Veneer topsheets, wood sidewalls and increasing rocker
Posted: Fri Jan 25, 2013 1:49 pm
Hi everyone just thought I would run past you guys a theory/problem I am having.
Most of my skis seem to be getting more rockered with time. It isn't happening on the ones I pressed room temp with west but is on the heat cured ones with sicomin epoxy.
I have heated them all from the top only so appreciate the loss of camber/gain in rocker from this. However it seems the rocker is increasing more with time.
It seems most pronounced on the skis with veneer topsheets.
It is hot where I live (regularly over 40C/104F or more) and I have noticed that over summer the bolts on my press forms (MDF) have loosened as the wood has dried and shrunk.
I wondered if the same was happening on my veneer tops. The veneer dries in the hot weather and contracts. Contraction on the top surface tends to rocker the ski or reduce its camber. It seems most pronounced in tip and tail perhaps where core thickness is less so less strong at overcoming the pulling force of the topsheet. (I also wondered if a drying core with exposed sidewalls could compound this phenomenon).
Any support for this? Or other ideas.
I will take the skis into the cold next week (-15C/5F) and higher humidity and see what they look like.
Most of my skis seem to be getting more rockered with time. It isn't happening on the ones I pressed room temp with west but is on the heat cured ones with sicomin epoxy.
I have heated them all from the top only so appreciate the loss of camber/gain in rocker from this. However it seems the rocker is increasing more with time.
It seems most pronounced on the skis with veneer topsheets.
It is hot where I live (regularly over 40C/104F or more) and I have noticed that over summer the bolts on my press forms (MDF) have loosened as the wood has dried and shrunk.
I wondered if the same was happening on my veneer tops. The veneer dries in the hot weather and contracts. Contraction on the top surface tends to rocker the ski or reduce its camber. It seems most pronounced in tip and tail perhaps where core thickness is less so less strong at overcoming the pulling force of the topsheet. (I also wondered if a drying core with exposed sidewalls could compound this phenomenon).
Any support for this? Or other ideas.
I will take the skis into the cold next week (-15C/5F) and higher humidity and see what they look like.