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What is the purpose of a thick top line on a game improvement iron?


Hook DeLoft

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It seems that a thick top line would move weight high in the head, which is the opposite of the design goals of a SGI, which is typically designed with weight low in the club head to help elevate the ball.  What am I missing?

14 of the following:

Ping G430 Max 10.5 degree

Callaway 2023 Big Bertha 3 wood set to 17 degrees

Cobra F9 Speedback 7/8 wood set at 23.5 degrees

Callaway Epic Max 11 wood

Ping Eye 2 BeCu 2-SW

Mizuno 923 JPX HM HL 6-GW

Hogan sand wedge 56 degree bent to 53

Maltby M Series+ 54 degree

Ping Glide 3.0 Eye2 58 degree

Ping Glide 3.0 60 degree

Evnroll ER2

Ping Sigma 2 Anser

Cheap Top Flite mallet putter from Dick's, currently holding down first place in the bag

TaylorMade Mini Spider

Bridgestone XS

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Maintaining ball speed throughout the face.  With a very thin topline you would lose way more ball speed with a high on the face shot.

I should add I'm not a club designer, I have no evidence that my thoughts are correct and I'm sure there's more to it than that.  

Edited by hckymeyer

Driver: :taylormade-small: SLDR w/ Fujikura Ventus Black

3w: :taylormade-small:'16 M2 hl w/ Diamana D+ 82

5w: :cleveland-small: Launcher HB w/ HZRDUS Yellow

Hybrid: :cleveland-small: 22 deg. Launcher HB w/ HZRDUS Black

Irons: :cleveland-small: 5i - gap Launcher CBX w/ Nippon Modus 3 125

Wedges: :cleveland-small: 54 CBX & 58 Zipcore w/ Nippon Modus 3 125

Putter: :odyssey-small: Red 7s

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Game improvement irons usually have some sort of cavity and many are coming with thinner faces. That removes weight. The weight is spread around the perimeter of the head and more weight is needed to achieve the higher MOI.

then there is weight added to the bottom to help move the cog lower and also a shorter hosel for some is used to help lower the cog. 
 

Driver: PXG 0811 X+ Proto w/UST Helium 5F4

Wood: TaylorMade M5 5W w/Accra TZ5 +1/2”, TaylorMade Sim 3W w/Aldila rogue white

Hybrid: PXG Gen2 22* w/AD hybrid

Irons: PXG Gen3 0311T w/Nippon modus 120

Wedges: TaylorMade MG2 50*, Tiger grind 56/60

Putter: Scotty Caemeron Super Rat1

Ball: Titleist Prov1

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Simple answer- weight distribution


Sent from my iPhone using Tapatalk

Simple answer- weight distribution


Sent from my iPhone using Tapatalk

Ping G430 Max 9* turned up to 10* in draw setting X-Stiff Ping Tour Chrome 2.0 60

Srixon ZX 3w Ventus Velocore Blue 7s

Ping G425 5w X-Stiff Ping Tour 70 

Srixon ZX5 4-6 Modus Tour 105 Stiff 

Srixon ZX& 7-PW  Modus Tour 105 Stiff 

:cleveland-small: RTX Zipcore 50* 54* 58* TrueTemper Dynamic Gold Spinner

 See the source image Phantom X5 Putter

Ball: Srixon Z-Star Diamond <>

 

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