Tapio, how do you test your rubber? Windup or stretch? Details.
Ray
--- In Indoor_Construction_at_yahoogroups.com, Tapio Linkosalo <tapio.linkosalo@...> wrote:
>
> On 24.3.2011 21:27, izgo wrote:
>
> > Tapio rubber tests show 09/2009 only 5% less than TanII 05/99, so the
> > may and june batch are a bit superior. hope this one is even closer than
> > that.
>
> Unfortunataly I did not get any 2009/05 or 2009/06 batch to test, but
> the 2009/01 and 2009/09 test quite similar, both within a half procent
> of each less than half procent from the best SS that I had tested
> before, the 2004/04. I actually managed to get a few pounds of 2011/01,
> and this tested ever so slightly better than 04/04. Unfortunately, while
> I was e-mailing FAI model supply, that batch was already sold out...
>
> But to summarize it seems to me that 2009 was consistent in the rubber
> quality, and SS has reached the best level it has ever been, that 5.5%
> below the 1999/05 batch energy return. So you still may see difference
> to Tan II, but I doubt that you could really tell the difference between
> the good batches of SS.
>
> The attached picture includes the test for 11/01. Note that the error
> bars indicate +- one standard deviation within the batch. However, this
> is calculated _before_ temperature correction, and as some TanII batches
> (especially May99) are tested in multiple small batches over a long
> period of time and varying temperatures, the larger standard deviation
> rather reflects the temperature effect. Within each sample batch, the
> variation in the energy return was consistent (less than 1%), so even
> 99/05 does not seem to have any variation to consider within the batch.
>
>
>
> -Tapio-
>
Received on Fri Mar 25 2011 - 14:22:03 CET
This archive was generated by Yannick on Sat Dec 14 2019 - 19:13:46 CET