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Originally Posted by cct  I have to disagree that grooves do not provide spin. |
Of course you are at liberty to disagree
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Originally Posted by cct Pros don't change their wedges as often as u think! Vijay still plays Cleveland 900's that Cleveland don't sell anymore. I know a family friend who is a top 50 tour pro on the european tour who regrooves his wedges regularly, as do all pros! |
Maybe he does not know any better? He may be a top tour pro but that does not change the laws of physics and ballistics.
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Originally Posted by cct Car tyres and golf grooves can't be compared as they serve different purposes. |
Do they, I think not! The grooves on car tyres and golf
clubs allow moisture drain away from the contact area so that the surface does not create an aquaplane effect that reduces grip. This would allow the ball to slide over the surface thus reducing spin.
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Originally Posted by cct When a clubface hits the ball it stikes on a downward blow the ball then runs up the clubface and the grooves cut down on the ball putting backspin on the ball. |
Yes, a clubface can hit a ball with a downward blow but on the other hand it can contact it level or on an upward path, it depends on the club being used and whether the ball is on the ground or teed up. The important factor is that the ball is struck as near centre as possible on the face so that optimum forces are applied to it.
When the ball is struck by the clubface it is deformed onto the face due to the collision, the ball then sticks to the surface of the face for a fraction of a millisecond, for this to happen the ball cares not whether there is a groove underneath it, a slightly abraded surface is quite adequate for this to happen. The loft on the face will create an oblique blow that will cause the ball to start sliding upwards, it will loose its adhesion and start to roll, this is what causes the spin. The more the loft the more oblique the blow and the faster the ball will roll on the face and the higher the angle the ball will leave the club.
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Originally Posted by cct Why do pros clean their grooves after every shot? Because if they don't have clean grooves they can't get as much spin as grooves increase the spin rate! |
Well, if it makes them feel better then why not! It is a good idea to remove anything that would cause the ball to loose adhesion , dirt, grass, water etc, as a matter of fact grooves are a major factor in retaining these undesirable materials on the clubface.
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Originally Posted by cct Wedge manufacturers state their wedge gives out a value of rpm which is say more than a rival! What gives these different rpm values...Different style of grooves! Just look at snake eyes adverts to see what they state! |
Hmmm! Well, I guess they will suggest their wedges have some USP. The spin values are a factor of loft, how the ball is struck, the ball and the surface condition. It is quite possible to suggest within a tolerance what spin rates a club will produce under optimum conditions.
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As an after thought: The reason some of the regulatory bodies are concerned about the types of grooving used on
clubs is because of the way they assist players to get the ball out of deep rough while still achieving reasonable spin rates. The reason they can do this goes back to my statement that grooves assist in channeling away moisture and grass juice from the clubface, this in their opinion is making the game too easy for the pros.