OpenSwing: 3D printed swing weight machine

[fritzhimself]

If you have 2 rackets, they weigh exactly the same, and both are supported at the same distance from the butt, and measure the weight at the same distance from the butt cap and they both weigh exactly the same how far off do you think the balance will be? Keep up.

EDIT: If you’re still using your RDC to measure balance you’re way behind.

Now this is getting ridiculous. You are the world's biggest bean counter.
No one in this world can notice a difference of five hundredths of a millimeter in balance.
That's something for people who have no idea about tuning and only focus on numbers.
I can also measure and adjust my racket to within a hundredth of a gram on two scales.
If the balance is measured differently by 0.3 mm, the rackets are adjusted for all tennis players in the world and no one will feel the difference.
BTW, we're talking about the thickness of a hair—0.05 mm!

 

[Irvin]

............

Now this is getting ridiculous. You are the world's biggest bean counter.
No one in this world can notice a difference of five hundredths of a millimeter in balance.
That's something for people who have no idea about tuning and only focus on numbers.
I can also measure and adjust my racket to within a hundredth of a gram on two scales.
If the balance is measured differently by 0.3 mm, the rackets are adjusted for all tennis players in the world and no one will feel the difference.
BTW, we're talking about the thickness of a hair—0.05 mm!

If your using 2 scales you creating more error. I started using 2 scales but noticed at time there were differences in the 2 scales. Just placing an object at a different point on the scale could result in a different result.

 

[benfa94]

Quick update, using the new springs and a new way to calculate swing time i manage to get repeatable measurements of swing time with +- 2ms which should be quite good.
Unfortunately even with this accuracy with my current calibration tools and process i'm still not getting the results i expect.

My only guess right now is that the my calibration tools are not as accurate as they need to be to properly calibrate the tool.