Tapely pull/strain gage?

[roverman]

Anybody? Some auto magazines, years ago, would road test using a Tapely pull? My understanding is it measured a value for road load and aero resistance. Comparable to a strain gage? I am unfamiliar with use of either. Seems like a possible use for aero refinement with-out wind tunnel? Of course  a manometer and yarn  could be useful. Prasitic loss in the drive train,(in neutral)? Thanks, roverman.

[Dave]

The first link is great. Google books has old Popular Science mags online.



http://books.google.com/books?id=MCoDAAAAMBAJ&pg=PA86&lpg=PA86&dq=Tapley+meter+road+and+track&source=bl&ots=LmRVlf4TUL&sig=iGRoMAlel7LczNApywe6QFT1aOY&hl=en&ei=8toHS5r3CI2XtgeH6-jGCg&sa=X&oi=book_result&ct=result&resnum=8&ved=0CBwQ6AEwBw#v=onepage&q=Tapley%20meter%20road%20and%20track&f=false


http://www.tttonline.com/product/brake%20gauges%20and%20tools/Tapley.htm


http://www.brakemeters.co.nz/tapley-brake-meter-use.aspx