air and oil filters

[shipvibration]

can someone tell me the design factors involved in manufacture of air and oil filters?(e.g beta factor etc.,)
any sites with basic info on filter types and design ?
thanx.

 

[sciguyjim]

Here are a selection of articles I found comparing oil filter brands and explanations of the beta ratio:

http://subtopics.freeyellow.com/Oil.htm

http://www.frankhunt.com/FRANK/corvette/articles/oilfilterstudy/oilfilterstudy.html

http://www.mbmopar.com/Hot_Topics/hot_topics.htm

http://www.89tta.com/oilfilter.htm

http://www.tech2tech.net/library/General/oilfiltr.htm

http://www.shotimes.com/SHO3oilfilter.html

http://www.mr2.com/TEXT/oil_filter_test.html

http://www.forums.vmag.com/suvmontero1099/messages/1941.html

http://www.fuggup.com/articles/gallery/fram_filter_failure.htm

http://www.pecuniary.com/faq/micron-rating.html

http://www.autospeed.co.nz/A_1045/page1.html

http://www.shoclub.com/lubrication-oil/lubrication-oilpart3.htm

http://www.premolube.com/faqs.htm

http://www.pureoil.com/TEMP_old_site/faq.htm