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by fluidity
Sat Jul 06, 2019 1:38 am
Forum: Kitesurfing
Topic: Aluula ? New Revolutionary Material from Ocean Rodeo
Replies: 193
Views: 15345

Re: Aluula ? New Revolutionary Material from Ocean Rodeo

Changes for a material of sufficient strength but lighter: Easier launch, relaunch. Less tendency for the kite to want to move to either side of the wind window. Less tendency to dive. More reactive due to lower mass. Be good to hear a detailed review from somebody comparing the same kite design in ...
by fluidity
Mon Jul 01, 2019 12:05 pm
Forum: Gear Builders
Topic: An object in a fluid
Replies: 23
Views: 1115

Re: An object in a fluid

Ok, answering my own question: https://openfoam.org/ (the engine) https://sim-flow.com/ (the cockpit to drive it) Just ordered the first parts for a CNC table I'll build soon. Steppersonline for my stepper motors, drivers, interface board and water cooled spindlemotor. Robotdig for splined pulleys,...
by fluidity
Wed Jun 05, 2019 6:32 pm
Forum: Gear Builders
Topic: An object in a fluid
Replies: 23
Views: 1115

Re: An object in a fluid

Ok, answering my own question: https://openfoam.org/ (the engine) https://sim-flow.com/ (the cockpit to drive it) Just ordered the first parts for a CNC table I'll build soon. Steppersonline for my stepper motors, drivers, interface board and water cooled spindlemotor. Robotdig for splined pulleys, ...
by fluidity
Sun Jun 02, 2019 1:33 am
Forum: Gear Builders
Topic: The Boom! Board
Replies: 19
Views: 1741

Re: The Boom! Board

I've not found any local retailers selling a waterproof speaker MP3 player with micro SD card slot for the music.
The look on the face of a local windsurf shop assistant's face when I asked them if their new waterproof speaker had a micro SD card slot was priceless :baby:
by fluidity
Fri Nov 30, 2018 10:52 pm
Forum: Gear Builders
Topic: How to build a bar? Just the rod/pole item ~60cm. Anyone done it?
Replies: 216
Views: 36694

Re: How to build a bar? Just the rod/pole item ~60cm. Anyone done it?

Is impact resistance an issue. So far my opinion is that it is not Actually it can be. Carbon fibre alone will snap like glass and can cut hands up if over stressed. Blend it in with dynema, kevlar or innegra, especially on a sandwiched layer and it will likely still hang together. Also, the softer...
by fluidity
Fri Nov 30, 2018 10:46 pm
Forum: Gear Builders
Topic: Clamcleat, how to do?
Replies: 6
Views: 1381

Re: Clamcleat, how to do?

Old tried and tested trick: you can take a regular clamcleat and bolt it directly onto the dyneema. The bolts will go through the weave if you open them up with a fat knitting needle. You need a back plate like the ones you have on footstraps or at least decent sized washers. [Edit: I just saw that...
by fluidity
Wed Nov 14, 2018 5:57 am
Forum: Gear Builders
Topic: 24 hr epoxy cured in 1 hr
Replies: 6
Views: 1036

Re: 24 hr epoxy cured in 1 hr

I've had the same effect, especially with microsphere fillers. Of which you'd need a lot less resin than normal anyway, it bulks up the resin a lot.
by fluidity
Wed Nov 14, 2018 5:49 am
Forum: Gear Builders
Topic: Designed foil behaviour?
Replies: 11
Views: 1760

Re: Designed foil behaviour?

Thanks plummet, finally got around to watching that video and it's clear now. :D
by fluidity
Fri Nov 09, 2018 11:17 pm
Forum: Gear Builders
Topic: Designed foil behaviour?
Replies: 11
Views: 1760

Re: Designed foil behaviour?

Thanks evan, plummet and tomtom. plummet, I'm trying to understand your bottom right diagram. I think critical is that the feet combined with the foil and stabiliser control a pivot point. Without the stabiliser the board would be super sensitive and likely near impossible to gybe. With acceleration...
by fluidity
Fri Nov 09, 2018 9:50 am
Forum: Gear Builders
Topic: Designed foil behaviour?
Replies: 11
Views: 1760

Re: Designed foil behaviour?

Interesting attitudes and comments to my query about a deviation from what's still a pretty new sport, even for kiteboarding which is also so brand new that it's barely a generation old! I'm a bit disappointed though that I had to work out for myself the most basic issue (and only technically hard t...

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