Part 2 of 3: 2.2mm vs 2.0mm TT sponge thickness - Robot testing: throw height, trajectory & speed

[@rilcycopa]

The amount of effort done to do this experiment is top of the notch. Massive respect.

[@kevinocta9716]

I always love to see really honest testers when science is happening. Keep up the good work!

[@HoangLe-om3id]

A lot of science. Really appreciate the hard work in this video. Thanks

[@KarthikVenkataraman]

One of the best TT videos I have seen to decide what rubber thickness to buy!

[@PathfinderPro]

Thank you 🙂

[@tafo9520]

wow, this video is the real deal. no bullshit. no feelings. just facts and proof. really awesome

[@barrycroucher602]

Extraordinary video . Amazing work ! 👍

[@jseaz]

An amazing amount of work went into this video ... thank you!

[@rajahua6268]

I learn something new today....the climbing effect on tackiness.....interesting thanks for the great analysis

[@niklaskras5498]

this is what i would love to see from donic, tibhar, butterfly and co

[@icefalcon2243]

Amazing video thank you 🙏

[@florinpasca2000]

Would be very interesting if you would Do this test again, nowadays, with New Roboter, New Rubbers. Thanks

[@Ioan.Nicolae]

Thumb's up for this video! It contains the answers of many questions that I had before! Respect!

[@mrmr1964]

Outstanding stuff guys. Very informative. As a Tenergy 05 2.1mm (FH - Black) and Rakza 7 Soft 2.0mm (BH - Red) I'd love to see a test on those. Perhaps Butterfly and Yasaka could pay you guys to do that! Thanks Again.

[@batman4784]

Very good job done... now I can easily decide what suits me 2.2 or 2...

[@mitchy98]

I think that the 2.0 is faster on the sheet of glass because less sponge means more effect from the hard glass

[@carlogabriel]

thank you for this. can you test more rubbers please.

[@magicmike1122]

can you compare carbon blades with 5ply and 6 and 7 ply

[@NoTengoIlusiones]

Brilliant Video ! Thank you!

[@Hralm]

Hi! Maybe you cand redo this test with more modern cameras, rubbers and balls? Thanks! Very interesting your test

[@TheNaKio]

This is great work.

[@dj1jesus375]

Fascinating!

[@manudehanoi]

excellent job

[@pnachtwey]

Another excellent video! Good work! I am still trying to digest everything. The part about the 2mm sponge being faster doesn't surprise me but the test is flawed because the 2mm and 2.2mm sponge are different hardnesses so they are definitely not made of the same material. Still sponge absorbs energy so I would expect a 2mm sponge to ALWAYS be faster than a 2.2mm sponge IF they are made of the same material. I am interested in how you made the overlaid videos. More later.

[@shanelawson5072]

ALWAYS...? I believe a hard sponge will increase speed as it has a spring effect.

[@gurpreetmann6629]

I have kokataku 868 hercules blue sponge i boosted with 3 layers of paraffin oil. Slightly tacky but spin is really severe immense. It cost me 6$ on aliexpress i have ordered 8 of them. Boosted effects still there even after 3 months however less during first 3 weeks of play. Medium tacky i love it 😊😊

[@desert1987]

amazing video

[@a1988ditya]

Now this is informative !!

[@lematanggamer7949]

Saya pernah mencoba rubber dengan sponge dan rabber tanpa sponge dengan karet yang sama, tapi sudut lemparannya tidak berubah??

[@rishundola9526]

Great video!!!

[@aroundjava7937]

What about sponge 0.8 ?

[@hjsteiner]

Do you remember the frame rate of the high speed camera?

[@PathfinderPro]

depends on the camera used. If I'm shooting really fast footage it's 1000fps

[@BrokenandtheBeast]

Nice video

[@pnachtwey]

I understand the problem with the sponge quality and not getting what you think you are buying. I bought a 1mm 1.5mm 1.8mm 2mm and 2.2mm HRS sponges just to find that they weren't the same hardness. My plan was to do a similar test but it is hard to tell the difference between a 2mm and 2.2mm sponge. I was going to stack the sponges so I could have up to 8mm of sponge. The difference between a 2mm and 8mm sponge, and various thicknesses in between, should be dramatic. E-mail me on gmail.

[@junbizkit1797]

Try to consider these things for precise and accurate result: 1. Ball size, seem or seemless, shape or roundness and weight must be all "uniform"... not all balls are the same even with the same batch of production. 2. Please double check and do "tests" for the robot's accuracy and performance before the experiment. 3. Use at least 2 constant variables like the same thickness and the same tackiness "at a time". Dont mixed-up the properties for the rubber same experiment. Example: Rubber. Tackiness Thickness 1. Rubber a yes. 1.8 2. Rubber b yes. 1.8 3. Rubber c yes. 1.8 4. Rubber d yes. 2.1 5. " e. yes 2.1 6. " f yes 2.1 7 " g no 1.8 8. " h no. 1.8 9. " i. no 1.8 " no 2.1 " no 2.1 " no 2.1 Variables are racket angle, thickness, tackiness, speed of the ball, spin of the ball, etc.

[@wrongitstea]

as far as i know galxay(yinhe)'s rubber has good quality control

[@ShamanMap]

thanks. Vote if you prefer TEN 05 1.9mm than TEN 05 2.1mm !

[@ApiolJoe]

Unfortunately, I expect most of your observations to be caused not by the thickness of the sponge but by its hardness (since you discovered it was different in the previous video). I'm afraid it's very difficult to draw any conclusions on the effect of thickness in this case.

[@dolchmesser]

What TT paddle is made with glass? How can you imagine to test a product designed to interact with wood, with a model made with glass?

[@PathfinderPro]

Because I'm testing the rubber and not the blade so you need something which has a COR as cost as possible to 1 and glass was what I had closest to 1. If I used a wood blade the results would be specific to that wood blade, are least this way I'm trying to isolate the properties of the rubber. Not easy and work in progress trying to factor in all the elements that impact on the performance of table tennis equipment.

[@michaelleong100]

rubber is a natural product so even with strict and similar chemical formulations the characteristics of every batch may still differ to a certain degree which may affect the tackiness and performance of the rubber. Even every batch of wood differ. Anyway TT is an art and not a science and depends greatly on handfeel. These tests should only be taken as a general guide. Having said that let us all just enjoy this great game, both for exercise and fun. Cheers.

[@z0uLess]

I wish this channel had made similar videos on newer gear, or that some other channel would have been inspired by it. There seems to be so much branding, idol-worship, hype ...

[@PathfinderPro]

I'm switching reviews to my equipment testing channel 🙂