference, I found out the different types of primary chain cases and what models they were fitted to. Very well written and put together.
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Format: Paperback Verified Purchase
This book is written by someone who is probably the authority on BSA unit singles. It is not a Haynes style manual and does expect you to understand certain engineering principles (for example, it might say remove the head bolts - it does not give blow by blow photos) but concentrates instead on what might go wrong. Every special tool is described and often instructions are given on making your own (though only if you have access to a workshop). He also offers side of the road bodges when possible (or someone working on a tight budget). Tuning tips abound as long as you are brave enough to try them as they often involve metal removal so permanent.

If you are a fairly confident home mechanic then this book is perfect. It is also an interesting book just to read.

Shame it does not come with a BSA single to work on!
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Format: Paperback
Having owned and repaired a couple of C15's in the distant past I bought this initially as a refresher.The book exceeded all my expectations being far better than any workshop manual.It's easy to assimulate detail on all engine variations coupled with the authors tips and experiences make this the most complete engine manual I have ever read.As long as you remember that this is an engine manual and does not contain information on the care and maintenance of cycle parts you will not be dissapointed.Highly reccomended!
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