I doubt that most woodworkers even know what levels of dust control they need to remain healthy and have a long and enjoyable time in the hobby. Apart from that different approaches are needed depending on the climate, workshop environment and even the type of woodwork undertaken. For instance in Australia we rarely use filters, exhausting straight to atmosphere. This has two advantages, increases the airflow and gets the dust out of the workshop with no chance or recirculation. There are all sorts of parameters to be aware of when thinking about a system that will be effective and do the job and a lot of those are dictated by the workshop environment not its size or the power of the system. I still do not understand why everything is dictated by HORSEPOWER when it should be the size of the impeller that is the important criteria. Yes it takes a certain amount of power to drive an impeller of a given size but my personal preference is to judge by impeller size. I can drive a 14, 15 or even 16" impeller with a 5hp motor and it is the impeller that will decide how well the job is done not the HP, so why the preference to quote HP when it is not the prime indicator of performance?
Apart from that the North American market is the only one that uses 60hz and that is a big factor in any design. Wait a minute you guys are not interested in other markets but the mythical book that might be written will be read in other markets and taken as gospel when it will be completely wrong due to motor speeds being lower. Then we have duct sizing, some sizes available to certain markets and others not being able to buy the recommended size. I think any attempt to write a book would very difficult unless it was aimed at a specific market and that point was made clear at the outset/
Chris
Everything I like is either illegal, immoral or fattening