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Bulge on bottom of ski not under binding

post #1 of 18
Thread Starter 

Rossignol CX80s I bought used off craigslist. I skied about 20k vertical feet yesterday, and the bulge appeared after that day.

 

https://www.dropbox.com/s/enxb6zfe2zmmgxd/2014-02-23%2014.15.35.jpg

 

It's starting on the other ski too:

 

https://www.dropbox.com/s/l7lux1vuqx4vof0/2014-02-23%2014.15.58.jpg

 

What is it, is it common, and is this easy to fix?

post #2 of 18
More pics! Do you have a picture of the other edge of the ski in the first picture, and another angle of the edge near the bubble on the other ski? When I enlarged it there seemed to be a gap between the layers right in front of the end of the steel in the second picture, and I wouldn't be surprised if the other ski was the same. It almost looks like a clumsy repair, but that may just be the angle.
post #3 of 18
Thread Starter 

A couple more pics of the first ski with the more exaggerated bulge:

 

Same side of bulge: https://www.dropbox.com/s/8orikn6rcml4b0b/2014-02-23%2020.14.54.jpg

 

Other side of bulge: https://www.dropbox.com/s/8orikn6rcml4b0b/2014-02-23%2020.14.54.jpg

post #4 of 18
Thread Starter 

Oops, I posted same side of buldge twice. Here's the other side of bulge on ski 1: https://www.dropbox.com/s/8jaju71g7kokk11/2014-02-23%2020.14.25.jpg

 

Edge of second ski with smaller bulge; same side as bulge: https://www.dropbox.com/s/m1a78olnvb6fhfk/IMG_20140223_204040.jpg

post #5 of 18
OK, the most complicated repair I've ever done was dripping ptex into a gouge, so this is just idle chatter based entirely on this thread from a few weeks ago. Check out the damage to dbrford's ski, the advice he got, and the nice-looking shop repair.

Or course, assuming you didn't have your own encounter with a few rocks, my wild guess would be that your seller did, and decided to dump the skis, maybe after a bad repair, and the repair (or maybe the coverup) failed when you skied on them. It's entirely possible he thought the repair was good but decided to buy other skis. But that's the risk of buying online. The vast majority of the time the seller is honest and open, but then you get that one guy who conceals a defect and takes advantage of your eagerness to get the product.

I could be completely up in the night, as people say in Utah, so let's see if anyone else has something to say.
post #6 of 18

This is common in skis that do not do a full wrap of the skis edge.  After enough pressure is put on the tip, the edge starts to lift.  As it lifts and breaks away from the core, the plastic above it must move too. 

post #7 of 18
Thread Starter 

I think it's a combination from both me and the original seller hitting rocks. I don't remember hitting any rocks yesterday, but I ski Tahoe area and there's not that much snow here this year. The ski bases were fine when I got them, but the top of the skis where the ski material meets the metal edge was worn down like he had the skis bumping around in a thule a lot.

 

They skied great when I got them, and for $135 when I wanted something decent that day I can't complain. They've been put to good use so far this season. I'm glad to see in that other thread that they can be repaired and for cheap. I didn't want to spend $80+ on repairs for these.

post #8 of 18

It's not the end of the world for those skis.  Easy fix.

 

Today I did a similar repair, but to squeeze the laminates together with your fingers required a bit of effort.  It was a case where just filling it with epoxy and clamping it would lower the tip profile once cured.  I don't have a steep enough mold (yet) for this twin, so some edge bending was in order.

 

 

Left ski unrepaired.  Right ski edges bent by hand, no epoxy yet.

 

And another opportunity to shamelessly self-promote my how-to vid.

 

post #9 of 18

@Chenzo, what is release paper? Where is it typically purchased? Thanks for the vid.

post #10 of 18

^^  Nice work Chenzo.  Maybe we get you in ice hockey next time.

post #11 of 18
Quote:
Originally Posted by GorgeSkier View Post

@Chenzo
, what is release paper? Where is it typically purchased? Thanks for the vid.

Release paper is just any type of paper that doesn't stick to epoxy. The backs of stickers is what I use (skate grip tape), but some household Saran Wrap and wax papers work as well in a pinch.
post #12 of 18
Quote:
Originally Posted by Jacques View Post

^^  Nice work Chenzo.  Maybe we get you in ice hockey next time.

Haha. Next time...
post #13 of 18
Quote:
Originally Posted by litterbug View Post


Or course, assuming you didn't have your own encounter with a few rocks, my wild guess would be that your seller did, and decided to dump the skis, maybe after a bad repair, and the repair (or maybe the coverup) failed when you skied on them. It's entirely possible he thought the repair was good but decided to buy other skis. But that's the risk of buying online. The vast majority of the time the seller is honest and open, but then you get that one guy who conceals a defect and takes advantage of your eagerness to get the product.

I could be completely up in the night, as people say in Utah, so let's see if anyone else has something to say.

No reason to suspect the seller was hiding anything or that there was a bad repair. Like the man said the bases were ok when he got the skis and they've been well used this season. 

post #14 of 18
Thread Starter 

Thanks, Chenzo. That repair looks easy after watching the video. I'm ordering some stuff tonight to do it myself. Even if it's the same price as the shop, I've been wanting a heat gun. Plus I'll be ready if it happens again.

post #15 of 18
Quote:
Originally Posted by oldgoat View Post

No reason to suspect the seller was hiding anything or that there was a bad repair. Like the man said the bases were ok when he got the skis and they've been well used this season. 
I just assumed our OP would have mentioned he'd been fooling around in rocks right when the damage appeared. wink.gif Wrong again!
post #16 of 18
Quote:
Originally Posted by litterbug View Post
I just assumed our OP would have mentioned he'd been fooling around in rocks right when the damage appeared. wink.gifWrong again!

no one with ski damage was ever doing anything that could have caused or contributed to the damage. It's in the rule book.

post #17 of 18
So mysterious!
post #18 of 18
Thread Starter 
Quote:
Originally Posted by litterbug View Post


I just assumed our OP would have mentioned he'd been fooling around in rocks right when the damage appeared. wink.gif Wrong again!

 

The day the major damage appeared on the right ski I don't think I hit any rocks. I was on bigger moguls a lot though and maybe the stress from that caused it to start to separate. Whatever caused it is probably likely from me. After 700k vertical feet I would think the damage would have appeared sooner if it was mostly from the seller.

 

There's an 80% chance of precipitation today. Plus, I got my wax iron, wax, and brushes this week. I'll try to ski this weekend as is and fix the skis when the other stuff comes hopefully early next week. Thanks for all the info. I love this forum!

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