Cracked boot, plastic welding?

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Simon
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Cracked boot, plastic welding?

Post by Simon » Monday 11 August 2008, 12:04

Hello

I know it’s summer, but I need your help!

The last day of my season on the Pitztal glacier in May was too much for my Indy. The shell of my rear boot cracked just above the heel. The crack is about 5 cm long and I did not notice anything on riding!

Now I had the idea to weld the plastic. The problem is, I don’t know the sort of boot plastic, is it PE, PA, PU or something else? I couldn’t find any indications like on automotive plastics.

Has anybody already done this or can recommend a company for plastic welding?

Yes, new ones are already in stock, but I'd like to try to repair this crack!

Thanks
Simon
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Cracked Indy.jpg
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eaglefly
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Post by eaglefly » Monday 11 August 2008, 19:50

Just use your new boots, this crack is a sign it's time to change :wink:
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Post by starikashka » Tuesday 12 August 2008, 13:19

+1 - repair does not make sence as the risk is not worth it

Use intecs with your new boots.

BTW - how often such defect appears?
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Post by pokkis » Tuesday 12 August 2008, 14:38

+1 i would not risk my knees riding with such scary setup. Crack will certainly go worse.
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Post by ICERIPPER » Tuesday 12 August 2008, 19:37

I agree with the others - new boots

The area where there is the crack is where the binding is used to much effort for repair.

Yes you can welded plastic but not in an area like this , where strengh is so high like on this boots.

Never see cracks like this, did you have made a big jump ........

Have you uprated binding ( hell cup home made ) generally it is the binding who broke, not the boots !
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starikashka
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Post by starikashka » Tuesday 12 August 2008, 23:49

i have seen such crack before
Image
she made it :-)

another pic - same boot
Image
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Another way

Post by Katsunori » Wednesday 13 August 2008, 12:48

if crack is not seriously...
you can choice another way to fix.
Change to INTEC HEEL ADAPTER and use intec binding.
heel is fix with screw from sole, maybe....
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Post by skywalker » Wednesday 13 August 2008, 21:31

starikashka wrote:i have seen such crack before
Very nice... crack of course :wink:

I tried to find a way to weld / bond / whatever something on an old pair of Northwave. I had some support from plastics experts like my professor in this subject. Resut of our research was, that there are many ways to fix plastic parts... but almost none to make it last under load.

Get a new one.

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starikashka
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Re: Another way

Post by starikashka » Thursday 14 August 2008, 10:01

Katsunori wrote:if crack is not seriously...
you can choice another way to fix.
Change to INTEC HEEL ADAPTER and use intec binding.
heel is fix with screw from sole, maybe....
if crack not get to the sole this is possible, but in this particular case i would worry about quality of plastic itself. This lady on the picture above just about 60 kg weght, I know many riders about 100 kg who use regular plate bindings and do not broke that part :-) For new boots intec is the option.
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Alex
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Post by Alex » Thursday 14 August 2008, 16:46

there is no way to preserve stressed element for ever :think:
it's normal change board, bindings, gloves and boots after some seasons, and for this boots its time to get a rest :angel:
Intec is not the best option for extreme carving, and usually the boots don't brake but become softer or the plastic brake where there is friction!
at the end if you decide to get another pair of deeluxe you will have one of reserve :wink:
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Post by starikashka » Thursday 14 August 2008, 17:26

Alex wrote: Intec is not the best option for extreme carving
it is not preventing to do EC turns :-)
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Post by Alex » Thursday 14 August 2008, 17:40

starikashka wrote:
Alex wrote: Intec is not the best option for extreme carving
it is not preventing to do EC turns :-)
yes of course...it's possible do ec turns with a soft board and soft boots, but to best handle all situation and the steeper slopes it's better use the tricks and the knowledge contained here :wink:
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Post by starikashka » Thursday 14 August 2008, 17:51

Alex :-) do not get to extreme examples :-) intec is just a method to fix rider to a board :-) does anybody noticed the differences in progress made by same rider usind different kind of plate bindings?

I used and did not feel that :-)
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Simon
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Post by Simon » Thursday 14 August 2008, 18:07

Thanks for the answers, even I did not hear what I liked to hear!

At least I'm not the only one :wink:

Yes, normally the binding is the weakest part in the system, but since I use the Ibex instead F2, this problem is solved.

I used the boot for about 130 days in 3 years. I did not notice the crack while riding. It must be happened while carving very deep in the knees on really icy snow. I did not make some big jumps nor I had a serious crash.

Intec is not a solution, the crack affects also the intec nuts and I prefere bail bindings because of there lateral flexiblity.

The crack is very close the sole fins inside of the boot. If plastic welding would work, there is enough space to add some reinforcements.

@ skywalker: Do you remember the plastic type of the NW boot?

@ starikashka: How did you mange to brake the boot, the boot does not look not very used? Was it the rear foot too? Did you get a replacement?

I will have a look for an other damaged boot to have some material to try plastic welding even you all do not recommend :wink:

Simon

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starikashka
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Post by starikashka » Thursday 14 August 2008, 21:59

Simon, this was not me, that lady on the picture broke the boot. She just carve and feel more flexibility. No one was injured. I do not know much details but can find out.
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