We offer a comprehensive range or motorcycle tuning services. Feb 26, 2017 motorcycle tuning chassis by john robinson this is a great book for the racers, as the focus really is making motorcycles go fast around corners. The morbidelli 125 twin road racer is a rotary valve engine. 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. Two stroke performance tuning chapter 3 porting and cylinder scavenging today, when we take a look down the cylinder of a twostroke engine, we find its walls literally filled with ports to handle the induction, transfer and exhaust phases of gas flow through the engine. Twostroke engines making comeback motorbike writer. Turbo and even supercharger setups of various configurations can be very useful, however, they are often more complicated with 2 stroke tuning than with 4 stroke applications on a tangent, i did witness a 50cc turbo 2 stroke bike that would do over 150mph, but i digress.
A twostroke engine performs all the same steps, but in just two piston strokes. Motor cycle tuning twostroke by robinson, john, 1994, newnes edition, in english 2nd ed. It happens, on conventional machines, at something in the region of 2 to 4 fts 1. Learn howto repair and maintain your own motorcycle. Whist we specialise in honda 2 strokes and vees, we perform tuning on all marques and models. Two stroke performance tuning chapter 3 porting and cylinder scavenging today, when we take a look down the cylinder of a two stroke engine, we find its walls literally filled with ports to handle the induction, transfer and exhaust phases of gas flow through the engine. The simplest twostroke engines do this by using the crankcase and. I am very proud of the riders i helped and sponsored and there is an appendix. Jan 14, 2012 porting your 2 stroke motorized bicycle engine. There is quite a large section on changing the face of production racing and into the marlboro series and the lc era and through the kr1s and rgv eras. It covers my early days in the motorcycle trade, on to starting my own mc business then forming my tuning business. Books you can find a pdf copy of jennings book here the internal.
Geoff batticks notes on 2 stroke engine modification. The high performance two stroke engine by john dixon is also very good. If you have a race bike, or are building one, id recommend you add it to your collection. Decades have passed since i hung around with john and jim. Aug 17, 2015 ten motorcycles that remind us why we miss twostrokes. Vp110 is a good, allaround fuel for hoppedup twostroke engines. Ten motorcycles that remind us why we miss twostrokes. Most parameters are uncontroversial and claims made by manufacturers are generally accepted without verification. The way a two stroke motor works causes them to be f. Buy motorcycle tuning twostroke by john robinson with free. Be assured that teachers, industry representatives, and various others have been involved to make this publication usable, readable, and by all means basic enough to be easily used.
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. Everyday low prices and free delivery on eligible orders. The mechanical simplicity of the two stroke engine gives it tremendous appeal, and makes it a tempting target for tuning operations, but the key to successful design, development and modification. John robinson, haynes the chevrolet racing engine another book. Bigger carburetors, higher compression ratios, altered port timings and expansion. The author is technical editor of performance bikes and author of the well known motorcycle tuning books. Motorcycle tuning twostroke 1994 edition open library. Twostroke engine repair and maintenance by paul dempsey paperback from mcgrawhill professional. If only some older roadgoing 2strokes had the benefit of improved engine. Buy motorcycle tuning twostroke by john robinson with. Velosolex s 3800 2stroke tuning and engine design books.
Geoff batticks notes on 2 stroke engine modification saltmine. Road and race performance the midlands premier motorcycle. Graham bells two stroke performance tuning is the book to have. Piston and bottom end lubrication may still require an oil mist which is not at all catcoverter friendly. Graham bell yes 0854293299 motorcycle tuningtwo stroke john robinson yes 0434917419 motorcross and offroad motorcycle performance handbook eric gorr yes 0760302448. Pdf two stroke motorcycle engine maintenance and repair. Contents chapter 1 introduction 9 chapter 2 the cylinder.
There is no recommendation for road tuning at high engine speeds. Whist we specialise in honda 2strokes and vees, we. Pilot airfuel screw adjustment explained multiple carbs. There are many ways to boost the power, one of which is by installing a tuned pipe. Buy motorcycle tuning twostroke by john robinson from waterstones today.
Lecture 2 two stroke and four stroke engines, working principles, applications types, power and efficiency heat engine is a machine for converting heat, developed by burning fuel into useful work. Chassis by john robinson for free with a 30 day free trial. Excellent condition my kids only road the bikes only several times. Motorcycle tuning chassis by john robinson this is a great book for the racers, as the focus really is making motorcycles go fast around corners.
Feb 05, 2019 learn howto repair and maintain your own motorcycle. Performance engineering 2 stroke tuning we specialise in honda 2 strokes, covering the cr range of motorcross bikes, the nsr250 street bikes, and hrc grand prix 125, 250, and 500s. Download yamaha two stroke production roadracing motorcycles. Mxa mixes vp110 with pump gas for use in slightly modified twostroke engines in. A well jetted 2 stroke using a high quality synthetic oil will have evidence of oil at the rear of the exhaust system. Motorcycle tuning twostroke by john robinson goodreads. The two stroke engine is widely used for competitions in both motorcycle racing and kart racing, and in very large numbers in model car, boat and aircraft competition. At performance fabrications we offer specialist and dedicated 2 stroke servicing and parts, we recommend this as 2 strokes can be more unreliable than 4strokes if not properly maintained, with the majority of 2 stroke motorcycles now aging it can be important to keep the entire motorcycle fresh to avoid any damage to the engine or other components.
Explore 484 listings for two stroke motorcycles for sale uk at best prices. They are so simple and fun that ive always enjoyed tinkering with them. Performance engineering motorcycle tuning services. I still have a yamaha 2 stroke motor scooter that is a lot of fun to ride and extremely easy. Graham bell yes 0854293299 motorcycle tuningtwo stroke john robinson yes 0434917419 motorcross and offroad motorcycle performance handbook. Technical guide for constructors volumes 1 and 2 john bradley for. Motorcycle tuning twostroke by john robinson waterstones. Still its nice to see 2strokes still being improved. The ktm sounds like it is a conventional 2stroke we know and love but with fuel injection tacked on. Motorcyle tuning by john robinson overdrive rakuten.
Motor cycle tuning twostroke, john robinson, 1994, transportation, 169 pages. It can be said that heat engine is equipment which generates thermal. The great attraction of the twostroke is its enormous potential, contrasted with its. The aim of this guide is to give some practical advice on building an mz250 for racing. Pdf motorcycle tuning two stroke download full pdf. Motor cycle tuning two stroke by robinson, john, 1994, newnes edition, in english 2nd ed. Kop motorcycle tuning twostroke av john robinson pa. Performance engineering 2stroke tuning we specialise in honda 2strokes, covering the cr range of motorcross bikes, the nsr250 street bikes, and hrc grand prix 125, 250, and 500s. Find all the books, read about the author, and more. The short duration recommendation applies to rr tuning since it run with stronger pulses. The inlet port opens 30 after bdc and closes 79 after tdc.
The theory and practice isbn 085045560x good discussions of steering geometry and chassis design, with interesting practical experiments tony foale and vic willougbhy. Lets journey back to 1973 and read the book that was the two stroke bible of that era. Hello select your address best sellers todays deals new releases todays deals new releases. The regulations for 2002 season are used as a guideline. Get free shipping on motorcycle tuning twostroke by john robinson, from.
Yamaha all factory and production roadracing twostrokes from 1955 to 1993, colin mackellar, 1995, 191 pages. Basic 2 stroke tuning changing the power band of your dirt bike engine is simple when you know the basics. For rr tuning the crankcase and ports are assumed to be state of the art. It is not intended as a tuning reference so the settings and timings are for example only, but. A myriad of different aftermarket accessories is available for you to custom tune your bike to better suit your needs. This third edition, in the same tradition as the second, is a vital servicing tool containing information covering virtually every motorcycle over 50cc sold in the uk since 1980. I still have a yamaha 2 stroke motor scooter that is. At performance fabrications we offer specialist and dedicated 2stroke servicing and parts, we recommend this as 2strokes can be more unreliable than 4strokes if not properly maintained, with the majority of 2stroke motorcycles now aging it can be important to keep the entire motorcycle fresh to avoid any damage to the engine or other components. Apr 06, 2015 a two stroke engine performs all the same steps, but in just two piston strokes. There is a huge interest in vintage snowmobiles and their simple two stroke power plants of yesteryear. A technical guide for constructors volumes 1 and 2 john bradley for more info on this book at john bradleys site motorcycle chassis design. Motorcycle testing and measurement includes a range of more than two dozen statistics giving the specifications of the motorcycle, and the actual performance, expressed by such things as the output of the engine, and the top speed or acceleration of the motorcycle. Lectron install 2 stroke tuning, adjusting metering rod, and idle.
Two stroke tuners handbook 2 another mistake commonly made, sometimes even by those who have enjoyed some success in modifying twostroke engines, is to believe in a kind of mechanistic magic. The mechanical simplicity of the twostroke engine gives it tremendous appeal, and makes it a tempting target for tuning operations, but the key to successful design, development. The only time that it will be clean is under constant high load situations such as an expert level rider on a sand track where the exhaust system can. The most common mistake is to choose the wrong combination of engine components, making the engine run worse than stock. The two stroke engine is widely used in both motorcycle racing and kart racing, and in very large numbers in model car, boat and aircraft competition. Yamaha two stroke production roadracing motorcycles.
The piston crown opens and closes the exhaust and transfer ports. The twostroke engine is widely used for competitions in both motorcycle racing and kart racing, and in very large numbers in model car, boat and aircraft competition. The mechanical simplicity of the two stroke engine gives it tremendous appeal, and makes it a tempting target for tuning operations, but the key to successful design, development. Click and collect from your local waterstones or get free uk delivery on orders over. Holistic guide for firsttime bike owners in caring.