The author got interested in motorcycles when the long travel rear suspension boom was starting. He used to race sports cars and suspension was his primary interest. Girard is an engineer, and after reading everything he could he found he still hadn't come across sufficient information on motorcycle suspensions. He sat down and figured it all out for himself, using his race car background, and wrote/published this 57 page book. He has all the math you will need to calculate wheel rate, spring rates, preload, etc. Even though he is discussing long travel rear suspension, everything is applicable to motorcycle rear suspensions in general. The book was written before the linkage suspensions came out, but will still be relevant to those types of suspension.
I've had a copy of the book since about 1983. I've found the book very informative, and written well enough that I can get through the math, (though you will want to have a pocket calculator handy).. Since I've seen the interest many of you have in things technical I contacted Girard and obtained his remaining supply.
I'm selling the books for $16.00 prepaid which includes first-class postage in the United States.
Foreign orders will need to add extra postage and pay with an international money order or US currency:
For more information contact us by using
http://www.eurospares.com/susbook.htm