Monday 10 December 2012

Deep Face Drivers vs Shallow Face Drivers

Which do you like to play?

I prefer Deep Faced Drivers.

Firstly you must understand the physics behind the clubhead, then you can decide what you like.

Firstly the Driver is limited by volume 460cc. And most drivers are maxed to 460cc, unless you get some Tour /Players driver which are 440cc.

Things that we look for in a driver is back spin, side spin, forgiveness, launch angle and swing speed.

Back spin is affected by the Centre of Gravity of the club. A forward CG gives more Back Spin.

Launch angle is affected by the loft of the face and also the CG. A Higher CG gives a lower launch.

Forgiveness and Side spin are affected by Moment of inertia. Which is in turn affected by the broadness of the driver front to back, i.e. Square head drivers have higher MOI. Another factor is the parabolic club face and variable thinness. But the COR has to be limited. A lot of new technology/novelties come and go. But fundamentally a few things remained unchanged. For a deeper face, it forgives up-down mishits more than left right mishits like the shallower and broader drivers.

Swing Speed is affected by the weight of the clubhead, size of clubhead (smaller less wind resistance) and aerodynamic design of the clubhead.

What I need is mainly low back spin and low launch. Got enough swing speed so I need not worry too much about that. Newer Drivers have adequate MOI for my swing and occasionally need to work the ball.

A Deep face driver suits me, as it results in a nice lower launch due to the raised CG. But the forward CG brings the spin rate up. So what RBZ and Titleist does is to add weight to the bottom and back of the driver to bring the CG back to reduce backspin, more penetrating drives and longer distances. The weight at the back and bottom might lower the CG a bit as compared to the shallow face, so it still gives a higher launch. So I still play a 9 degrees loft and dial down and loft with the FCT.

Hope this clears things up. But there are many other things and technologies each ClubMaker has to throw things in the mix. (i.e. Crown thickness and weight, Crown design, Offset et al)




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