Does anyone have any feed back on the C3 Slingshots? Positives and negatives. Thinking about buying 2 for this season. Want to use them with Isonic 55 and 44. Any opinions would be appreciated! Also alternatives that ARE avaliable to buy.
The slingshots are brilliant. I have found getting your mast base in the correct position is cultural so far.They produce amazing lift for how small they are depth wise. How much do you weigh??
I would suggest a 21cm for the 44cm and a 23 or maybe a 25 for the 55cm. I have had no problems using a 7.0m sail,JP speed 54cm with the Slingshot 23cm. I am now going to try the 23cm in my slalom board. Also maybe look at a Sting II around 28cm for the 55cm board Probably the best fin i have ever owned for a slalom/speed fin. Never ever lets go in chop and it's very fast.
Proven fins....but the 23cm that I had weighed in at half a kilo,fin weight may not effect performance(all in the design and shape) but attaching half a kilo to my carbon board...err no, in comparison the KA 23 assy weighed in at 300g Debochiet 24 Up right 250g, alternative Vector delta(320g) - Tectonics - Black Project fins S line and new X45.
I'm laying up a good weedy full carbon hand made thats done 41kn
works very well with CA44 with 5.4m - 6.7m
21 cm holds in chop and honks up wind be happy to lay one up for ya 
theres plenty of footage of it in action
total weight 289g ! one for you choco 
I got a 23 slingshot. Quite disappointed. Yes it is 486gms but the main issues apart from that is it did not seem as fast as other fins I had and that once it lets go it is VERY hard to get back. Dansy will vouch for that as he went thru' a new KA koncept on his first run on the 23, yet he has done 44+ knots on the 21 which he felt was just right for Sandy Point. And of course the Dutch guys have done insane speeds on the smaller sizes.
You may need something with a bit more aspect for the 55 like a Delta and get a 20 or 21 slingshot for the 44
Cheers Izaak. I weigh in at 85kgs. I think ill chase up a 23 and 21. Unfortunately I have to sail weedies so the slalom fin isn't an option. See how it goes
Take a look at the Tectonic Nomads as well. They are lighter. I get on very well with the Nomads 21 & 23, super easy, but I just could not get the best out of the Slingshots for some reason or other. Switched to Nomads and I have no complaints now:)
One thing I notice about all these fins is the the Tuttle base is molded and attached to the fin. The Black Project Fins are shaped from a solid bit of G-10 in my experience of breaking a lot of fins is the tend to break where the fin joins the base. The BPF's being made out of one piece of G-10 are stronger.
new fins for $79
www.ebay.ca/itm/Durable-Stainless-Steel-Windsurfing-Surf-Sail-Tack-Triple-Pulley-Replacement-/303021196778?oid=200663451087
Select to expand quoteTomasz80 said...
GOT MY SELF INTO SOME TROUBLE HERE WILL BE LAYING UP SOME MORE FINS SOON THERE IS A BIT OF A WAITING LIST AT THE MO ;-)
LOL
so you can leave the back door open
And with the fin being fully immersed in water you must subtract the fin's buoyancy. The apparent weight of the fin is its volume X (density of G10 - density of water) - a lot less than 500 grams, but yes a little more than a low volume fin as G10 has a density slightly more than than that of water.
Measure the weight with a spring balance with the blade immersed in a bucket of water. Despite the huge hydrodynamic forces around a fin the buoyancy component is still there.
I'm not sure the issue with weight is about buoyancy, but more inertial mass. Boards need to be light so they are super responsive to water / rider input. A heavy board will be harder to change direction than a lighter board.
A fin's buoyancy would only come into play in sub-planing conditions, and that's where it's easier for the rider to shed a few hundred grams.
As boogie says, the weight of the fin is less important as it's at the pivot point.
Does one need super light to go super fast? We're talking speed for this type fin right?
Seems for speed weight is your friend.
My 2 cents worth.
for sure weight/mass is important for anything that needs to accelerate, but it is all relative...
swing weight in the nose of the board or up higher in the rig? sure. they swing with a certain frequency so need to accelerate over and over.
but 150 to 250gram extra for the G10 fin in the whole system to accelerate once down the course is about 0.2% of the whole lot inclusive rider.
if weight is that important then i hope you guys all have cut down carbon mast extensions and the very very bare minimum footstraps that don't hold water or even better take the leeward ones off and shave the pads off while you are at it. no boots allowed either. Strip the grip of the boom where you don't hold it, etc...
and don't even think about dropping your sail in the water before the run.
Boogie
y think de c3 slingschot is a amazing fin
y juse' dem on my falcon speed en falcon 80
en daj just work wel de controle is amazing end even up wind de vin prefoms wel
ofcors it is a speed vin so flat water is best
it is a fin dat kan take a lots of pouwer en on de half cors is alradie verie fast wen jou go doun wind jou feel de akceleration
de bord stais calm at ol thaims en stais nice flat
in dis film y yous de ss25 onder de falcon speed
I work the Rake 30° in 100% carbon.I could only find a 25cm Bull Speed. The weight is 240 gr. The most used fin from my speedfins is the 22cm Rake 30°.
I never had the idea to look what weight they have. I looked that they are fast.
Topspeed is 50knots (49,99) Thomas Döblin. In Germany are only 10 good speeder
who got my fins.They have here in the north of Germany only 3-4 days with
good 40 knots.There I know that my fin can make 100km/h is the only problem
what can I do that it is a speeder out Germany. Wolfgang
That what always speaks for carbon,is, that the reaction of carbon is always faster
than the reaction of other materials. www.designlessacher.eu Wolfgang
you can devide the types in 2 types of speedfins:
C3 Slingshot, Vector Delta, Tectonics Nomad, Custom selects -> best on flatwater speedspots and for 40+ knots.
Assy speedfins (KA, Vector Raven) and Select Caspar Speed, BPF Type S, Vector EX, C3 Venom and other slalom fins used for small slalomboards. -> Allround speedfins in not so flat conditions and or speedstrip.
Lots of brands to choose from :)
G10 fins are good for the Job. G10 is available in different quality, Also the CNC cut can be different between brands, sanded down to specific custom specs etc..
(full!) Carbon is more expensive and lighter.
