groovastic Posted October 21, 2006 Report Share Posted October 21, 2006 I ride UPZ boots and realy love them. The only problem is if it's very very cold outside, tey get hard as a rock, and it's almost impossible for me to carve in them. So I'm thinking of maybe getting new boots..? So, how would you compare Head to them? or to Deeluxe? Thanks Quote Link to comment Share on other sites More sharing options...
groovastic Posted October 21, 2006 Author Report Share Posted October 21, 2006 you got snow yet? no, but i'm going to austria on a glecher tomorrow :D but I hear it's quite warm even there :( Quote Link to comment Share on other sites More sharing options...
Sinecure Posted October 21, 2006 Report Share Posted October 21, 2006 Supposedly both the new Heads and the new UPZ boots use plastic that keeps its flexibility across a much wider range of temps than models of a few years ago. Marketing hype or reality? You decide. I suppose they couldn't make the claim if there weren't at least a degree of truth to it. Quote Link to comment Share on other sites More sharing options...
Arnaud Posted October 23, 2006 Report Share Posted October 23, 2006 The stiffness of any plastic used for shell molding will change with temperature. Depending of the plastic used (and it's price !) the range can be more or less wide, but anyway, it's temperature dependant. A possible way to reduce the variability is to use a spring system to control flex, instead of plastic stiffness / friction . Quote Link to comment Share on other sites More sharing options...
groovastic Posted October 24, 2006 Author Report Share Posted October 24, 2006 so do you prefere UPZ or Head? they have about the same plastic quality and they both have spring systems, right..? Quote Link to comment Share on other sites More sharing options...
Arnaud Posted October 24, 2006 Report Share Posted October 24, 2006 Never tested UPZ, but seen a guy with Virus boots. They looks very stiff. Less forward flex than Head Quote Link to comment Share on other sites More sharing options...
mnovak Posted October 24, 2006 Report Share Posted October 24, 2006 I have the newer Head Stratos Pros (2004?) and they don't seem terribly affected by temperature and I have been in some pretty cold weather (minus 35 Celsuis couple years ago!). The stock liners are pretty warm and comfortable (after some packing-in), which was a nice surprise so I didn't have to get thermos. I found the older Raichles more affected by temperature. Don't know about UPZ -- never even seen one in the flesh. My Heads are modded with a spring system, which is something I would highly recommend. Quote Link to comment Share on other sites More sharing options...
Arnaud Posted October 25, 2006 Report Share Posted October 25, 2006 Hi mnovak I have the newer Head Stratos Pros and they don't seem terribly affected by temperature [...] My Heads are modded with a spring system Sure that this is one reason which explain why the boots arenot affected by temperature. Stiffness of the spring is not temperature dependant. Quote Link to comment Share on other sites More sharing options...
terekhov Posted October 26, 2006 Report Share Posted October 26, 2006 Hi mnovak Sure that this is one reason which explain why the boots arenot affected by temperature. Stiffness of the spring is not temperature dependant. you are not right. sole length of raichles/deeluxe ****ty shells shrinks for over half the size (~5mm) when dropping from +10C to -25C. head plastic stays same length and same subjective stiffness. Quote Link to comment Share on other sites More sharing options...
Arnaud Posted October 26, 2006 Report Share Posted October 26, 2006 Sole length of raichles/deeluxe shells shrinks for over half the size (~5mm) when dropping from +10C to -25C. head plastic stays same length. I suppose you speak about thermal contraction. In this case, coefficient of thermal expansion is not very different from one plastic to another. So contraction should be quite similar. Quote Link to comment Share on other sites More sharing options...
Recommended Posts
Join the conversation
You can post now and register later. If you have an account, sign in now to post with your account.