Iron Transfer Hot

September 21, 2009 by  
Filed under Die Cutting Machines and Supplies

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Wood is a poor conductor, which means that heat is slow to transfer--even when wood is very hot. Why can?

firewalkers safely walk barefoot on red-hot wooden coals, but not safely walk barefoot on red-hot pieces of iron?

The red hot bit that touches the foot transfers some heat to the foot. The foot warms up, the wood cools down. The wood cools enough so that the foot doesn't get enough heat to hurt it. That takes a short amount of time - of the order of 0.2 s. The hot wood which is now under the cool surface starts to transfer heat to the cool surface bit, but wood is a poor conductor and the reheating of the surface takes some time - about 0.4 s. Meanwhile the ( now slightly warmer ) foot has lifted off and move on. - the foot can do this about twice in two seconds before the added heat starts to damage the skin.
Red hot iron - the surface cools just the same as the wood when the foot lands on it, but it reheats within 1/100 of a second because of the good conductivity of metal.

EDIT - if they are both red hot they have the same temperature.

Taylormade R9 Tp Irons—New Technology For 2010 Groove Rule

The TaylorMade R9 TP Irons has serious performance technology in a classic player's shape and size. The High MOI (Moment of Inertia) and Inverted Cone clubface technology in every iron mean superior distance while the VCC (Velocity-Control Chamber) offer increased consistency, ball speed and power.


The vibration-controlling cavity badge provides a satisfying feel and sound and the Tour-beveled sole reduces resistance to react "thinner" with the turf. The grooves conform to new USGA and R&A rules and the KBS Tour Series steel shafts are engineered to promote increased stability and energy transfer.


VCC (Velocity-Control Chamber)

Called the Velocity-Control Chamber, it makes it possible for an immense area of the ultra-thin (2.0 mm) clubface to exist unsupported.


Inverted Cone Technology
As the VCC makes it easier to launch the ball with the long- and middle-irons, TaylorMade engineers have gone to great lengths to ensure that the R9 irons deliver controlled power by incorporating Inverted Cone Technology on the inner side of the clubface. In addition to promoting higher ball speed on off-center hits, the Inverted Cone has been carefully calibrated to eliminate "hot spots" so that ball speed is consistent across the clubface, resulting in keen and consistent distance control in all of the R9 irons.


TaylorMade R9 TP Iron Set

As part of TaylorMade's revered Tour Preferred® product line, R9 TP irons are engineered to, above all, deliver an exceptional degree of distance control and consistency, which is critical to any player who competes at a high level or wants to.

The R9 TP iron's classic shape and size are characterized by a compact head featuring a semi-straight leading edge, semi-square toe, thin topline and thin, cambered, beveled, multi-functional sole.


New Technology
In terms of technology, the R9 TP irons offer plenty. The 2- through 5-iron incorporate TaylorMade's Velocity Control Chamber (VCC), a fully enclosed compartment positioned behind the clubface that allows a large area of the 2.0 mm face to exist unsupported, increasing COR to promote more distance.


The open space within the VCC is fully filled with light yet dense foam that manages vibration energy to deliver excellent feel and sound at impact. The VCC allows the re-distribution of mass within the clubhead to give the R9 TP long-irons an exceptionally low CG and high MOI, which combines with the fast clubface to make them easier to launch high and long.


Progressive face thickness is incorporated throughout the set starting at 2.0 mm in the 2- through 5-iron, 2.3 mm in the 6- and 7-iron, and 2.5 mm in the 8-iron through pitching wedge. The result is progressively higher COR where you need it in the middle-irons and long-irons, and fantastic feel in the short-irons


Compact Shape
R9 TP heads are similar to the compact shape of the Tour Preferred® irons (which are the most popular and successful irons on the PGA Tour today), yet the R9 TPs offer a larger hittable face area due in part to differences in the way the head blends into the hosel.


The top-line is beveled along the back edge to give it a thin and elegant appearance, and the sole is beveled to reduce resistance so it can perform "thinner" when it meets the turf. Each R9 TP head is perimeter-weighted and equipped with a vibration-controlling cavity badge.


The 6-iron through pitching wedge feature an undercut cavity that's visible because the cavity badge is smaller than that used in the R9 irons. The undercut cavity allows us to push more weight to the perimeter of the head in order to increase MOI and distance-control


New and Conforming Grooves for 2010
The R9 TP irons incorporate a new groove design that conforms to the USGA and R&A ruling that goes into affect in 2010 for high-level competition.

Tour-Proven KBS Steel Shafts

The R9 TP irons come equipped with KBS Tour Series steel shafts, which is currently the fastest growing steel shaft brand on the PGA Tour. Several of TaylorMade's Tour Staff pros are in the same KBS shaft that's in the R9 TP including Kenny Perry, Dustin Johnson and Rory Sabbatini who have each used them to win once.

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TaylorMade R9 TP Irons $448.99 with free shipping for sale at



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