Re: Re: Comparing Rubber Batches

From: Tapio Linkosalo <tapio.linkosalo_at_helsinki.fi>
Date: Thu, 3 May 2007 09:24:31 +0300 (EEST)

On Fri, 27 Apr 2007, ewmonda wrote:

> I entered the data I had already collected and came up with a value
> for 7/02 and 1/05 of about 3450 ft-lbs/lb. In comparison, the 6/06
> was down around 3000 ft-lbs/lb. Do these numbers make sense with
> what others have seen and can these batches really be so much worse
> than the good batches of TAN II?

I have been testing my wakefield motors for quite a few years now, and my
results agree with Freds. I use a stretch method, as winding would be too
hard for multi-strand wakefield motors... 1999 was the prime year of
rubber, and the worse Tan II may be up to 6% down from those batches. The
best Super Sport that I have seen has been up to the level of worst T2, or
about 6% down from best T2, but the worse batches are another 6% down. The
latest SS, Jan07 was a big disappoinment, it was supposed to be ok, but my
tests strongly disagreed.

See www.helsinki.fi/~linkosal/rubbertest.GIF



-Tapio-
Received on Wed May 02 2007 - 23:24:35 CEST