Search found 18 matches

by Jonsn
Sun Jan 14, 2018 4:30 am
Forum: Journals: Log Your Ski Building Progress
Topic: Perennial Skis
Replies: 22
Views: 7416

New GS Skis

My last season's GS build was too soft I gave it another try this year. I designed a core thickness profile taking measurements on my sister's and her boyfriend's GS skis. I interpolated the profile to my length, adjusted for base, topsheet,.. and loaded the profile into Fusion360 by the ImportSplin...
by Jonsn
Thu Mar 23, 2017 10:41 pm
Forum: Journals: Log Your Ski Building Progress
Topic: GS Race Ski
Replies: 18
Views: 5269

Well done. Did you race in those touring boots?
by Jonsn
Thu Mar 09, 2017 11:09 pm
Forum: Journals: Log Your Ski Building Progress
Topic: GS Race Ski
Replies: 18
Views: 5269

Very nice ones! I hope to hear they perform as good as they look. Have fun testing!
by Jonsn
Sun Mar 05, 2017 5:48 am
Forum: Journals: Log Your Ski Building Progress
Topic: R equipment
Replies: 25
Views: 11651

That's true satch. I am sure there will be gaps where the resins prefers to flow. The risk of wasting a pair of skis would be too high. I remember the scary feeling when starting a resin infusion when I think back, when I was building two carbon fibre hydrofoils for a 28' catamran an several kilos o...
by Jonsn
Thu Mar 02, 2017 2:49 pm
Forum: Journals: Log Your Ski Building Progress
Topic: Perennial Skis
Replies: 22
Views: 7416

Hi pmg. My parents live in Andelsbuch. I visit them very often in the winter time.
by Jonsn
Thu Mar 02, 2017 2:39 pm
Forum: Journals: Log Your Ski Building Progress
Topic: R equipment
Replies: 25
Views: 11651

Great work.
I like the idea of using resin infusion.

Do you think it is possible to tape the a topsheet directly to the mold and use no vacuum bag at all? In that the way the vacuum consumables would be minimized to gum tape and a bit of tubing.
by Jonsn
Wed Mar 01, 2017 1:49 pm
Forum: Journals: Log Your Ski Building Progress
Topic: Perennial Skis
Replies: 22
Views: 7416

Thank you for all the replies. I did degrease, sand and degrease the aluminium just before layup. I have not chemically treated it. I will see how long the bond lasts, otherwise I will the try to acid etch next time. I think the even bigger problem was, that that the aluminium is no bent during pres...
by Jonsn
Tue Feb 28, 2017 2:50 pm
Forum: Journals: Log Your Ski Building Progress
Topic: Perennial Skis
Replies: 22
Views: 7416

I've finished a pair of GS skis and took them for a test ride yesterday. They are 180 cm long with widths of 98-70-116, R=19m Ash core, maple sidewalls, aluminium tail spacers, 750 g/m^2 triax glass and a smoked oak topsheet with laser cut ash inlays and an epoxy topcoat. https://abload.de/img/20170...
by Jonsn
Tue Feb 07, 2017 2:39 pm
Forum: Journals: Log Your Ski Building Progress
Topic: Perennial Skis
Replies: 22
Views: 7416

Thank you guys! The skis have a length of 170 cm and widths of 118-86-110. Not a real powder width but they float pretty well though and I do not like to skin on much wider skis. I am working on a full powder ski with a length of 180 cm and widths of 154-125-147 with the same balsa construction meth...
by Jonsn
Mon Feb 06, 2017 4:02 pm
Forum: Journals: Log Your Ski Building Progress
Topic: Perennial Skis
Replies: 22
Views: 7416

Thank you burnside!

Yes, it is a .6 mm oak veneer. I use a vacuum press. Once the skis are in the bag, I push the veneer in all the corners by hand. It slightly cracks during that, but the cracks fill up with epoxy and are hardly visible after pressing.
by Jonsn
Mon Feb 06, 2017 3:00 pm
Forum: Journals: Log Your Ski Building Progress
Topic: Perennial Skis
Replies: 22
Views: 7416

Perennial Skis

After reading and building for the fourth season I finally made to post some pictures on this great forum. From the second season I was quite happy with the results and today I still ski almost all of the skis below today. All are built with wooden sidewalls and with either ash or smoked oak veneer ...
by Jonsn
Sun Feb 05, 2017 1:13 am
Forum: Journals: Log Your Ski Building Progress
Topic: My new free tourer
Replies: 16
Views: 6018

Good idea with the cutter. I am looking forward to seeing the picture!
by Jonsn
Wed Feb 01, 2017 10:36 pm
Forum: Journals: Log Your Ski Building Progress
Topic: Hannes 16/17
Replies: 10
Views: 5177

Nice skis Hannes!

I really like the look of the green sidewalls in combination with the veneer topsheet!

Enjoy the alps!
by Jonsn
Tue Jan 31, 2017 8:35 am
Forum: Journals: Log Your Ski Building Progress
Topic: My new free tourer
Replies: 16
Views: 6018

Thank you for the infos. Good point to use infusion to have less resin in the flax ;) Just to get it right: You make the laminate above the core (including topsheet?) in a separate step, then glue this piece on the the core, that is already assembled with the base. Do you do the infusion on a flat s...
by Jonsn
Mon Jan 30, 2017 10:10 am
Forum: Journals: Log Your Ski Building Progress
Topic: My new free tourer
Replies: 16
Views: 6018

Nice skis. Lightweight for these dimensions!

How much resin did you need for the flax? According to the datasheets of flax reinforcements it allways needs a lot resin what prevented me using it so far.

Did you put any reinforcement under the binding area?