Tag: Tommy Armour EQL

Dechambeau sporting Cobra single length irons

On By Menno ZachariasIn Clubs2 Comments

The speculation as to which OEM Bryson Dechambeau will sign with once he turns pro is getting clearer.  He recently started playing a Cobra Driver and this week debuted a new set of single length  Cobra irons.

I’ve played a few Cobra Hybrids over the years but have never tried Cobra woods or irons.  That may soon change, especially as it relates to irons.

Cobra has produced, or perhaps, more correctly, altered a set of their Cobra King Forged CB irons to match the specifications of Dechambeau’s original Edel irons. He put them in play this week at the 19th Annual Georgia Cup.

CobraKingMB

Stock Cobra King Forged MB irons

According to WRX Golf,  Dechambeau’s Cobra prototype irons are 37.5 inches long throughout the set with each head weighing 280 grams.  The lie angle is 73.5 degrees.

Apparently the process of altering the Cobra CB irons to meet the specifications of the Edel irons involved a lot of grinding, bending and adding weight to the lower lofted irons.

This leads to several interesting questions:

  1. Which set of irons will Dechambeau put into play when he tees it up at the Masters next week?  My guess is he will go with the Edel irons but there may well be some industry pressure for him to use the Cobra irons, which in my mind would be a mistake.
  2. Are we about to see a major OEM produce a set of single length irons for the mass market?  That will all depend on how well Dechambeau performs once he turns pro, which he intends to do the week after the Masters.  If he were to perform well as a pro with Cobra single length irons, we may well see a major OEM venture into the field of mass marketing single length irons, the first since Tommy Armour’s ill-fated attempt in the mid 1980’s. A winning Dechambeau would provide Cobra with the ‘poster boy’ Armour lacked.

Single Length Golf Clubs

On By Menno ZachariasIn Clubs5 Comments

What are single length clubs?

As the name implies, single length clubs are a set of golf clubs where all the irons (but not the hybrids and woods) are the same length.

I first started dabbling with the notion of a set of irons that were all the same length long before the Internet was prominent.  Back then (late 70’s early 80’s) there were very few, if any, good sources of information on the topic so basically I reverted to the tried and true method called experimentation.

What caused me to start down that road was a realization that I think all golfers come to at some point in time, that being: there are one or two irons in the set that you hit much better than the other irons in the set.

For most golfers, that one favorite club that feels better and results in better shots is the 7 or 8 iron and in some cases the 6 iron.  I’ve heard many golfers say, “if I could just hit the rest of my clubs like I hit my  seven iron, I’d be a pretty good player”.

Back then I did not understand much about swing planes, and had only a rudimentary understanding of the prevailing principles of golf club construction.

To address this issue I decided I needed to get some instructional material about how major manufacturers assembled golf clubs and the principles they employed so I purchased some books on golf club assembly.  Before I knew it, I was  assembling golf clubs at first for my own use and soon thereafter for friends and fellow golfers.

Traditional golf club length and head weight

Traditional golf club assembly principles dictate that clubs are progressively longer through the set.  Wedges start around 35 to 35.5 inches in length and then each club is built 1/2 inch longer so by the time you get to a 3 iron it is around  39 inches long.

To accommodate these changes in club length the lie angles change starting around 64 degrees for wedges and progressing to  59 degrees for a 3 iron.  The head weights also change starting around 300 grams for a sand wedge and arriving by increments at 230 grams for a 3 iron.  In theory the difference in head weight and shaft length from a wedge to a 3 iron should result in a set of clubs that all ‘feel’ the same.  The shafts are ‘tipped’, which means shaft material is removed from the lower end of the shaft to make them progressively stiffer as the heads get heavier.

Mass Produced Single Length Clubs

In 1986 the Tommy Armour Golf Company produced a set of clubs called EQL (equal length).  These clubs featured a head very similar to the Armour 845’s which were popular at the time.  The difference was all the heads weighed around 260 grams and all the irons were the  length of a 6 iron.  Because the idea of single length irons was considered too radical a departure from the norm, Armour was not able to get any prominent professionals to play or endorse the clubs.  As a result the idea was scrapped and production was halted.

The EQL irons were inspired in large part by Moe Norman’s swing.  Norman, who used a single plane swing, choked down on most of his irons to the point where he was in reality hitting what amounted to single length irons.

I have a set of EQL’s and they are pictured below.

 

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EQL2Although I have played these clubs with some success I was never a fan of the  offset Armour 845 heads.

My Winter Project

Being a fan of Bryson DeChambeau who uses not only single length clubs, custom-made for him by Edel Golf but also a single plane swing, I have decided I need to build myself a set of new single length irons.  Although you can now purchase custom-made single length irons the cost is substantial.

I have settled on Pinhawk heads.  They are available from flop wedge through 4 iron (with an optional 4 hybrid) with a lie angle of 62.5 degrees and a head wight of 272 grams throughout the set.  The head I have selected is pictured below.

pinhawk-sl-single-length-irons (1)

I will keep you posted.