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PostPosted: 22 Jan 2014, 06:40 
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No, I meant your Durometer readings. Sriver measures at - what did I say? 54, most of the 729 offerings don't measure that hard. The old 729 Super FX isn't on the scale (probably hasn't been measured yet).

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PostPosted: 22 Jan 2014, 07:29 
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Yes you're right. I must update the table, as I've got a lot of values to add, just haven't has time to get around to it. :oops:

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PostPosted: 27 Jan 2014, 17:39 
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Very interesting. Just got me a sheet of 729FX Super. Well, it's NOT the old 729 - I have one of the old sheets (the topsheet is starting to come loose from the sponge after all these years). The indentification strip says only "729", not "729FX", and there's no "Super" on the other side. This topsheet still exists - it's offered with the different soft "Cross" sponge in the "batwings" packaging as a "training rubber":

Image

(That's got to be the biggest "lot" sale I've ever seen on aliexpress.com. Not particularly cheap, either - I've seen this sheet go for around $4.50. So Liang Jialiang sells rubber sheets on aliexpress. Interesting. )

So I wonder - CAN you get the original 729 topsheet with the original hard blue sponge?

Iskandar


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PostPosted: 02 Mar 2014, 15:16 
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The Sponge Hardness Table has finally been updated, with now over 400 entries!
Although it's been a while since it was updated, I've been collecting values all this time, and writing them down, I just didn't get around to actually updating the table.
A lot of the latest rubbers have been added, so hopefully you'll find the ones you looking for.

A big THANK YOU to those people that have been giving me offcuts of their rubbers, so that I could measure them and add them to the table! :clap:

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Setup1: Re-Impact Smart, Viper OX, Victas VS 401 Setup2: Re-Impact Barath, Dtecs OX, TSP Triple Spin Chop 1.0mm Setup3: Re-Impact Dark Knight, Hellfire OX, 999 Turbo
Recent Articles: Tenergy Alternatives | Tenergy Rubbers Compared | Re-Impact User Guide | Novel way to glue OX pips


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PostPosted: 28 Jun 2017, 09:11 
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Are there multiple hardness standards used by manufacturers? It seems that, for example, a chinese rubber advertised as a 40-degree may actually be "harder" than a european rubber advertised as a 47 degree.

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PostPosted: 28 Jun 2017, 09:44 
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Big_Fat_Loop wrote:
Are there multiple hardness standards used by manufacturers? It seems that, for example, a chinese rubber advertised as a 40-degree may actually be "harder" than a european rubber advertised as a 47 degree.

Yes they do use multiple standards, which is the main reason for this project.

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Setup1: Re-Impact Smart, Viper OX, Victas VS 401 Setup2: Re-Impact Barath, Dtecs OX, TSP Triple Spin Chop 1.0mm Setup3: Re-Impact Dark Knight, Hellfire OX, 999 Turbo
Recent Articles: Tenergy Alternatives | Tenergy Rubbers Compared | Re-Impact User Guide | Novel way to glue OX pips


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PostPosted: 28 Jun 2017, 10:22 
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For the newer rubbers not listed perhaps there is a way to convert from one standard to another ... ideally it would be a linear conversion factor so one could just add or subtract degrees to compare more accurately ... but I suspect the manufacturers won't make it easy. Thanks for the great job.

haggisv wrote:
Big_Fat_Loop wrote:
Are there multiple hardness standards used by manufacturers? It seems that, for example, a chinese rubber advertised as a 40-degree may actually be "harder" than a european rubber advertised as a 47 degree.

Yes they do use multiple standards, which is the main reason for this project.

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Blades: BTY Adolescen
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Glue: rubber: 2 layers of TearMender; blade: 1 thin layer of Elmers RC.


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PostPosted: 28 Jun 2017, 11:42 
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Yes you're right, not all the scales are linear. I did post one conversion chart here somewhere, which gave comparisons between 2 standards... I'll have to see if I can find it.

Edit: Here it is: viewtopic.php?f=44&t=23663

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Setup1: Re-Impact Smart, Viper OX, Victas VS 401 Setup2: Re-Impact Barath, Dtecs OX, TSP Triple Spin Chop 1.0mm Setup3: Re-Impact Dark Knight, Hellfire OX, 999 Turbo
Recent Articles: Tenergy Alternatives | Tenergy Rubbers Compared | Re-Impact User Guide | Novel way to glue OX pips


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PostPosted: 28 Jun 2017, 12:09 
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Got it, thanks. There is a conversion pattern between the 2 standards but unless new sponges are outside these ranges (<34 or >41 on DHS scale) hopefully we can still use the table as is.

haggisv wrote:
Yes you're right, not all the scales are linear. I did post one conversion chart here somewhere, which gave comparisons between 2 standards... I'll have to see if I can find it.

Edit: Here it is: viewtopic.php?f=44&t=23663

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Blades: BTY Adolescen
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Glue: rubber: 2 layers of TearMender; blade: 1 thin layer of Elmers RC.


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PostPosted: 28 Jun 2017, 15:22 
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Somebody posted a conversion table between the two hardness scales. Let me see… yes, viewtopic.php?f=44&t=23663 has it.


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