Comments on: Dynafit 2011/12 — The New Boots http://www.wildsnow.com/4304/dynafit-2011-12-boots/ Backcountry Skiing Weblog Blog, FAQs, more, links and info about randonnee, telemark and backcountry ski mountaineering. Sat, 25 May 2013 16:20:32 +0000 hourly 1 http://wordpress.org/?v=3.3.2 By: AVIATOR http://www.wildsnow.com/4304/dynafit-2011-12-boots/#comment-48061 AVIATOR Tue, 13 Nov 2012 16:14:39 +0000 http://www.wildsnow.com/?p=4304#comment-48061 @ matt About molding composite parts, no it's not possible. You might hear stories about people kind of doing it but that's when they had an incomplete cure for some reason, the epoxy didn't go 100% hard in the first place. And they will have caused stress, cracks and fractures to the part and it will be a LOT weaker even if they THINK they did a great job. Carbon boot parts are made in autoclaves, and the epoxy is perfectly cured and post cured. They cannot be reshaped. You have to replace the composite part, or at least part of it. The beauty of composites is how you can epoxy glue them, repair them and keep adding on to them. You cant do that with polyamids, whether it's grilamid or pebax. To punch a carbon boot, you have to drill/saw a hole where you want to expand, then add new fiber and resin on the outside, repairing it but with a new and slightly different shape. That's the only way. @ matt
About molding composite parts, no it’s not possible.

You might hear stories about people kind of doing it but that’s when they had an incomplete cure for some reason, the epoxy didn’t go 100% hard in the first place.

And they will have caused stress, cracks and fractures to the part and it will be a LOT weaker even if they THINK they did a great job.

Carbon boot parts are made in autoclaves, and the epoxy is perfectly cured and post cured. They cannot be reshaped.

You have to replace the composite part, or at least part of it.
The beauty of composites is how you can epoxy glue them, repair them and keep adding on to them.
You cant do that with polyamids, whether it’s grilamid or pebax.

To punch a carbon boot, you have to drill/saw a hole where you want to expand, then add new fiber and resin on the outside, repairing it but with a new and slightly different shape. That’s the only way.

]]> By: Matt http://www.wildsnow.com/4304/dynafit-2011-12-boots/#comment-48058 Matt Tue, 13 Nov 2012 14:53:04 +0000 http://www.wildsnow.com/?p=4304#comment-48058 Thanks Lou. Two more questions for you: 1. Is rislan a type of urethane, pebax or grilamid? 2. Is there a non conventional way to mold carbon? What is it? Thanks again, Matt Thanks Lou. Two more questions for you:
1. Is rislan a type of urethane, pebax or grilamid?
2. Is there a non conventional way to mold carbon? What is it?
Thanks again,
Matt

]]> By: Lou Dawson http://www.wildsnow.com/4304/dynafit-2011-12-boots/#comment-48057 Lou Dawson Tue, 13 Nov 2012 13:19:54 +0000 http://www.wildsnow.com/?p=4304#comment-48057 Matt, yeah, you're not going to be able to heat mold that carbon with conventional boot tools. Anything in urethane, pebax or grilamid is moldable with good tooling and technique. Lou Matt, yeah, you’re not going to be able to heat mold that carbon with conventional boot tools. Anything in urethane, pebax or grilamid is moldable with good tooling and technique. Lou

]]> By: Matt http://www.wildsnow.com/4304/dynafit-2011-12-boots/#comment-48054 Matt Tue, 13 Nov 2012 06:44:59 +0000 http://www.wildsnow.com/?p=4304#comment-48054 Hi Lou, Iv'e got a question for you about boot modifications on ZZERO boots. I'd like to do a punch near the inside ankle on a pair of ZZEROs and am trying to decide which model (if any) would be able to accommodate a punch. Unfortunately the punch needs to happen in the area of the stringer. My assumption is that the carbon stringer on the ZZero 4 C-TF would not accommodate a punch. Do you know if the rislan stringer on the ZZero 4 PX-TF would tolerate a punch? What about the polyurethane plastic on the ZZERO4 U - MF? Thanks for any help. matt Hi Lou, Iv’e got a question for you about boot modifications on ZZERO boots. I’d like to do a punch near the inside ankle on a pair of ZZEROs and am trying to decide which model (if any) would be able to accommodate a punch. Unfortunately the punch needs to happen in the area of the stringer. My assumption is that the carbon stringer on the ZZero 4 C-TF would not accommodate a punch.

Do you know if the rislan stringer on the ZZero 4 PX-TF would tolerate a punch?
What about the polyurethane plastic on the ZZERO4 U – MF?

Thanks for any help.

matt

]]> By: Lou Dawson http://www.wildsnow.com/4304/dynafit-2011-12-boots/#comment-47005 Lou Dawson Fri, 28 Sep 2012 12:17:53 +0000 http://www.wildsnow.com/?p=4304#comment-47005 Paul, so you were not the guy in the knickers (grin)? Still remember that tour up there on Turnagain, that AK trip was a big part of the genesis of WildSnow.com... Thanks! And then, the Ski Train. Lou Paul, so you were not the guy in the knickers (grin)?

Still remember that tour up there on Turnagain, that AK trip was a big part of the genesis of WildSnow.com… Thanks!

And then, the Ski Train.

Lou

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