Modifying the Aerodynamics of Your Road Car (SpeedPro)

I just finished reading my copy of the book. Excellent job. This book could be more accurately titled "The Ecomodders Aerodynamic Bible". I have modified my truck for improved gas mileage. Some things worked, some did not. This book told my why some things did not work, and what I have to do make other things work better. The entire book is easily understandable by normal people. One does not need to be an engineer or scientist to understand it and use the information.I now know why my wheel covers did not affect the gas mileage.My air dam also did not affect the gas mileage. I now know how to find out why, and then what to do about it. Full disclosure: The old air dam was made of brittle plastic and was in several pieces held together with Gorilla tape. There should be room for drag reduction.My 100% grille block has never caused overheating, even on a long upgrade at 91 deg F with the AC running. I think I should look further into that also. There's room to further reduce drag, especially in winter.

I have been following the evolution of automobile aerodynamics as one of my hobbies for a very long time. I also followed author Edgar Julian's website regularly when he had it. I found his book to be very up-to-date on current domestic auto aerodynamic trends. These trends are now accelerating due to the critical importance of aero efficiency in EV design. This book covers basic technology, measurement and flow visualization techniques, examples of old as well as very latest designs, and it especially highlights the critical nature and characteristics of under-car airflow that is now influencing the very latest automobile designs and styling.

The book is thorough yet very understandable. From testing methods to possible modifications, locations and fabrication, the book carries a lot of information.

Mr. Julian Egar makes this subject simple. I watched his videos and was completed to buy the book. I haven't had the time to read it yet, but I will get to it.

Far and away the best in its field. Most work in this field is either insultingly condescending or overly-focused, dry and useless. This book is the single best combination of science, math, instruction and personal experience that I have ever seen in any field. Not only is it useful, it is READABLE and fun (at least if you're interested in improving the performance of your car). I simply cannot recommend it highly enough. You can understand it if you've never had a physics class, you can take it and fly ahead with experimentation and testing if you are familiar with the concepts and just needed some guidance. The author actually used and describes how to make a height-sensing apparatus I had imagined (for measuring downforce), and gives PART NUMBERS and sources! I can't wait to get back to the track with some wool tufts and a photographer.

This is a simple and clear read on how to improve the daily driver car aerodynamics. Many topics also apply to track cars. Thus, the daily driver performance can be improved in terms of power needed for a given road speed, of gas mileage (fuel economy) and of noise reduction for comfort by reducing the car drag. Suggested modifications and add-ons represent often what the car manufacturer did not want to pay for or did not apply yet as of time of manufacturing. Julian Edgar has long experimented and written on various car topics for the now defunct autospeed.com web site. The book is well documented with technical details, pictures, how to's and, best of all, is supported by an extended biography of technical and scientific papers including recent studies by road car engineers. I strongly recommend this book to car modifiers, to "ecomodders", to car hobbyists as a guide to experiment and succeed at improving a car performance without wasting time on useless mods.

Ce livre est vraiment très bien, le bon niveau entre complexité et accessibilité des concepts.

Dieses Buch habe ich für mein Mann gekauft. Er war super begeistert 👌

Ho acquistato questo libro perchè cercavo suggerimenti pratici per ottimizzare l'aerodinamica di un automobile.Sicuramente questo libro è di aiuto. Raccoglie indicazioni interessanti.

As a casual car modifier, looking to improve performance is a pastime. Whilst researching my next project, I started reading this book.Julian identifies all the ley areas to consider, breaks them down and uses his real world examples of problems and how to get round them.Honestly, this is a book I will refer to again and again.The only problem is it's made me consider the other books he has written and make an (expensive) shortlist!