Part 2 of 3: 2.2mm vs 2.0mm TT sponge thickness - Robot testing: throw height, trajectory & speed
ฝัง
- เผยแพร่เมื่อ 20 มี.ค. 2012
- Second in a three part series looking at the differences in performance between 2.2 and 2mm table tennis sponge thickness - using Giant Dragon Maxspin.
In this video we test to see if there are differences in terms of:
1. Maximum throw height
2. Trajectory - high arc or shallow
3. Speed
Using high speed footage we also look at why one of these sponge thicknesses is possibly slower and has a steeper throw arc and show the ball "visibly climbing up the top sheet surface".
We also identify problems with testing and comparing rubbers and why it's important not to look at just one factor, such as sponge thickness, when considering how or why a table tennis rubber performs as it does. In particular we look at tackiness, sponge hardness and thickness and show how different combinations of these factors can have significantly different results.
Other videos in this three part series are:
1. Physical properites including dome, curl, weight, top sheet, tacky test, grip test, cutting on a bubble in the top sheet and other possible quality control issues
and
3. Human testing - demonstrates how different people can rate the same rubbers performance.differently in terms of serving, returing serve, pushing, top spin driving, blocking, power loop, brush loop, smash, chopping and questions the relevance of generic speed, spin control ratings.
These videos will be released staggered. Part 3 to be released some time next week. - กีฬา
The amount of effort done to do this experiment is top of the notch. Massive respect.
I always love to see really honest testers when science is happening. Keep up the good work!
this is what i would love to see from donic, tibhar, butterfly and co
A lot of science. Really appreciate the hard work in this video. Thanks
An amazing amount of work went into this video ... thank you!
Thumb's up for this video! It contains the answers of many questions that I had before! Respect!
One of the best TT videos I have seen to decide what rubber thickness to buy!
Thank you 🙂
Very good job done... now I can easily decide what suits me 2.2 or 2...
Brilliant Video ! Thank you!
wow, this video is the real deal. no bullshit. no feelings. just facts and proof. really awesome
excellent job
This is great work.
Would be very interesting if you would Do this test again, nowadays, with New Roboter, New Rubbers.
Thanks
I think that the 2.0 is faster on the sheet of glass because less sponge means more effect from the hard glass
amazing video
Now this is informative !!
Amazing video thank you 🙏
Great video!!!
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.
Fascinating!
thank you for this. can you test more rubbers please.
Nice video
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
😊😊
Hi! Maybe you cand redo this test with more modern cameras, rubbers and balls? Thanks! Very interesting your test
can you compare carbon blades with 5ply and 6 and 7 ply
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.
ALWAYS...?
I believe a hard sponge will increase speed as it has a spring effect.
as far as i know galxay(yinhe)'s rubber has good quality control
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.
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.
What about sponge 0.8 ?
Do you remember the frame rate of the high speed camera?
depends on the camera used. If I'm shooting really fast footage it's 1000fps
thanks.
Vote if you prefer TEN 05 1.9mm than TEN 05 2.1mm !
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.
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.
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 ...
I'm switching reviews to my equipment testing channel 🙂