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CG64W spin

• YankeeJim 25,827 Posts

  Thu, Sep 1 2011 5:12 AM

  I need help understanding something that happened in an AS match at SA front last night. Hitting an approach to the back pin on #2- 57 out with big helping wind  (mixed match-TM teed off) and I take the CG64w, put full back spin on it and ding it. The ball predictably lands just past the hole but then proceeds to go into high gear reverse like it was shot out of a cannon. It wound up backing up the slope and took off to about 25 feet away.

  I use the Callaway (s) ball and know about what spin does. I use it very sparingly and know what that club does with it.  Before you laugh and say I shouldn't have used the spin take a look at 2 other dinged full back spin 64W shots-one at Kia and the other at Oak. I went out to get them right after this occurrence to see if I could figure out what happened. Notice the "stop and hop"-this is what I expected.  I went back to #2 and tried to duplicate it but the succeeding tries all reacted like the pictures. Do I call this happening a wild deviation or what?

  

• Cleworthy 3,468 Posts

  Thu, Sep 1 2011 6:43 AM

  Wouldn't the slope of the landing area affect the way the ball reacts?  C

• YankeeJim 25,827 Posts

  Thu, Sep 1 2011 7:47 AM

  Most definitely but that club's trajectory comes relatively straight down so you wouldn't expect a lot of draw in the landing. Besides, the way it backed up the hill and the speed it had totally belies logic especially because it was going with a strong wind.

• Cleworthy 3,468 Posts

  Thu, Sep 1 2011 8:16 AM

  For that particular club (64 deg CG only), I have a -20 yd factor with full back spin and with the Callaway z ball.  I can't explain why you would not get a big back-up in the other examples.  Because of the great amount of spin for that club, I very seldom use much back spin with it.  Pretty unpredictable.  C

• YankeeJim 25,827 Posts

  Thu, Sep 1 2011 8:51 AM

  Cleworthy:

  For that particular club (64 deg CG only), I have a -20 yd factor with full back spin and with the Callaway z ball.

  That's really interesting. I'm learning through this exercise that mine is 3-5 yards less and seems to be very predictable. Landing on an uphill green takes all bets off though because it will back up a lot.

  When I first starting using it, it took topspin to keep it from backing up. Now, full backspin just stops it. What in the world am I missing here?

• robdelahunty 670 Posts

  Thu, Sep 1 2011 9:22 AM

  I just got today the CG's available to my level.Hole no1 landed 3 or 4 yds past the hole full B/Spin ball got sucked off the green and into the burn,had a similar high speed reverse on no7.Took em outta the bag and got on with my league match.Me thinks seek advice and here i am.I using the cally s and will be in receipt of the 64deg soon as i reach L80.

  Still it's reasuring that even the legendary YJ has questions of his own,Respect to you Sir!

  Bob.

• Cleworthy 3,468 Posts

  Thu, Sep 1 2011 9:31 AM

  I am grasping at straws here but could it be the difference between Legend tourney greens and TM tourney greens?  Also, I may have overestimated at -20 yds, just knew that with full BS it was probably going off the green.  C

• WGTicon 12,511 Posts

  Thu, Sep 1 2011 9:51 AM

  Hi

  The faster the greens to more wild you will see. Also, if wind is higher it will change the conditions as well. Elevation plays a big deal as well. I sometimes too puzzled by the action, but that's generally because of 2 things. I am either high up or below or wind is really strong.

  With that said, I think maybe once in a while spin can be funky when all of those factors are in + deviation. I suspect in real golf spin is not that precise either.

  -wgticon

• YankeeJim 25,827 Posts

  Thu, Sep 1 2011 10:10 AM

  Zoot Alors!!  I think I figured it out and discovered something very interesting about the ball/wedge combo I use. The 7th Challenge at Oakmont back 9 in a CC tourney is a 57 yard uphill shot to the green. The wind is always blowing away and it is clearly a 64W shot. This is where I first noticed with full backspin the ball would do the hop thing. I went back there and tried it again, just to make sure I wasn't seeing things. Sure enough, full backspin and it hops to a stop 3 yards off the distance. This was also with a choked swing.

  I then went back again to the same hole and instead of using full backspin I used 1/2-set the dot at the base of the V on the ball.  I'll be damned if the ball didn't spin right back off the green! It still doesn't explain what I saw in the AS match but apparently full backspin doesn't mean high gear reverse-something less than full does. It's almost as if putting max backspin on the Callaway s ball acts like a governor. 

  It seems to me that the degree of spin you put on the ball does 2 things. Into wind, 1/2 bs controls the landing with some distance loss while full bs knocks the yardage way down. Conversely, with  the wind, full backspin causes carry and added distance while 1/2 controls the landing more than the carry.

• DarSum 1,440 Posts

  Thu, Sep 1 2011 12:51 PM

  YankeeJim:

  It seems to me that the degree of spin you put on the ball does 2 things. Into wind, 1/2 bs controls the landing with some distance loss while full bs knocks the yardage way down. Conversely, with  the wind, full backspin causes carry and added distance while 1/2 controls the landing more than the carry.

  That is very very interesting. I just had a shot yesterday at STA 21mph tail wind Level 78+ 60°. I RARELY give that bs. But in this case I tried almost half bs. Not quite half but almost. The shot was 78 yrds. So I played that bs and choked it for 70 yrds. The ball landed about a yrd short of the pin and left a black mark on the green backing up off the green. WITH a 21 mph tail wind. So you're findings may be correct. I think it's time to go do some wedge practice.

  BTW I can not believe that 64° Cleveland doesn't zip back with any bs added at all. The TM Satin 64° will back up that much.