The website does not intend to compeed with any other website dealing with 2stroke tuning, and the information shared is not at all as thorough as what you can get from reading the books. Graham bell second edition this is the moped performance tuning bible as far as im concerned. Undoubtedly, the virtue which has most contributed to the widespread use and varied application of the twostroke engine is its mechanical simplicity. Graham bell author of fourstroke performance tuning.
Other books to his credit are modern engine tuning, twostroke performance tuning and forced induction performance tuning. As the title implies, this is not a book specific on ecus. Drawing on his practical experience in tuning and modifying high performance road, rally and race units, it sets out in detail the many prionciples involved in tuning four stroke engines. However, it does contain a chapter on ecus and how they work. I have the book, but its nice to have as a pdf as well and a good reference for those who dont know about it. All areas of engine operation are explained and analysed, from air and fuel, through carburation, ignition, cylinders, porting, reed and rotary valves and exhaust systems to cooling. Fully revised this book takes the reader through the various modifications that can be made to a twostroke engine and its components to give maximum useable power output and mechanical reliability. Other books to his credit are modern engine tuning, twostroke. Buy twostroke performance tuning 2nd revised edition by bell, a. Graham bell explains and analyses every aspect of an engines operation in this illustrated book.
Other books to his credit are modern engine tuning, two stroke performance tuning and forced induction performance tuning. The piston crown opens and closes the exhaust and transfer ports. The inlet port opens 30 after bdc and closes 79 after tdc. The formulas on this page were taken from fourstroke performance tuning by a graham bell. Direct link four stroke performance tuning 3rd ed a graham bell. Im the engine and drivetrain design lead for my formula sae team so i have a lot of new members asking me how to learn more about engines so they can get involved with the technical parts of design.
My dad paid me pocket money to take the formulas and make them into a program on our sinclair spectrum, then our amstrad pcw8512 and then into java you see here. Like the quote graham bell on the first page of the book twostroke performance tuning essay, modifications and workmanship that is too excessive bore up, ported too wide high can be painful precisely because the results are far from expectations. I usually recommend this book along with gordon jennings two stroke tuners handbook, because this. Graham bell is an acknowledged expert on engine tuning, with many years. About this title may belong to another edition of this title. Bells fourstroke performance tuning book, this book goes into extreme detail regarding performance tuning a twostroke engine. Lets journey back to 1973 and read the book that was the two stroke bible of that era. Two stroke performance tuning a disc partially cut away and attached to the end of the crankshaft opens and closes an inlet port in the side of the crankcase. Other books to his credit are modern engine tuning, two. Bells four stroke performance tuning book, this book goes into extreme detail regarding performance tuning a two stroke engine.
Graham bell is an acknowledged expert on engine tuning, with many years experience in this field. Graeme bells book is really informative, fair bit of stuff that relates to all 2ts but he is a big fan of tuning a pipe to get the characteristics he wants from a 2t which is not an option for the work saw builder. To familiarize yourself with two stroke engine tuning, read the two stroke tuners handbook by gordon jennings as well as twostroke performance tuning by a. Four stroke performance tuning 3rd ed a graham bell free ebook download as pdf file. The morbidelli 125 twin road racer is a rotary valve engine. Fourstroke performance tuning having read the two books by greg banish on ecu calibration, i found some links to a book by a. Graham bell starts off by saying that he doesnt believe port time area and its all about the duration the ports are open. Fourstroke performance tuning 4th edition by graham bell. Four stroke performance tuning 3rd ed a graham bell. This revised and substantially expanded fourth edition incorporates new information covering the adoption in recent years of fingerfollower cam follower arrangements on ohc and dohc engines, and the tuning implications of recent developments in fuel and oil technology. A slightly better scanned version of the jennings handbook may be found here. Fourstroke performance tuning, a book by graham bell.
Drawing on his practical experience in tuning and modifying highperformance road, rally and race units, it sets out in detail the many prionciples involved in tuning fourstroke engines. A narrow port reduced power but improved reliability. Two stroke performance tuning back in europe twostroke engineers were battling excessive ring and cylinder wear, due to the exhaust port width being too great. Youll get noticeable power improvement on most mopeds by the following performance.
Graham bell steers you through the various modifications that can be made to coax maximum useable power output. There is a huge interest in vintage snowmobiles and their simple two stroke power plants of yesteryear. Graham bell is the author of twostroke performance tuning 4. Graham bell is the author of two stroke performance tuning 4. There is a wealth of knowledge contained in this manual. An introduction to twostroke tuning the cylinder head porting and cylinder scavenging the exhaust system carburation ignition the bottom end lubrication and cooling power measurement and gearing.
The 2 stroke tuners handbook outdoor power equipment forum. The book was published 25 years ago and is still published. Decades have passed since i hung around with john and jim. I usually recommend this book along with gordon jennings two stroke tuners handbook, because this book has what the first one doesnt and vice versa.1401 106 879 1548 1344 619 1025 684 225 692 1053 292 1468 1042 1302 792 1440 1071 839 754 1429 499 1499 290 487 294 1297 1059 899 1292 703 300 642 450 1317