Editing Blowers

I had an article on blowers on another forum that got over 2,500 hits in a little over 2 years. Then, when they did an update on the forum, they lost all the information. I plan to research and do it again here real soon.
techinspector1

I'll be investigating and reporting on these and any others I can find......
http://www.roadsters.com/engines/#Blowers

This will get us off to a good start....
http://www.superchargeronline.com/content.asp?id=15
http://www.superchargersonline.com/content.asp?id=16
http://www.superchargersonline.com/content.asp?id=31
http://www.superchargersonline.com/content.asp?ID=76
http://www.superchargersonline.com/content.asp?id=85

There are 3 types of blowers; Roots, Screw and Centrifugal. Let's look at each one and list some sites for finding them......

Roots type....
There are designs which have 2 lobes on each rotor and there are others with 3 lobes on each rotor. There are also variations where the rotors are "twisted" along their axis. 
http://en.wikipedia.org/wiki/Roots_blower
A neat animation showing a straight-on view of the rotors in a 3-lobe Roots. Air entering is in blue and air exiting is in red....
http://www.mekanizmalar.com/roots3.html
53.. 2.3.4.V6.V8.V12..
71.. 2.3.4.4Twin.6.6Twin.6Quad.8V.12V.12VTwin.16V.16VTwin
92.. 6V.8V.12V.16V..
110.. 6.6Twin..
149.. 12V.16V..
add to those Turbo .. Turbo intercooled .. Turbo aftercooled .. Turbo intercooled aftercooled ..
those are documented but may be a few others not certain if there was a 171, and there were some V71 Twins and Quads.. inline had High and Low blocks..
there were also V53 and 671 alloy block versions