STIFF UPPER LIPS
width of wood core strips: n/a
epoxy: QCM; resin: EMV-0049; hardener: ECA – 408 (45 minute set); 4
to 1 mixing ratio
bladder pressure: n/a
duration of pressing: 24 hours
other: Titanal strips (1.0mm x 50mm x 1600mm) laminated above and
below wood core
GRAPHICS: Flannel with rice
Kelvin Wu and Kam K. Leang (Big Kam)
MANUFACTURED DATE: September 2005
COMMENTS written by Kelvin Wu:
We designed the stiff upper lips to be an all around ski that can handle all
conditions. It is also our first attempt to create a ‘production’ ski. We are
planning on using it as a test bed for different core materials and designs. By
varying the cores and keeping the shape the same, we should be able to see what
effect the core has on ski performance.
This pair was made with a maple and birch core and a thin
sheet of Titanal on top of the core. We also tried a new epoxy, which ended up
causing some problems. After pressing for 24 hours, I took them out and the
tails started to delaminate just from the stress of the edges. Apparently the
QCM epoxy requires a very long (>2 weeks @ room temp) cure time and would
require about 3 days in the press before it was safe to take out.
After 3 weeks the epoxy definitely got a lot stronger and I
was able to re-press the skis by using a little west systems in the delaminated
portions. It turned out better than I expected and you cannot see the
delamination areas. We’ll see how it holds up to use though.
November 5, 2005 Steven's
Pass, WA A group of us took advantage of the huge dump of snow that
Washington has gotten and check out Stevens Pass before they opened. It was also
a good opportunity to test the stiff upper lips and the Daddy's Little Girls.
There was about 4' of very soft snow and you would immediately sink to your
waist if you took off your skis. Skinning in this deep snow made progress very
slow and eventually got too steep and deep to make any upward progress. We were
able to get three good runs in though.
Justin was skiing the Stiff Upper Lips, for most of the day, but we were able to
swap for the second run. The Daddy's Little Girls seem to want to submarine in
the deep soft snow and made if very difficult to ski. I think this is due to the
huge camber, slightly lower tips, and I also mounted the binding on running
length center, which put the binding about 2 cm forward of chord center. I
basically had to lean way back and parallel turn to keep from face planting.
Justin had the same experience with the submarining.
The SULs were completely different and did not dive. These skis have normal
camber, and the binding were mounted on chord center. They are a very fun ski.
Here's a picture of Justin Davis working the Stiffs. Sorry about the blurry
picture - lighting was bad.