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Importance of velcro-spoiler during Vacuum Molding?

post #1 of 3
Thread Starter 

Hello, I was about to jettison the Velcro spoilers prior to vacuumization, before I realized that they take up an obvious "pocket" of space in that part of boot.  So I just left them in, and went with the recommended forward lean.

 

But on here and TGR I've read people that say the Velcro spoilers are the root of all evil, and go straight to the trash.  Yet they seem so integral to the construction of the vacuum.

 

What are your thoughts on the spoiler?

post #2 of 3

Alpine

 

Spoilers are used by racers to increase forward lean.  this will push your knees forward in a stock off the shelf boot that has a preset amount of forward lean.  In your case you have set up the boot with the recommended amount of forward lean with the spoiler in, if you were to remove it then you would end up with less forward lean---might be good---might not.  Forward lean can move your COM (center of mass) forward or rearward over the ski/boot center---this is a very finite spot to be located.  

 

What is the circumference of your calf at the top of the liner? This enters in to the net forward lean of your lower leg.

 

What is the forward lean of the boot now, if you were to measure from a veritcal line to the back of the liner at the top of the shell?

 

mike


Edited by miketsc - 1/19/13 at 1:47pm
post #3 of 3

I take them out for most Vacuum fits - unless the leg/calf is very low volume.  I don't complete buy that Velcro spoilers are trash, as they are useful for figuring out where to place a permanent shim/forward lean/wedge. 

 

One can go ski the Velcro patch and play with the position (if needed at all) before a permanent solution is devised.

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