How un-flat is too un-flat

[Dixie Flatline]

I have a set of kids skis and the base is really cupped... I noticed when I was trying to wax them. Is this a flaw or deliberate? If it's a flaw, how serious is it and can it be corrected?

 

[Mendieta]

I have a set of kids skis and the base is really cupped... I noticed when I was trying to wax them. Is this a flaw or deliberate? If it's a flaw, how serious is it and can it be corrected?

Yeah that's a flaw, and it can be fixed by having a base stone grind. Edge high bases are extremely hard to ski, because the edges will lock into a turn. Definitely have those done at a ski shop, and you can get the edges reset as well, which is good for ski performance.

 

[snwbrdr]

It's definitely a flaw, but I don't think base grind could even fix the degree it is concaved.

 

[Schussboelie]

Is it like that all along the ski or just near the tip?
To correct that you'll loose a lot of edge...

 

[Tony Storaro]

Is it like that all along the ski or just near the tip?
To correct that you'll loose a lot of edge...

This.

I had similar, although not as pronounced issue with my CT 3.0. Made sure edge is flush with the base and ski them as they are. Zero problems.

 

[Sibhusky]

That looks pretty extreme. Are they new? I'd take them back. A base grind to fix it will take off way too much edge and base.

 

[Wilhelmson]

Thats pretty bad. If they didn’t cost too much get rid of them. I can already hear the shop tech saying “I’ll see what I can do.”

 

[Dixie Flatline]

Sounds like these will be donated at the end of the season. Anyone suggest some good, cheap, all-mountain jr skis in 140cm range, for Idaho skiing which might include some powder?

 

[Vestirse]

Sounds like these will be donated at the end of the season. Anyone suggest some good, cheap, all-mountain jr skis in 140cm range, for Idaho skiing which might include some powder?

Lots of well priced kids skis on Evo.

Black Crows Junius Birdie Skis - Kids' 2024

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Black Crows Junius Skis - Kids' 2024

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Faction Prodigy 0 Grom Skis - Kids' 2024

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Salomon QST Blank Team Skis - Kids' 2025

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[Henry]

For a wide adult ski with cupping in the shovel, if the bases are flat within an inch or so of the edges, that's OK without removing too much edge steel. For a child's ski, maybe a half inch of flat next to the edges, or a bit more than that. These absolutely need work. They need to be flattened and structured.

 

[Wilhelmson]

Sounds like these will be donated at the end of the season. Anyone suggest some good, cheap, all-mountain jr skis in 140cm range, for Idaho skiing which might include some powder?

Of our various kids skis, he Soulrider J seemed the best with good camber and a nice sidecut with a little rocker. Not sure it rally matters much. I forget whom we gave or sold them to otherwise I would ask if they are available. We do have some Mantra Jr but they are 159 cm.

 

[rossm]

A ski tune shop with automated equipment can do a complete PTEX base fill, then grind. This will only remove minimal edge.