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[100 not out]

I had a conversation with James Laver regarding this once, apparently he has a grading system based on rebound. He said he used ball bearings.

[S Taylor3]

I'm not questioning anyone here, but how can we say a single test on a single bat will not give a true reflection of performance, yet we happily state 'this one mallets well, this has pro ping' etc etc?

Devil's advocate I know.

[Canners]

if someone could come up with a reliable method for grading 'ping' on bats we could then have a true grading system- but im not sure this is ever going to happen

[tim2000s]

I'm not questioning anyone here, but how can we say a single test on a single bat will not give a true reflection of performance, yet we happily state 'this one mallets well, this has pro ping' etc etc?

Devil's advocate I know.

Fair point. Again, what I'm really investigating is the effect of knocking in on two similar bats for the first part. There will be natural willow variations, but there are ways of managing this variation.

In addition, I'd like to test ageing but that also comes with its own problems...

Still in the design stages so advice and comment is welcome!

[Buzz]

happy to volunteer my icon for your test

[norbs]

Good plan ;-)

Clamping position, grip tightness and handle stiffness

[tim2000s]

happy to volunteer my icon for your test

What grade is it again?

[S Taylor3]

Good plan ;-)

Clamping position, grip tightness and handle stiffness

Would you grip handle or blade? Thinking out loud but if you gripped high up the blade then any variations in handle might be negated?

Interesting idea but so much to consider.

[Buzz]

606, but taps up a treat.

[norbs]

Coefficient of Restitution is made of loads of stuff but for Tims tests where the bat remains the same it will be a solid constant.  For different bats, even from the same manufacturer, it becomes very complex and you cant really simplify the test like this to measure performance

[Manormanic]

I'm going old school physics gcse approach, using gravity to provide acceleration and the classic move a trapdoor out of the way to ensure consistent drop.

Nowt high tech like firing ball bearings!

got to make sure you hit the sweet spot perfectly for a like for like test - and thats difficult with the trapdoor method!

[Talisman]

Very hard to do and will not produce any clear results but will be a whole lot of fun.

[tim2000s]

Depends on how you intend to operate your trapdoor method, the size of you projectile and the truth in the line that pressing is consistent in such a fashion that the scoop works...

[Canners]

Tim you've got far too much time on your hands

[tim2000s]

No scanners, once I've had brain juice o just think too much... I think I share this with Norbs...