Question:
In terms of USGA legality the COR must not exceed 0.83. I am given to understand that in practice the maximum possible COR is of the order of 0.85 so there is hardly much difference between the maximum allowed and the maximum possible. I doubt that there is any real advantage in promoting equipment on this basis.
I wouldn’t be so sure about that. Callaway representatives say that they have a prototype driver in Japan which reportedly has a COR of over .90. They are also experimenting with various composites, probably something similar to the Golfsmith Cermet heads, which are now discontinued. Callaway presents themselves as industry leaders, but the reality is that they are followers. They’ll come out with their own 520cc Clanger and act like they invented it. Some possible ad slogans: "The Callaway Clanger …. ….heard at finer courses worldwide!" … so loud, it woke up Ely!"
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Who makes and sells the 520cc Clanger??
– Hide quoted text — Show quoted text – In terms of USGA legality the COR must not exceed 0.83. I am given to understand that in practice the maximum possible COR is of the order of 0.85 so there is hardly much difference between the maximum allowed and the maximum possible. I doubt that there is any real advantage in promoting equipment on this basis. I wouldn’t be so sure about that. Callaway representatives say that they have a prototype driver in Japan which reportedly has a COR of over .90. They are also experimenting with various composites, probably something similar to the Golfsmith Cermet heads, which are now discontinued. Callaway presents themselves as industry leaders, but the reality is that they are followers. They’ll come out with their own 520cc Clanger and act like they invented it. Some possible ad slogans: "The Callaway Clanger …. ….heard at finer courses worldwide!" … so loud, it woke up Ely!"
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callaway reps will tell you that the erc II has a cor of 88 or 89
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Being governed by R&A, I’m not restricted to what driver I can use. So, does anyone know what the MOST illegal driver head out there is ? I see the manufacturers don’t publish the COR rating given by the USGA. Why is this ? Surely it would be a selling point to say "Our driver is more illegal than XYZ’s driver" ? Peasant
Well, an illegal alien without a driver’s license…. What you are probably wanting is to find the driver that has certain performance characteristics – and you’re not concerned with legality. You want the longest hitter? Do you mind giving up on accuracy? Some people have cobbled up clubs with springs and gunpowder, I don’t imagine you want those. Do you want clubs that are legal in Europe or Japan?
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the market for such a driver would be so low that it woouldnt be worth marketing the product Why would it be so low please? I’m not sure i understand
who could use it, apart from golfers who play for ‘nothing’
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Being governed by R&A, I’m not restricted to what driver I can use. So, does anyone know what the MOST illegal driver head out there is ? I see the manufacturers don’t publish the COR rating given by the USGA. Why is this ? Surely it would be a selling point to say "Our driver is more illegal than XYZ’s driver" ?
In terms of USGA legality the COR must not exceed 0.83. I am given to understand that in practice the maximum possible COR is of the order of 0.85 so there is hardly much difference between the maximum allowed and the maximum possible. I doubt that there is any real advantage in promoting equipment on this basis.
No one sensible enough should be persuaded to buy a club on the basis of advertising like this, but manufacturers still try anyway. In Taylor Made’s leaflet on the non-conforming R300 series drivers here in the UK, they state: "TM now introduces the R300 SERIES, making the "best even hotter" with an unlimited hot face built for R&A governed countries." Because COR limits are not observed by the R&A, this issue is not all that commonly known about here in the UK. I’ve spoken to at least 3 resident pros who were unaware of the difference between the R300 and the 300 series drivers! Regards, JJ H’cap 11.6 Resident in Plastics and Burns
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Being governed by R&A, I’m not restricted to what driver I can use. So, does anyone know what the MOST illegal driver head out there is ? I see the manufacturers don’t publish the COR rating given by the USGA. Why is this ? Surely it would be a selling point to say "Our driver is more illegal than XYZ’s driver" ? Peasant
They don’t tell you for a couple of reasons. First, there’s just not that much difference. According to everything I’ve read, the maximum acheivable COR is estimated to be about .85% – to be illegal a club has to exceed .83%. I’ll bet the difference in most of the non-conforming drivers would have to be measured to the thousandths of a percent. Not very impressive from a marketing standpoint. Second, they can’t tell you what the COR for *your* club is. Manufacturing tolerances are just not that exact – and they don’t measure every club. I’ll bet a lot of people are playing ERCs they paid big bucks for, and are blissfully unaware that *their* particular club does, in fact, have a COR of .83% or less! Of course the opposite is probably true of a lot of clubs that just barely squeaked by under the limit – so there are probably a lot of players out there actually playing a non-conforming example of a club that has been ruled to be conforming. — Joe Cartpath – www.joecartpath.com Basic Golf Clubmaking & Memphis Area Golf Course Guide and….The Memphis MG Page…
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I’m not so sure about that. Frequency matching between the clubhead and the golf ball core might give a few more percent of overall COR. -joseph – Hide quoted text — Show quoted text – Being governed by R&A, I’m not restricted to what driver I can use. So, does anyone know what the MOST illegal driver head out there is ? I see the manufacturers don’t publish the COR rating given by the USGA. Why is this ? Surely it would be a selling point to say "Our driver is more illegal than XYZ’s driver" ? In terms of USGA legality the COR must not exceed 0.83. I am given to understand that in practice the maximum possible COR is of the order of 0.85 so there is hardly much difference between the maximum allowed and the maximum possible. I doubt that there is any real advantage in promoting equipment on this basis.
Response:
Being governed by R&A, I’m not restricted to what driver I can use. So, does anyone know what the MOST illegal driver head out there is ? I see the manufacturers don’t publish the COR rating given by the USGA. Why is this ? Surely it would be a selling point to say "Our driver is more illegal than XYZ’s driver" ?
the market for such a driver would be so low that it woouldnt be worth marketing the product
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the market for such a driver would be so low that it woouldnt be worth marketing the product
Why would it be so low please? I’m not sure i understand
Response:
Being governed by R&A, I’m not restricted to what driver I can use. So, does anyone know what the MOST illegal driver head out there is ? I see the manufacturers don’t publish the COR rating given by the USGA. Why is this ? Surely it would be a selling point to say "Our driver is more illegal than XYZ’s driver" ?
In terms of USGA legality the COR must not exceed 0.83. I am given to understand that in practice the maximum possible COR is of the order of 0.85 so there is hardly much difference between the maximum allowed and the maximum possible. I doubt that there is any real advantage in promoting equipment on this basis. cheers david — "Everything should be made as simple as possible, but not simpler" – Albert Einstein Remove extra dot com from address