Sign in to follow this  
Followers 0
arturo28mx

Iron sets with low bounce

5 posts in this topic

I understand the concept of bounce as it applies to wedges, and why you need less or more bounce depending on the conditions you play in (fluffy sand, etc.).

However, my question applies to iron sets, normally 4 to pitching wedge. More specifically, game improvement iron sets.

I have recently found that some iron sets have very high bounce numbers (such as Callaway Razr X, where a 4 iron has 3 degrees and 7 iron has 5 degrees) and some iron sets have very low bounce numbers (such as Mizuno JPX 825, where 4 iron has -1.5 degrees and 7 iron has 1 degree). They are both supposed to be game improvement irons, so I would assume their bounce numbers would be similar.

Could someone explain why this difference? What kind of player would benefit from one or the other?

I would understand lower bounce numbers in players irons, but in this case both models I mentioned are game improvement irons.

Thanks in advance for your comments

0

Share this post


Link to post
Share on other sites

Want to get rid of this advertisement? Sign up (or log in) today! It's free!

The way some companies measure bounce isn't always consistent. I have seen wedges with lots of camber, or a rounded sole from front to back, yet with low bounce numbers. However, if you laid into that wedge and hit down, it would play more effective bounce than a flat one with the same number. But because of the camber, you could lean the handle back without exposing too much bounce either.

There are also some sets with a blunt, or "killed" leading edge, which is effectively a mini bounce surface, yet if the center of the sole is measured it's not taken into account. If you had a narrow high bounce wedge and a wide soled, low bounce wedge, they'd both have similar effective bounce. It's a tricky sort of specification and can hardly be explained in a single number. But it matters more on wedges where it affects the leading edge height, and the head is played from a wider range of angles.

The Mizunos seem to have a lot of heel relief, meant to be played opened slightly perhaps; some sets have soles designed to sit open or closed on the ground throughout the set? That would explain the large variation in the set.They might have also measured the bounce as an average of the whole sole instead of the average of the flat part, which made the number appear lower than the effective playing number.

The Callaways seem to have relief under the leading edge, so they play like high bounce irons. But they might play a lot different if you opened them a bit or leaned the handle back. If they measured just that front part rather than averaging the whole sole, it would yield a higher number.

1

Share this post


Link to post
Share on other sites
Awards, Achievements, and Accolades

Originally Posted by LuciusWooding

The way some companies measure bounce isn't always consistent. I have seen wedges with lots of camber, or a rounded sole from front to back, yet with low bounce numbers. However, if you laid into that wedge and hit down, it would play more effective bounce than a flat one with the same number. But because of the camber, you could lean the handle back without exposing too much bounce either.

Lucius points out some of the factors of rated bounce (measured) vs. effective bounce (how club interacts with turf). Ralph Maltby explains this in a segment on wedges, and you also could apply it also to iron sets.

http://www.ralphmaltby.com/50

0

Share this post


Link to post
Share on other sites
Awards, Achievements, and Accolades

The Ralph Maltby article is excellent. I understand better now. Thanks.

0

Share this post


Link to post
Share on other sites

I asked the same question to Mizuno, and this is their response:

"Thank you for contacting Mizuno USA.  The reason that the JPX 825 irons have very little bounce is due to the width of the sole.  Typically, the wider the sole, the lower the bounce will be.  This particularly applies to the long irons.  On a wide-soled iron, if you have too much bounce, then the iron would have a chance of literally bouncing off of the turf at impact.  This would be magnified on firmer conditions.  On our MP irons, the bounce is a little higher because the sole widths are much thinner, and are designed to interact with the turf cleaner at impact."

0

Share this post


Link to post
Share on other sites

Create an account or sign in to comment

You need to be a member in order to leave a comment

Create an account

Sign up for a new account in our community. It's easy!


Register a new account

Sign in

Already have an account? Sign in here.


Sign In Now
Sign in to follow this  
Followers 0



  • Want to join this community?

    We'd love to have you!

    Sign Up
  • 2016 TST Partners

    GAME Golf
    PING Golf
    Lowest Score Wins
  • Posts

    • Share your New Strokes Gained Data from GAME Golf!
      Wow! Thanks for the response. Seeing what I consider an "acceptable miss" for me (since I'm currently happy with a 2-putt from 9 feet), shows how much work I still have to do. My putting wasn't at its best the last couple of rounds. I could give reasons/excuses, but they were what they were. Just looking at my "last round vs scratch" shows how bad my putting was yesterday, compared with expanding it to anything over 5 rounds, where it drops into the 5.something range: Yeah, I said that my first putt is usually more than 10 feet or so.  I only meant that I'm usually not hitting my approach shots close to the pin--I'm usually on the green more than 10 feet from the hole (where a pro has about a 50-50 chance of a 1-putt).  So being beyond 10 feet, my expectation is that since a pro is 50:50 (and worse, as distance goes up), I likely won't make those putts. As always, your insight is appreciated. I've got more work to do, and an attitude to adjust--I'm setting my expectations too low.  Thanks a bunch for taking a look at this.
    • My Swing (Hardspoon)
      Reviewed the Functional Grip thread and practiced at home all week.  Here's what my grip looks like now: (Bonus points for accidentally capturing the Titleist backpack I won at the Norwalk TST outing last year.  I went to crop the picture and realized it was back there so I left it in) Hopefully I haven't gone too far in the other (weak) direction...it's frustrating that I can't figure out how to hold a damn club. Went to the range this evening, and, as expected, was back to hitting a lot of pushes and push-slices.  I had to focus on delivering the clubface square (using a flat left wrist feel)...was able to hit some solid shots with that thought, but not very many. Took @iacas' advice and kept working on the same stuff (proper turn, in-to-out path, "extendo-arms" on the follow through) and mixed in some punch swings.  I definitely made better contact on those. Hopefully I can get this stupid grip thing taken care of...if this looks good, I'll just spend a few minutes every day practicing it.
    • Are you a Better Golfer than a Year Ago?
      Might have to change my vote to about the same. Finally got to play a league round (9 holes), in some honest to God warm weather with some fairways that had firmed up enough so that drives weren't hitting and jumping back two feet! Oh how these 63 year old joints love sunshine and warmth! Scored my best round so far, right on my handicap number. Now I actually feel like getting to work on my game!
    • Jordan Spieth lobs a marshmallow w/a wedge and eats it on its way down
      Maybe it's because I have kids. . but that's a dirty marshmallow.  Yecch.  Catch it in your hat or something next time.  Jeez. 
    • When a Pro Can’t Correct
      Ahh yes, I'm entirely familiar with this little game of golf swing whack-a-mole, lol.  I know it sounds cliché but you probably don't really understand just how good Jordan Speith is.  That sounds a little condescending but I truly don't mean it like that - I'm sure I don't, either.  He's playing a pretty different game than we do.  I imagine, if it was possible to somehow transplant our brains into Jordan Speith's body as he swings a club so we could feel what it feels like - it would freak us right out.  We'd be like . .WTH!?!, lol  And then we'd quit golf forever because we couldn't do that without our bodies snapping in half. 
  • TST Blog Entries

  • Images

  • Today's Birthdays

    1. golf82
      golf82
      (57 years old)
  • Blog Entries