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Messages - peterp

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1
I've had a 8'2 x 20 110L sort of Barracuda design for about 2 months and I cannot fathom how stable it is - primary stabililty is as good as the 5'10 x 28.5 SUP foil board I normally use in surf. Secondary stability (when you roll past 30-40degrees) is a little less forgiving, but not by much.

I use it to paddle up on flat water and on dwds it's a gamechanger, gone are the days of being stuck in mud....

The length really adds a lot of stability as explained above. Is it for beginners, maybe not outright beginners, but it's pretty impressive. I have winged it as well - you get up in nothing.

2
Foil SUP / Re: Kujira 1440 vs Axis 1099
« on: July 04, 2022, 11:14:44 PM »
I concur with Frenchfoiler. I have Sup surfed and winged the 1440 extensively and have tried the 1099 once on a wing.

1440 feels a little more intuitive to pump, as in agile, the 1099 feels stiff as and just doesn't sink, the glide is quite is quite remarkable. The 1099 is not at it's happiest turning but it comes around ok and is predictable. The 1440 actually turns quite well especially at very slow speeds so it's my go to foil in the smallest of waves.

I'd imagine the 1099 must be super fun downwind as the glide and carry is so good, I've done heaps of downwinds on the 1440 and it is a machine, it picks up energy everywhere and also has amazing glide.

Overall I'd probably go with the 1440 as it's more versatile but if you are looking for a downwind only foil the the 1099 is probably one of the best foils for us bigger riders 85kg up.

3
Tail-rocker is a conundrum - to get up on foil your actually want a displacement design which is always more efficient with some rocker and once you are up on foil you want the slippery, skippery feel of a planing hull for touchdowns. I agree with Jondrums observations except that a flat rocker board launches quicker when winging - that I find only potentially true on shorter sub 5'0ft wing boards. On longer wingboards the same trouble Jondrum describes becomes apparent - especially if you are trying to pump board up.

Kalama's board have zero rocker from what I can see along the centerline from the middle back - he solves the conumdrum with his extreme V in the tail which gives plenty rocker along the outline.

My take is that you need some rocker, especially on SUP's and the reason people think flat rockers work on wing boards is because the power on hand allows you to overcome the initial tail drag apparent when you try and pump up - once you overcome this drag (with the help of the wing) the board releases quickly and pops up on foil - it feels efficient, but it actually isn't.

4
Classifieds / Re: Takuma Kujira and GoFoil
« on: January 30, 2022, 10:25:02 PM »
Seeing Kujira Fuse is not for sale, could it be that you are going 1095 Kujira?

5
Random / Re: Omicron is here
« on: January 14, 2022, 06:45:52 AM »
The good news from South Africa (the country that invented Omicron and got slapped with travel bans) is that it's over almost as quickly as it arrived and that hospitalisations and deaths are a fraction of the previous waves. Data might not translate to all other countries as South Africa's population is much younger and it's estimated that 75% of population has had one or more strains of covid with about 30% vaccinated (I think). Almost everyone I know got omicron, no one got really sick and most where back up and about in 3-4 days, so pretty similar to the flu from yesteryear.

The main takeaway is that if you focus on number of infections Omicron is a scary motherf@cker, but if you look at impact on the really important bit, deaths and hospitalisations, then it's completely manageable without any precautions. By all means protect yourself, but this one will pass quickly and may signal the end of serious covid.

Attached is SA's excess deaths - number of infections is dropping fast now.

6
Foil SUP / Re: Foil SUP with the Kalama Performance E3 Downwinder boards?
« on: January 11, 2022, 05:47:10 AM »

It's again turning into a, small is better, clusterf@ck - wish I weighed 60kg....

If you do a 5’1 x 28 with straight tail, the push and speed on take off is amazing, so catching waves in the surf zone is really fast and easy.

So maybe downwind board like Dave’s and a shorter one like mine in the surf?

My 5'10 is pretty much straight tail - zero rocker with small cut away last 2inches. I don't like the no rocker feeling, a 5'10 board paddles slow as is, and when tail get's lifted by wave for take off, it's sticky, sticky, sticky, until all hell breaks loose and the flat rocker makes the board feel like it's on roller-bearings and you take off. The straight tail pushes the nose down so you have to counter that by sinking tail a bit adding to the stickyness. I prefer a more progressive acceleration and I feel the board needs a much steeper wave than what a narrower longer board would. The E3 solves the flat rocker issue by the triangular chimes in back

7
Foil SUP / Re: Foil SUP with the Kalama Performance E3 Downwinder boards?
« on: January 11, 2022, 12:24:27 AM »
I tried a friends 6'4 x 24 downwind board, about 118L, in small waves on a clean day. I weigh 90kg+ with wetsuit.

Paddling around and waiting for waves was definitely more challenging than my normal 5'10 x 28.5 110L - but getting onto waves was significantly better and once up in the air it felt pretty good. The dwd board was 1kg lighter than my normal board which probably helped.

It would be too unstable for normal use in less than perfect water conditions but the glide into swells made me think about how to design my next board as I really enjoyed the earlier take-offs. Width is your enemy for catching waves and that means more length if you wish to maintain stability.

It's again turning into a, small is better, clusterf@ck - wish I weighed 60kg....

8
#Following

I really liked the comment about getting the foil higher in water (I guess this has to do with decreasing drag of mast and/or getting foil wings nearer wave energy). When I do this I notice it has a huge benefit for wave riding. I notice it as more speed and glide. So I think my problem is not enough speed and glide.


The reason riding higher reduces drag is that the amount of water (density) above the foil is reduced. As the foil pushes through the water it pushes the water up and the closer the foil is to the surface, the less water it has to displace, before it is displacing air, which is obviously much lighter.

It's essentially the opposite of ground effect. If you have ever tried paddling a SUP in the shallows you will feel the SUP almost feels like it is stuck in mud. This because the water the SUP is displacing is being pushed down, and if it is shallow enough (there is a formula for this), then this water will bounce off the bottom and refract back up towards your SUP which slows you down. If you ever have SUP races with some deep and shallow parts, make sure to place yourself in the deep part and invite your competitors to place themselves in the shallow parts.......

9
It's imminent. - In all the other sports; windsurfing, kiting, SUP - the carbon dollar quickly takes over.

Unfortunately, wing-foiling will require sub-1000sqcm wings which will be way to twitchy for the average guy to use.

We had a handful of fun races where the guys were on anything from 1000-2000sqcm, and the minute the guy on the 1000 started nailing his jibes, it was game over....

10
Random / Re: Home Theatre
« on: May 31, 2021, 12:35:12 AM »
Whoah!  Hold the phone.  Upon looking, one of the firmware updates added a smart function that lets you analyze your room by moving the remote to your common seating areas.  I did that and it really improved things.  Turns out that by default, dialogue is mostly centered in the stereo window.  We sit a bit to the outsides and it seems like we had been unknowingly minimizing the frequencies out there that we were looking to enhance.  Thanks for posting.  I would not have revisited this!

Sounds like (not to be punny), you sorted out the problem. I had similar experience where I could not make out dialogue and it was driving me mad. Looking at our room I realised big glass windows and tiled floors are basic acoustics worst enemy. Just as an experiment I scattered cushions all over the floor about 1m apart - what a difference! Don't under estimate sound deadening your room.

11
Random / Re: Electric Surf Vehicles in 2020
« on: May 25, 2021, 10:24:38 PM »
Actually the companies most likely to kick ass in the EV business all have Chinese names that most people have never heard of. It’s going to look and feel like Japan in the 70s. The USA and Europe have been ignoring the EV market too long. Most of the things that go into a US or Euro made EV come from china. Certainly the battery. There is no US company other than Tesla that builds EV batteries. Few that make a motor and control systems. Even the Japanese have just been toying with the category compare to the Chinese. I think there are about 600 car companies in China making EVs. Of those, more than a hundred are vertically integrated. None to the degree of Tesla, but you’d have to be insane or flat out dumb to think China bent over backwards to accommodate Tesla for any reason other than to have a handy target.

Completely agree with this - I'm very surprised the Chinese haven't been more aggressive in pursuing foreign markets but maybe there are greater geo-political considerations at play. The biggest short term hurdle facing EV's is price - China has a knack for knocking out product cheaper than anyone else and seeing the effort they've put into the most expensive component (the battery) - they are surely lining up to steamroll the world markets? They have some tasty propositions already from BYD, Xpeng, NIO etc. But right now I'd take a Hyundai Ioniq 5 from next door - if only they were available here in South Africa. South African politicians have been bragging lately that South Africa has the highest proliferation of charging stations in relation to number of EV's of anyone in the world. We have one charging station for every 4 EV's (world average is 20). Which fades a bit when you realise we only have 250 charging stations......

12
Random / Re: Electric Surf Vehicles in 2020
« on: May 24, 2021, 09:37:04 PM »
Late to this thread, but I've put 105,000 miles on a Soul EV as my surf vehicle since 2015. So EV surf cars are already a reality.

Went and checked out the ID.4, Mustang Mach E, and Model Y last month. Any of those would be a good surf, SUP car.

As for EV's as power packs, here on Maui, we do get outages once a year or so. I've often looked at the battery pack in my EV, thinking it should get me through a couple of days of powering the house. So I got an inverter that clips onto the 12v battery. When needed, I just hook it up, turn on the EV and it'll power a few things around the house.

The F150 powering the house is a great killer app. Why pay the $10K for a powerwall when you can put that towards the extended range of the truck and get the bi-directional charger installed for free?

Our Nissan Leaf's 12V battery only gets power when driving - ie not from the 24kWh traction battery. It would run flat in about 10min if hooked up to the house. Looked at some commercially available bi-directional V2H options for the Leaf but they are prohibitively expensive - might as well just buy a freestanding extra battery - I only need about 10kWh to be off the grid 95% of the time. Our next EV has to have V2H built in or it will be off the list.

13
Random / Re: Electric Surf Vehicles in 2020
« on: May 20, 2021, 01:36:38 PM »
It's very slick. If it's actually available before the cybertruck I will probably go for it. I really like my F350, but I bought that monster for the towing capability. Since I'm retiring from racing cars this year, after one last race at PIR this summer, I won't need as much towing capacity. But even if I did, the 10,000 pound capacity of the lightning with the big battery and tow package is enough to tow Nero, my airstream race car trailer with almost a full load, Including Peyote (the car, not the drug).

At $90K maxed out it's actually a bit less than I expected to spend on a Cybertruck. I know I sound like a huge Tesla fanboy, but really I'm an EV fanboy, and this truck looks like it will check all the boxes. It also will let me do something I was prepared to spend a substantial amount of money for--powering my shop independently of the grid with solar power. Grid independence requires a monster battery. I planned to do that this year by putting a salvaged Model 3 battery in one of the containers at my shop and adding a huge solar installation. I'll still do the huge solar project but I'll hold off on the battery since having one on wheels is a lot more practical than having one in a container. The full system would cost me in the neighborhood of $60K, and I can shave that to $30K if I wind up with a truck that provides the same power capabilities.

I think the importance of this is a little undersold. Alternate power is far more practical with local battery storage adequate to fully power a house at normal power use levels (about 3.5KWH per day as I recall). If using EV batteries as a power buffer becomes commonplace the utility and cost of independent power generation change dramatically. I think it's stupid that Tesla hasn't already jumped all over this, but they want to sell powerwalls. No one would buy a 10KWH powerwall if they could have their 90KWH Tesla serve the same function when it's parked in the garage.

Spot on - the V2H is a game changer for the EV and solar PV market - charge your car via your solar array and use the excess to power your home at night. Most EV's will only use 7-10kWh per day for normal driving - that leaves plenty to run your house overnight until the sun comes back to continue powering house. The fact that Tesla has been dithering on this is beyond me - their Powerwall is expensive and not that amazing. Tesla are serious laggards on this one.......

14
Foil SUP / Re: Downwind board size and shape. Using a paddle.
« on: April 18, 2021, 10:12:30 PM »
Frenchfoiler, it looks like you are on a similar page to KD Maui with regards to longer and narrower. The box in the pictures you showed seems very far back (or it could be the angle of the photo) and the rocker is flat behind the mast? Don't you find the flatter tail rocker a problem wrt take-offs the longer the board gets and how do you compensate for that?

Would you say this design would double up as a decent Sup-wave foil and wing board?

15
Foil SUP / Re: The first foil ban?
« on: March 31, 2021, 05:32:13 AM »
Does anyone know if the Bondi Beach foil ban is still in effect and if it has spread to other locations?

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