Judy et. al.
Looking at the data in the table provided by the mfr. shows an ultimate strength
of 38 ksi and a yield strength (approx. point where permanent deformation takes
place) of 35 ksi. This is less than a 10% difference
If I interpret this correctly, those of you worrying about causing a permanent
bend in your mast need not worry much about that. These masts are going to bend,
bend, bend a little more and SNAP!
Bummer.
Dave Kautz
P-15 #1632 "Tilly Lucy"
Palo Alto, CA
______________________________ Reply Separator _________________________________
Subject: P19 Mast Specs ONLINE at Judy B's Website.
Author: Non-HP-JBlumhorst (JBlumhorst@aol.com) at hp-boise,mimegw7
Date: 2/9/99 11:09 AM
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West Wight Potter Website at URL
http://www.lesbois.com/wwpotter/
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Dear Potter Gang,
Up til now, we've all (me included) been opining without any hard data. Now,
with the kind assistance of Scott at IM, I was able to obtain the technical
specs on the P19 mast.
Scott informed me that he has had not a single warranty claim yet that he
attributed to the backstay as installed by IM.
To read the technical specification for the P19 Mast, go to
http://members.aol.com/dblumhorst/page/P19MastSpec.htm
or click on the link below
<A HREF="http://members.aol.com/dblumhorst/page/P19MastSpec.htm">P19 Mast
Secifications</A>
NOW, PLEASE,
Let's hear from those engineers out there on the issue of whether or not the
mast is structurally adequate for using an adjustable backstay.
Roulez les bonnes temps,
Judy B.