A bunch of questions

Xanderngzien · Jul 20, 2017

1. What is sponge hardness. Is it the higher the number the harder the sponge? So a 39 deg h3 is softer than a 47 degree europe rubber?

2. Is boosting a h3 neo or buying a new h3 neo prov better?

3. How to test for flexibility on a blade?

MohdHafiz · Jul 20, 2017

Xanderngzien said:
1. What is sponge hardness. Is it the higher the number the harder the sponge? So a 39 deg h3 is softer than a 47 degree europe rubber?

2. Is boosting a h3 neo or buying a new h3 neo prov better?

3. How to test for flexibility on a blade?

1. Yes..the higher the number the harder the sponge. 40 deg h3 is harder than 39 deg h3.

2. Depends on your budget..but every rubber will loosing the boosting effect in certain period. Boosting will revive the sponge.

3. You need to play the blade with the same rubber to feel the flexibility difference from other blades..

Sent from my C6903 using Tapatalk

romanzdk · Jul 20, 2017

Xanderngzien said:
So a 39 deg h3 is softer than a 47 degree europe rubber?

not necessarily. it depends. every brand has its own scale of hardness, so you cant tell. you could tell surely when comparing rubbers from one brand. however, in general, chinese scale is smaller, so 40deg h3 is much more harder than 40deg ESN rubber.

Airoc · Jul 20, 2017

romanzdk said:
not necessarily. it depends. every brand has its own scale of hardness, so you cant tell. you could tell surely when comparing rubbers from one brand. however, in general, chinese scale is smaller, so 40deg h3 is much more harder than 40deg ESN rubber.

Exactly.

Generally, you can add roughly 10 on top of Butterfly hardness to compare with ESN (Tensor) hardness, and probably even as much on every Chinese hardness given.

A 40 degree Tensor rubber is soft, whereas a 40 degree Hurricane is pretty hard.

UpSideDownCarl · Jul 22, 2017

romanzdk said:
not necessarily. it depends. every brand has its own scale of hardness, so you cant tell. you could tell surely when comparing rubbers from one brand. however, in general, chinese scale is smaller, so 40deg h3 is much more harder than 40deg ESN rubber.

Airoc said:
Exactly.

Generally, you can add roughly 10 on top of Butterfly hardness to compare with ESN (Tensor) hardness, and probably even as much on every Chinese hardness given.

A 40 degree Tensor rubber is soft, whereas a 40 degree Hurricane is pretty hard.

Pretty much. But it is not that every brand has a different scale. The durometer scale used for Chinese rubbers is just a different scale than used for all the other rubbers.

This page may explain why if you are interested to read about durometer measurements:

https://en.wikipedia.org/wiki/Shore_durometer

So a 40-degree DHS rubber would be harder than a 47-degree ESN rubber because they are using different scales to measure the hardness or ability to resist indentation.

Suga D · Jul 22, 2017

GiangT has posted this here a while ago. It explains how different sponge hardnesses can be compared.

Giangt said:
Well the hardness for the sponges are standardized, but the are given in both Shore A or C. In Europe they often use Shore C where as in Asia they use Shore A.
I have attached a picture showing the scale where Shore C is on the left and the equivalent in Shore A is on the right.

View attachment 12546

I am wondering why creating one no. For each rubber hardness? Some companies get away just noting the hardness on the packing... maybe that is public service

Baal · Jul 22, 2017

Probably the best clue to flex short of playing it is the tone it makes when you bounce a ball on a bare blade (or knock it against your head). It is not perfect, but lower tones often come from flexier blades. Also measure thickness. In general, blades with composites are stiffer. You can use a cell phone app to measure the dominant frequency of the tone too. There are recent threads here on that.

Tony's Table Tennis · Jul 23, 2017

1. answer above with the scale, 40 dhs is like 50 euro style hardness
2. boost your old h3 and see if you enjoy it
3. no joke, hit the blade on your head and see if it vibrates - if yes, its flex

number 3 is something we learnt since small

Hamasaki_Fanz · Jul 23, 2017

Tony's Table Tennis said:
1. answer above with the scale, 40 dhs is like 50 euro style hardness
2. boost your old h3 and see if you enjoy it
3. no joke, hit the blade on your head and see if it vibrates - if yes, its flex
number 3 is something we learnt since small

which one? the head or the blade? xD

ttmonster · Jul 23, 2017

LOLOL ... its the blade , the natural frequency of the head is too low ... so there is no chance of resonance

Hamasaki_Fanz said:
which one? the head or the blade? xD

Search

Search

A bunch of questions

Xanderngzien

Xanderngzien

Member

MohdHafiz

MohdHafiz

Member

romanzdk

romanzdk

Member

Airoc

Airoc

Well-Known Member

UpSideDownCarl

UpSideDownCarl

Well-Known Member

Suga D

Suga D

Well-Known Member

Baal

Baal

Well-Known Member

Tony's Table Tennis

Tony's Table Tennis

Well-Known Member

Hamasaki_Fanz

Hamasaki_Fanz

Active Member

ttmonster

ttmonster

Well-Known Member

Similar threads