Search found 40 matches

by feldybikes
Sun Dec 15, 2019 3:17 pm
Forum: Ski/Snowboard Design and Layup
Topic: Kids Pow skis
Replies: 12
Views: 2725

Kids Pow skis

When my 10 y.o. says he wants some home built skis, it’s kinda hard to say no. I haven’t built any in years, but gonna make a go of it. He’s probably 80ish pounds and 4’6”. Thinking 135-140mm or so. The question is how to tune the stiffness. I’m leaning towards 9mm and 16oz triax. Unlike with me, wh...
by feldybikes
Fri Apr 05, 2013 8:28 am
Forum: Materials and Supplies
Topic: fiberglass and carbon proportions O_O!
Replies: 66
Views: 33615

Schweet. Good to know. That helps with my design. I think my initial attempt to use some leftovers as an extra thin core isn't going to happen. Thanks again.
by feldybikes
Fri Apr 05, 2013 6:51 am
Forum: Materials and Supplies
Topic: fiberglass and carbon proportions O_O!
Replies: 66
Views: 33615

Yo comprendo your layup. What I'm wondering was what the core dimensions were compared to a full FG ski that *was* stiff enough prior to the wood topsheet. If such a thing ever existed, that is. IOW, when you say turned out a little soft with my core profile do you mean you used the same core profil...
by feldybikes
Thu Apr 04, 2013 6:22 pm
Forum: Materials and Supplies
Topic: fiberglass and carbon proportions O_O!
Replies: 66
Views: 33615

MM, did you use the same core to get the slightly floppier skis? That's actually what I'm looking for since my backcountry boots aren't super beefy (Dynafits Zzero4)
by feldybikes
Thu Apr 04, 2013 2:14 pm
Forum: Materials and Supplies
Topic: fiberglass and carbon proportions O_O!
Replies: 66
Views: 33615

I'm going way lighter than you. If you look at the breakdown of triax FG, it's something around 50/50 for what's in the 0deg vs. +/-45 direction. It's a little off from this, but I can't remember which is which or what's the site that actually has it laid out to look it up again and don't have the t...
by feldybikes
Thu Apr 04, 2013 7:08 am
Forum: Materials and Supplies
Topic: fiberglass and carbon proportions O_O!
Replies: 66
Views: 33615

I've not made a CF ski yet, but I did just get some in the mail last night, so soon (hopefully soon enough to ski 'em once or twice before summer sets in). I will say with FG that using release film for vacuum bagging in place of the top sheet gives a really nice finish (and you don't have the weigh...
by feldybikes
Wed Apr 03, 2013 1:22 pm
Forum: Equipment and Tools (e.g., ski press, core profiler, etc)
Topic: Hammerhead Axl - mounting heel bail
Replies: 2
Views: 2151

Wow, way off topic for here, but I can try to answer. Yes, the part is asymmetric. I don't remember how it goes together without it in front of me, but, as I recall, it doesn't really look like it fits together properly until screwed down. Keep trying! Also, try telemarktips.com if you keep having i...
by feldybikes
Tue Feb 19, 2013 1:02 pm
Forum: Equipment and Tools (e.g., ski press, core profiler, etc)
Topic: Poor man vacuum bag?
Replies: 4
Views: 4587

I've used the yellow tape and the gray tape and actually have an easier time using this black tape, which is about 1/2 as much (well ~same price, but the rolls are twice as long)

http://www.acpsales.com/Black-Sealant-Tape.html
by feldybikes
Mon Jun 11, 2012 11:08 am
Forum: Materials and Supplies
Topic: 0 Degree Fibers: Stupid Q?
Replies: 8
Views: 2961

No experience in this area, but I was going to say go with the overlap. Except I'd overlap more like 50% like this (we'll see if this ASCII representation works): _____ _____ _____ _____ ___ _____ _____ _____ _____ _____ _____ _____ _____ I would think 12" lengths with only a 1" overlap would still ...
by feldybikes
Wed Apr 18, 2012 1:23 pm
Forum: Yard Sale (non commercial)
Topic: Snowboard press and tons of materials for sale *SOLD*
Replies: 8
Views: 4416

How big is the press? Long enough for skis? If so, got some pictures?
by feldybikes
Sat Mar 24, 2012 6:46 am
Forum: Ski/Snowboard Design and Layup
Topic: Telemark ski design
Replies: 5
Views: 3997

As a 1/2 time tele, 1/2 time alpine skier who hasn't skied *that* many different skis, but has skied the same ski mounted alpine and tele, my opinion is that a ski is a ski. If you like rocker, you should like it regardless of the binding that you have. I know some tele skiers don't like tail rocker...
by feldybikes
Sat Feb 18, 2012 7:32 pm
Forum: Ski/Snowboard Design and Layup
Topic: Do skis get stiffer with length?
Replies: 17
Views: 5341

My guess is that most companies don't actually change "anything" (I use this term..err..loosely) when they make skis longer, they just get stretched out. Sidecut dimensions don't change (e.g. a Mantra is something like 130/95/115 (or whatever) regardless of length -- I could be using a wrong example...
by feldybikes
Thu Feb 09, 2012 2:37 pm
Forum: Materials and Supplies
Topic: Fabric layouts
Replies: 31
Views: 10676

double post!
by feldybikes
Thu Feb 09, 2012 2:36 pm
Forum: Materials and Supplies
Topic: Fabric layouts
Replies: 31
Views: 10676

What the guy from Vectorply said mostly makes sense, but to say torsional loads are exactly 45 degrees is BS. (I know I'm putting words into his mouth...er...keyboard, but I'm just trying to get my point across) In reality, they're going to go all over the place, but "mostly diagonally" or something...
by feldybikes
Thu Feb 09, 2012 2:27 pm
Forum: Materials and Supplies
Topic: Cellophane topsheet?
Replies: 11
Views: 3884

+1 for no top sheet:

Image