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Effects of the hot-box treatment on ski flex

post #1 of 11
Thread Starter 
My skis feel softer after hotbox especially after the first few cycles. The way my shop does it is 5 hrs in low temp per cycle. My speculation is the prolonged exposure to low heat relaxes the component molecules...kind of like slow cook BBQ.

Am I imagining things here or can anyone confirm this from their own experience?
post #2 of 11

ski boots do the same thing.

post #3 of 11

I'll see your disconnect (boots =/= skis) and raise you: don't put your chocolate in the hot box, fer sure 

post #4 of 11
Quote:
Originally Posted by nochaser View Post

My skis feel softer after hotbox especially after the first few cycles. The way my shop does it is 5 hrs in low temp per cycle. My speculation is the prolonged exposure to low heat relaxes the component molecules...kind of like slow cook BBQ.

Am I imagining things here or can anyone confirm this from their own experience?


Well, just forget about any hot waxing or hotboxing.  Or could it be that any ski will become a bit more flexy no matter what?

 

Do you base this on actual skiing or just flexing them by hand?   Did you use some high tech. flex checking machine?

 

Then again you could be out of your mind.  What kind of ski are you talking about?

 

Also what is "low temp" as you say?  Were those skis built cold?  

post #5 of 11
Thread Starter 
Cheater race skis. The comparison was based on my hand flex of the skis fresh out of the wrappers versus after two 3-4 hr cycles of hotbox treatment and with plates/bindings mounted on top.
post #6 of 11
Quote:
Originally Posted by nochaser View Post

Cheater race skis. The comparison was based on my hand flex of the skis fresh out of the wrappers versus after two 3-4 hr cycles of hotbox treatment and with plates/bindings mounted on top.


Sounds like they are all broke in now.  You gonna' win!

post #7 of 11
Thread Starter 
Yes, the skis are great.

BTW, a quick correction...10 hrs total (5 per cycle) per my OP. I got it mixed up with my other, more recent hotbox done on different skis.
post #8 of 11

 

Maybe I should do a flex test next time I get some new skis.  Scientifically that is!  Be good.

post #9 of 11

Try taking an old pair (or a new pair you don't care about) and measure the camber.   Tie the ends together with a block in the middle to stretch the camber deeper.  Hot box them like that for several cycles then remove the ties and block that was stuffed in the middle.  Measure the camber and see if it has changed.  That would give a somewhat scientific accelerated view of how the heat impacts the flex.... or prove that it doesn't.  If you want to be extra scientific, have an identical control pair also tied together with a block but not hot boxed. Compare the two sets after exposure.

post #10 of 11

Good idea - you go first.

 

:D

post #11 of 11
Quote:
Originally Posted by crgildart View Post
 

Try taking an old pair (or a new pair you don't care about) and measure the camber.   Tie the ends together with a block in the middle to stretch the camber deeper.  Hot box them like that for several cycles then remove the ties and block that was stuffed in the middle.  Measure the camber and see if it has changed.  That would give a somewhat scientific accelerated view of how the heat impacts the flex.... or prove that it doesn't.  If you want to be extra scientific, have an identical control pair also tied together with a block but not hot boxed. Compare the two sets after exposure.


I think it would be good to place the ski on two points tip and tail, then place a given amount of weight in a given center position.  Then measure the amount of deflection.

 

I would not try to change the camber with a block since that's not how hot boxing is done.  Ever try to fix a bent ski?  Usually does not work,

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