Grantmac forum posts in last 60 days

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Reply in Topic: Boots in straps
Grantmac
Grantmac
2383 posts
2383 posts
17 May 2026 2:35am
Solite are the best with straps, but they are expensive and the Velcro isn't great.
Reply in Topic: Recessed deck design
Grantmac
Grantmac
2383 posts
2383 posts
13 May 2026 2:24am
Mark _australia said..
I really don't know that people are feeling what they think they are. We went from 3" thick and wide wingboards to 6" thick DW and it takes off early yes - but never heard anyone whine about thickness. They got so narrow they needed thickness.... still no whinges about the thickness. When we settled on 75cm ish mast I have not heard anyone say that an 80 completely ruins foiling for them
Olympic classes are on a 100-105 mast..... if you had to truly feel so connected to the foil, don't you think the guys spending $30K on gear and living the sport every second of their lives in the hope of being a medallist - would be wanting to be more connected too? Kite race foil have gone from boards that look like a coffee table to skinny ML boards too. Thick ones. The best kite foil racer is see is on a very thick 19" wide ML.

Do what feels right for you, and all for innovation but some of this 20mm closer to the foil thing is a little silly. IMHO. Emperor's New Clothes ......



It could be my offset stance, but there is a distinct difference in stability between a thick board and thin one that has nothing to do with distance from the foil.
I've tried to draw it out to understand and just can't. Possibly someone who rides with feet perfectly aligned on centerline wouldn't notice it.
I also notice thickness when taxiing in chop but obviously that's something I try to avoid.
Grantmac
Grantmac
2383 posts
2383 posts
5 May 2026 12:16pm
I think under a certain volume (maybe 30% of bodyweight) length and surface area probably matter more than volume.
There is a local making a 12L kitefoil board work with a wing.
Grantmac
Grantmac
2383 posts
2383 posts
1 May 2026 12:57am
lemat said..

Gestalt said..


Grantmac said..



Roo said..




Mark _australia said..
Cost. Foam makes new models easy to produce .. but slight tweaks for costly mould changes made it hard to have a range of hollow boards.

then labour cost maybe for more complex layup, trimming halves and then bonding halves properly.
I think foam sandwich is the best blend of cost vs durability vs ability to change shape if needed and that's why it's prevailed.
I've seen some great DIY hollow boards but I think the current mass production of them is a response to the trendiness of wing / DW and wanting to have something new that the other companies don't have. I hope it doesn't translate to $5000 windsurf boards soon.






Yes it was all about price. They were going to retail for USD$4000 back in 1991 (about $10000 today), the Japanese were snapping them up. They were too expensive to make. The best shaper and best windsurfer in the world were involved.

If I was too make a hollow board today it would be 3D printed and easily modified. I have plans for a basic monocoque that a number of different shapes can be fitted to. You could easily have 3 different slalom/speed boards using one monocoque.





I think some form of 3D printing/additive manufacturing is where this is going. Between foaming filaments, continuous fiber printers and the ability to put strength exactly where it's needed.
Maybe not this year, but likely within the decade.

Other food for thought:
The shape shifting molds used to make the newer laminate sails could possibly be a basis for making custom molded laminates for hollow boards.




Agree, 3d printing is the future. I've just ordered some Lisa harness lines, they are using 3d printing for many components..



Not future for all, in facts i see mechanical parts makers, that moved to 3D printing process" for everything", come back to cnc router for many builds because of strain failure. Layering additive process suffer from lake of homogeneity.


That's where the continuous fiber printing is a lot different. But the binding agents just aren't there yet I don't think. Plus it is very slow at this time.
Grantmac
Grantmac
2383 posts
2383 posts
30 Apr 2026 8:51am
Roo said..

Mark _australia said..
Cost. Foam makes new models easy to produce .. but slight tweaks for costly mould changes made it hard to have a range of hollow boards.

then labour cost maybe for more complex layup, trimming halves and then bonding halves properly.
I think foam sandwich is the best blend of cost vs durability vs ability to change shape if needed and that's why it's prevailed.
I've seen some great DIY hollow boards but I think the current mass production of them is a response to the trendiness of wing / DW and wanting to have something new that the other companies don't have. I hope it doesn't translate to $5000 windsurf boards soon.



Yes it was all about price. They were going to retail for USD$4000 back in 1991 (about $10000 today), the Japanese were snapping them up. They were too expensive to make. The best shaper and best windsurfer in the world were involved.

If I was too make a hollow board today it would be 3D printed and easily modified. I have plans for a basic monocoque that a number of different shapes can be fitted to. You could easily have 3 different slalom/speed boards using one monocoque.


I think some form of 3D printing/additive manufacturing is where this is going. Between foaming filaments, continuous fiber printers and the ability to put strength exactly where it's needed.
Maybe not this year, but likely within the decade.

Other food for thought:
The shape shifting molds used to make the newer laminate sails could possibly be a basis for making custom molded laminates for hollow boards.
Reply in Topic: 2011 RRD Wassup 8'5"
Grantmac
Grantmac
2383 posts
2383 posts
29 Apr 2026 8:26am
I wingfoil, WindSUP and windsurf.

A wing on a SUP would be awful, stick to the sail or get a paddle.
I had the 106 Hypernut and it wasn't great. Are you looking for a board that rides like a big windsurfing board or like a SUP with a sail?
Grantmac
Grantmac
2383 posts
2383 posts
25 Apr 2026 10:40am
You describe my local conditions, although I'd rather be wave windsurfing in smooth air, where I am winging is far more pleasant and exciting.
I say go for it.
Grantmac
Grantmac
2383 posts
2383 posts
25 Apr 2026 10:30am
I'm not saying it would be the lightest but I've often thought about using something like a US box track for footstraps. Very fine adjustment and you can replace the threaded component easily.
Grantmac
Grantmac
2383 posts
2383 posts
25 Apr 2026 5:32am
Henners said..

Grantmac said..
No videos or experience using a paddle, I'm trash at SUP and would probably just hack the delicate rails to bits but I'll try it someday. Videos would probably be embarrassing to review with tiny waves.
Definitely wants weight back to turn, I rarely use the back strap though.



Those promo videos look great. I used to love the hyped up promo videos but reality is I'm most likely never going to see waves that good (even small ones) or sail that great. Seeing "everyman" videos really interests me and I fell like I learn more then seeing a massive double spinny flippy thingies.


I went looking all over for even a decent review of it wavesailing when I looked to purchase. Like you I bought it, over their Breeze, because I imagine I'll paddle it someday.
Maybe I need to strap a GoPro on the boom at some point.
Grantmac
Grantmac
2383 posts
2383 posts
24 Apr 2026 6:52am
No videos or experience using a paddle, I'm trash at SUP and would probably just hack the delicate rails to bits but I'll try it someday. Videos would probably be embarrassing to review with tiny waves.
Definitely wants weight back to turn, I rarely use the back strap though.
Grantmac
Grantmac
2383 posts
2383 posts
22 Apr 2026 12:18am
I have one of the Exocet step-tail WindSUPs, definitely gets me out on the smallest of days. Does the most hilarious impression of a carve gybe as the tail tries to sink but can't.
Grantmac
Grantmac
2383 posts
2383 posts
15 Apr 2026 1:34am
I would look less at volume and more at thickness, as in you want less thickness under your feet. If anything a thinner board with the same or less volume will offer more stability.
Grantmac
Grantmac
2383 posts
2383 posts
11 Apr 2026 4:01am
I would not inject epoxy anywhere. It will just be brittle and accelerate the damage.
Grantmac
Grantmac
2383 posts
2383 posts
5 Apr 2026 8:50pm
Foil forward and shim for less lift.
Grantmac
Grantmac
2383 posts
2383 posts
5 Apr 2026 8:46pm
A well balanced freeride windfoiling setup for me is basically all front hand/foot with the back hand/foot along for the ride.
Grantmac
Grantmac
2383 posts
2383 posts
5 Apr 2026 8:44pm
Every time I went for a good size jump on windfoil it ended in a partial backloop, but very mellow.
Grantmac
Grantmac
2383 posts
2383 posts
4 Apr 2026 9:21pm
You're using a harness right?
Grantmac
Grantmac
2383 posts
2383 posts
29 Mar 2026 12:32pm
What does one design racing have to do with wavesailing?
Reply in Topic: Do it all ?
Grantmac
Grantmac
2383 posts
2383 posts
28 Mar 2026 9:48am
30kts wind or 30kts of speed?
Grantmac
Grantmac
2383 posts
2383 posts
28 Mar 2026 9:42am
I assume a more upright fin in the front?
Reply in Topic: Straps vs strapless
Grantmac
Grantmac
2383 posts
2383 posts
27 Mar 2026 3:19am
With straps the board is part of me, without I'm just sort of on top of it.
Grantmac
Grantmac
2383 posts
2383 posts
27 Mar 2026 3:16am
Yeah that's at least 15kts looking at the water state.
I'm sure it's a neat board and believe me I'd like something similar, but let's ditch the deceptive marketing.

It seems some folks love to quote the minimum wind they see in the day as what it was, others will quote the average. I'm sure there was a 9kt lull at some point, I'm equally sure this board didn't get foiling in it.
Grantmac
Grantmac
2383 posts
2383 posts
27 Mar 2026 3:09am
Mark _australia said..

Grantmac said..


Mark _australia said..
Re last two posts - and thats what created quads. They're a slightly detuned twin so make them just a little more secure for normal folks.
that's why many folks use their quad as a twin for onshore stuff, albeit that the fin spacing is not quite optimal

better yet is a trailer setup to fine tune the twin looseness, dunno why only Patrik did it - they work sooo well. I'd buy the starboard twin in a heartbeat even if it was twice that price.




I have a 5 box board I use in onshore, what sort of outline and size would you use for a trailing setup would you experiment with?



Not to say it won't work, but it should have the mains wider apart than a 5 box will allow. Still worth a go -
use your normal quad mains in the hope it is a tiny bit too loose, then stick an 8cm ish in the centre box about 3-5 fingers behind them
I can measure properly if u want


Pretty sure I have a short base 8cm that'll work for a trial with the mains as far forward as possible.
Of course it'll be a while before I can try it out.
Return To Classic site 😭
Or... let us know if a problem, so we can tweak! 😅