or Connect
New Posts  All Forums:Forum Nav:

Skis "wearing out"? - Page 3

post #61 of 62
Quote:
Originally Posted by LUSST SKI View Post
 

Misundersanding - cyclic loaded skis were measured flex only, as no change here was found no torsional stiffness was measured, grinded completly.

 

The point is, grinding had much more effect than anything else.

 

Jurij


I'm confused -- I know you didn't do cyclic testing on torsional stiffness, as you explained earlier.  Are you saying you also didn't measure the effect of grinding on torsional stiffness?

post #62 of 62
Quote:
Originally Posted by LUSST SKI View Post
 

The kind of test you are referring is used for testing delamination of tip and tail - smashing the tip against steel plate.

No, I'm suggesting something more subtle -- a test that deforms the skis using shocking impacts, yet doesn't cause delamination.*  That, I suggest, might better replicate what skis experience than a conventional cycle test (or at least capture an aspect of what skis experience that conventional cycle tests don't).

 

*That's why I recommended using large blocks of wood to distribute the impact over the entire forebody and tail, rather than what you describe, in which a steel plate is use to concentrate impact forces at the tip.  And you can also reduce the impact force (and correspondingly increase the impact time, to achieve the same total amplitude of deformation), until you find a force regime well below that at which delamination occurs.

New Posts  All Forums:Forum Nav:
  Return Home
  Back to Forum: Ski Gear Discussion