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By Ty_Webb ·
Correlation might be there, but I don't think that really helps you get where you want to be. For example, I see a 67.4 from the sound app going with a PRGR reading of 79.0 and a 67.2 from the sound app going with a 85.0. Bear in mind most people are going to be swinging a club at roughly similar speeds most of the time, so the range of speeds with a 7 iron swing might be say 88-91 for a given player. That's fairly tight and just based on what you're showing above, you're looking at sound numbers that are going to be wider than the spread of speeds for the same exact speed every time. You've got a 6 mph swing speed difference in the table with a 0.2 difference in sound and going the wrong way. I don't think given that you'll get anything valuable out of this, even if you could set it up perfectly every time. Having said that, I'd think that your own ears are probably better at figuring out how loud the woosh is than the decibel meter. Our ears are very good at pinpointing a specific frequency to focus on, which the sound app won't do. Your ears are also going to be permanently about the same distance from the clubhead. It's not going to be scientific, but you could probably tell whether one swing is faster than another based on how they sound if that's what you're focused on. Certainly not going to be useful session to session, but swings back to back if you're just trying to swing faster than you did last time, you might have a chance of telling that from the sound you hear. -
By iacas ·
Eh. Do your hips back when they swivel like he demonstrates? Or do they tend to go forward as they rotate? -
By iacas ·
Uh, that's not what happened. I'm highly dubious about how your results would work going forward, you showed nothing about your setup, etc. I trust the physics (your 3 dB over a meter is off substantially) and sound engineers over claimed "good" results. -
By GolfLug ·
I actually really like the video. I feel like it speaks to my own issues of hip movement (lunge towards the ball). I think he also presents a very good and detailed explanation of the why from biomechanical perspective, not forcing the clubs in position and instead let it work a proper planar path by providing it space (hip swivel) the most efficient way. As far as tech speak/catch phrases etc., that some may not like, it doesn't bother me and even necessary. For eg., the spiral line sounds like it is the same thing as a kinematic chain, but directionally specific along with the set of muscles joints it engages. If the club is not dynamically aligned to the 'spiral line' it will force other compensation like locking joints, etc. That's simple logic, and from my perspective not brought up enough. Good stuff. -
By p1n9183 ·
Thanks! it was a fun experiment and I hope is going to be useful for people that like to go down the rabbit hole like i do but can't afford a launch monitor or even a cheap speed meter. Of course I'm glad the results were positive, even better than I spected, but it is funny to see that only you took the time to post after the results were given, the only one in the thread that was open minded about the idea. The other posters that daily brought down the idea without proper arguments or proof, disappeared after been confronted with actual data. Maybe they are testing this by themselves and are in shock that they are getting the same results as me!
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