Sponge hardness table

haggisv · **Posted:** 24 Nov 2007, 09:13

Here is a growing list of sponge hardness levels of rubbers, as measured with my durometer. I've explained in there that adjustment needed to be made to the values and why, but the results tie in quite well with my expectations.

I'll continue to add values as I get access to them... Waht do you think?:

Sponge hardness measurement table

Hobbes · **Joined:** 15 Jun 2007, 11:49 **Posts:** 911

Awesome! This'll be a really awesome guide once it fills up with a bit more stuff. How much was that durometer anyways?

tiwaz · **Joined:** 24 Apr 2007, 16:34 **Posts:** 141

See if you can measure SP transcend.

Hobbes · **Joined:** 15 Jun 2007, 11:49 **Posts:** 911

If you're taking requests, could you measure the hardness on Desto F3 and Actor?

alfie · **Joined:** 15 Dec 2006, 15:08 **Posts:** 337

good info Alex it seems the H3 is not so rock hard afterall,is the orange the commercial version?

haggisv · **Posted:** 24 Nov 2007, 16:08

Hobbes wrote:

Awesome! This'll be a really awesome guide once it fills up with a bit more stuff. How much was that durometer anyways?

The durometer was about AUD$250...although it looks of good quality, I don't know why they are so expensive. It may be that the calibration is expensive perhaps...

haggisv · **Posted:** 24 Nov 2007, 16:11

alfie wrote:

good info Alex it seems the H3 is not so rock hard afterall,is the orange the commercial version?

Yes it's the commercial version with the orange sponge, just noticed I didn't mark it in. Only the blue is a little softer... was nice to actualy see my readings tie up with my impression, since it can be real hard to judge... Of course as you know there seems to be quite a bit of variation across the orange sponge version...

Jinyang · **Posted:** 26 Nov 2007, 05:41

alex, is it possible if u measure the hardness after a go of super-priming/ FTB/ CTEing as well?

Joo Se Kev · **Posted:** 26 Nov 2007, 06:44

Nice chart! Combine this with silver's database and you'll have a really usefull reference source for rubbers.

Skippy · **Joined:** 14 Jun 2007, 10:08 **Posts:** 436

How are you measuring this? Are you cutting a corner of the rubber and removing the rubber from the sponge then using the durometer? I'm not questioning your results. Just wanting to know what your method is?

Servio · **Posted:** 26 Nov 2007, 06:58

sticky this?

haggisv · **Posted:** 26 Nov 2007, 07:01

Jinyang wrote:

alex, is it possible if u measure the hardness after a go of super-priming/ FTB/ CTEing as well?

Yes I will take these measurement every time I do a treatment now.

For the 999 Nat, it went from 44 to 39 after the booster treatment. That was 3 layers, 2 thick 1 thin...which is a little risky... I won't use as many layers on this rubber again since it risks the topsheet from coming off.

Hobbes · **Joined:** 15 Jun 2007, 11:49 **Posts:** 911

haggisv wrote:

Jinyang wrote:

alex, is it possible if u measure the hardness after a go of super-priming/ FTB/ CTEing as well?

Yes I will take these measurement every time I do a treatment now.

For the 999 Nat, it went from 44 to 39 after the booster treatment. That was 3 layers, 2 thick 1 thin...which is a little risky... I won't use as many layers on this rubber again since it risks the topsheet from coming off.

!

That's some powerful stuff.

Jinyang · **Posted:** 27 Nov 2007, 06:03

[quote="Hobbes"][quote="haggisv"][quote="Jinyang"]alex, is it possible if u measure the hardness after a go of super-priming/ FTB/ CTEing as well?[/quote]

Yes I will take these measurement every time I do a treatment now.

For the 999 Nat, it went from 44 to 39 after the booster treatment. That was 3 layers, 2 thick 1 thin...which is a little risky... I won't use as many layers on this rubber again since it risks the topsheet from coming off.[/quote]
!

That's some powerful stuff.[/quote]

HOLYMOLY!! i want some falco t.booster for christmas!!!
btw, alex: Rubber arrived today safe and sound ^^ thanks, will be ordering from you in the future

haggisv · **Posted:** 27 Nov 2007, 08:21

Servio wrote:

sticky this?

Good idea!

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