Re: Maltby playability factor question
Maltby Playability Factor
Originally Posted by max power
is based upon six measurements made on an iron from a set of clubs. I made a copy of the MPI table, but have had trouble loading it to this site. I also made up a table comparing the six-category MPF system with the three-category Golf Digest system.
Basically, the higher the MPF, the easier it is to hit the club and get it airborne. Clubs with a very high MPF are harder to "work" as far as height control goes, because the Vertical Center of Gravity is so low (VCOG is a key measurement). Low VCOG means ball pops up pretty high. And yes, sometimes a blade club will have a higher MPF than a muscle-cavity:Callaway X22 Tour MPF = 594 | X Forged (2009) MPF = 621Ping S59 MPF = 660 | I10 MPF = 560 | S57 MPF = 612
In Ping 560 vs. 660 is a noticeable difference; otherwise, 20 or 30 points difference is negligible.
* MPF classes suggest which category
of club might be best for you. But, you still need to comparison test clubs.
* MPF is a starting point, but does not take into account shaft flex and kickpoint.
His website has lots of info on club design and club comparisons: http://www.ralphmaltby.com/
Website doesn't show the MF categories, or how you calculate MPF. For this you need his book Maltby Playability Factor: Book I MPF Irons
(2005). Some golf shops have copies of it for about $1, as a new version is in the works. Super book if you like golf club design and/or history of golf club development. Lots of pictures and engineering drawings in full color.