Black Project fins offer an interesting 50? fin option.
Has anyone tried these forward set fins?http://www.blackprojectfins.com/windsurf-fins/windsurf-fins/weedspeed-50-degrees-slalom-gps-speed-windsurfing-fin-for-weed-shallow-water/
Still confused. Is that 50 from vertical or 50 from horizontal? Maybe weed fins should be referenced from 45 i.e. a +10 weedy is 15 degrees weedier then a -5 weedy.
Hi Ian, 50 degrees from the vertical.
Hi Berowne,
I have tried one of these fins 25cm (depth) - in my iS80 with a 7m sail - quite nice, although I'm not convinced about the foil shape though - it was quite twitchy when bearing away. More experimenting required. Probably a bit better than a Delta, although I haven't used a Delta for a few years.
Talk to Stu - he probably has a better idea about these fins than I do.
Yep. I have a 20cm deep (they call it = to 25cm) but had little change to use it since I got it. I used it at Budgie in April in my IS110 and with 7m sail but of course I was way under-finned for that combo. I could actually sail ok though and the fin felt significantly better than the Delta's I have borrowed.
Looking forward to trying it at the more weedy places in WA in a couple of months, especially Albany and Fangys, but hopefully in more wind on smaller boards and sails.
I have the MXR 50 deg. weed speed in 26 size, which looks similar, awesome fin, plenty of grip and lift. I think Craig used it on his jp90 to do 40 knots at George lake, my sessions with that fin here:
martignoni.id.au/sessions.php?fin=MXR%20Ufo%20WS-50deg%2026
But you still need the deltas when the weed is heavy and floating or the lakes really shallow, it's not a replacement.
your a lucky man George I believe MXR have stopped the production of the forward boxed 50deg as they are hard to manufacture 
I have seen the BP 22cm and looks like a great fin and quality build but extremely heavy , the c3 sweed didn't get on the market for the same reason
Select to expand quotehardie said..Haggar said..
What angle are the Deltas ?
55
I'm sure the first deltas were 60deg as I lifted the rake to 55 , have they lifted the rake to 55
The Delta are about 56 degrees. It is surprising what visual differece a few degrees makes at this rake. I made some 55 but they looked way more upright than the MUF Deltas so I thought the MUF must be 60 but it wasn't and mine were just under 54.
Hi Berowne,
I have one of these black project fins. I have the 24cm equivalent to 31. I bought it for primbee. I use it on my Patrick 92 (59cm wide) with a 7.0m and 6.2m sail. It doesn't sail at all like my 19cm delta which I use at budgywoi. I'm quite happy with the fin and will be purchasing a 28cm one to use on my Patrick 115 soon. You are welcome to try it next time I see you at Primbee. I tried to purchase an MXR a while back as they seemed to be getting the better speeds but couldn't get my hands on one as they have stopped making them I think. I hit a couple of weed chunks on Monday at Primbee but it didn't throw me and fin is pretty resistant to spin out. It was interesting that my Nautical mile was better at Primbee than at Budgewoi even though the gear was the same but the wind was about 8 knots less at Primbee. This I believe that even sailing across the wind I was spinning out on the Delta. So far Delta wins for 2sec and deep downwind but BP wins for NM and one hour. BP feels normal in the gybes as well.
Select to expand quoteyoyo said..
The Delta are about 56 degrees. It is surprising what visual differece a few degrees makes at this rake. I made some 55 but they looked way more upright than the MUF Deltas so I thought the MUF must be 60 but it wasn't and mine were just under 54.
I'm sure the first deltas were speed & slalom the ones I modified was the speed 60deg and I'm sure they only make the one fin now
heres one strait from the mold and 1/2 the weight 
Select to expand quoteyoyo said..
Hubba hubba , certainly looks better than mine (22 deep at 55 degrees)
looks good to me yoyo it doesn't matter what they look like as long as the work
got hold of a BP proto a couple of years ago and lifted the foil ,re boxed and took a mold , the best thing with a mold is it can be modified to what ever you like
BP 28 and MXR 28
Simple first impression, both good quality fins. BP has plenty of lift and performed best when fully loaded up. MXR was a touch quicker and performed best off the breeze.
Select to expand quoteyoyo said..
Clearly the boxes should be further forward in the boards for weedies
There's a need for a new box. The long deep tuttle, more latitude for fin placement. Backwards compatible with the standard tuttle. Just need a spacer for up front.
Select to expand quoteIan K said..yoyo said..
Clearly the boxes should be further forward in the boards for weedies
There's a need for a new box. The long deep tuttle, more latitude for fin placement. Backwards compatible with the standard tuttle. Just need a spacer for up front.
That is exactly what we designed for our (still to be built) slalom tandem! 
. But that was for a slightly different reason.
And yes. All that is needed is a long Tuttle box with multiple bolt holes and carefully made spacers to just the position of the fin forward and backwards.
I know the weedy lake locals like their Deltas, but I actually found that in all the places I visited, except maybe Budgie, 40 degree (Vector) leading edge worked fine when the wind and speed was up. At Fangys, I had to be a bit more careful about trying to start in the very shallow weedy spots, but once I was going I could clear the fin and be fine. No worries with Gybes, even in the thickest weed.
I recon 45 to 50 Degrees is fine pretty much anywhere, including Budgie. Can't see much use for the Deltas unless it's with big sails in very shallow water where you need the extra surface area. The Deltas do seem to be much better if you touch the bottom though! 
Select to expand quoteWindsurfunstu said..
BP 28 and MXR 28
Simple first impression, both good quality fins. BP has plenty of lift and performed best when fully loaded up. MXR was a touch quicker and performed best off the breeze.
The BP looks to have a bit wider chord in the base and more area so it could probably be used slightly shorter than the MXR and be as fast off the wind.
Select to expand quotekeef said..
re boxed sweed, delta , mxr 22
my apologies for being a goose 
but I measured the delta and its 50deg so the original must be 55
Select to expand quoteyoyo said..
Clearly the boxes should be further forward in the boards for weedies
Have you ever seen a slalom fin sitting at the the back of the slot ? ... If nothing else, the box could easily be a few cm's further forward, then most slalom and weed fins would fit your board _without overhang_.
That's where mine are, a 1cm or so further forward, and I think that's why I have trouble with deltas, they're just too far forward.
For speed is a forward fin not fast. Only rake 30°.is at the moment the fastes fin. Thorsten Luig made on Monday in La Franqui topspeed from
48,91 knots with the old 22cm Rake 30 with cut out at the base and double concave ( diagonal) Fangy worked such a cut out at the base. The B+F
asymm. is faster. And now asymm. and doubleconcave. Wolfgang
Select to expand quotesailquik said..
I know the weedy lake locals like their Deltas, but I actually found that in all the places I visited, except maybe Budgie, 40 degree (Vector) leading edge worked fine when the wind and speed was up. At Fangys, I had to be a bit more careful about trying to start in the very shallow weedy spots, but once I was going I could clear the fin and be fine. No worries with Gybes, even in the thickest weed.
Agree, sailing Fangy's on a good day with my Vector 23 is no problem
Select to expand quotemathew said..yoyo said..
Clearly the boxes should be further forward in the boards for weedies
Have you ever seen a slalom fin sitting at the the back of the slot ? ... If nothing else, the box could easily be a few cm's further forward, then most slalom and weed fins would fit your board _without overhang_.
The board designers must be taking a shot plus or minus a cm or two on where the fin box should go. Slalom boards don't come with a fin so it's not as if they fine tune it to suit the one they have in mind. And then fin manufacturers are also taking a stab on where to put it on the base, given the rake, wide point, flex and all that.
You hear talk about all the difference moving a mast base back or forward a cm makes. Is that only because it is adjustable? Maybe it doesn't matter all that much. The trim box died a natural death.
Or maybe the only critical thing is the distance between the fin and the mast base, so with one adjustable you've got it all covered. Which means the board behind the fin doesn't matter. Whether it's 6cm or 9cm of board behind the fin makes no difference, it'll be undetectable on the water. Then why all this hype about cutouts?
There's a lot us consumers don't know about the gear we buy!
