Had my first go on a Delta XT-50 it was a 26 it was very gusty conditions not much more than 15 knots was well under done on a 7.8m however was really impresses with the Delta XT-50 it felt like it had even more grip than the original Delta XT felt very solid considering I was on a 90cm wide board and am hoping to use a Delta XT-50 28 when they arrive.

ClausF said..
The XT50 looks very nice. The main issues on the classic Delta I found to be the (missing) grip in very choppy conditions due to its narrow tip, and the neoprene-tape used to fill in the gap between the board and front of fin.. If the gap is not tightly closed the board will be more prone to spin-out and the fin can eventually pick up seaweed in the gap that will compromise performance and fun. But these are all old news for Delta users..
I decided to remove the neoprene tape and add a layer of Solarez on the fin to make the fit tight. My weight is around 86kg.

I think at your weight the Delta XT-50 16 will be closer in feel to a Delta Slalom 19 however if you like lots of grip go for the Delta XT-50 18.

It is sometimes hard to get the tip of the Delta fins flush with the hull of the board. Should be a bit easier with delta XT-50 over the original deltas as the tip is no so far forward he we have found sanding the tuttle base in the right spots enable you to get a good fit flush wit the board. with power box some tape at the back of the power box lifting the back of the fin up and pushing the tip into the deck of the board creates a flush finish that stops most weed.

The area of the 10cm MUF Delta XT 50 should be~120 cm2..
If the computer-calculation based on the photo by legless is correct, its about as big in area as the smallest MUF speed fin, - the SPEED-02 16cm made for 50+knots winds and speeds!
I guess that the 10cm XT 50 will work in less wind, it will be interesting to test it.

legless said..
Delta XT-50 26 deep tuttle box fitted first time into a Patriks board with no sanding makes life easier.

That 26 looks good.. But I'm not too surprised as it has taken millions of years to design:
www.jostimages.com/details/sharks/great-white-shark-fin/00015611/Dorsal-fin-of-the-Great-White-Shark--unmist.html


Nice board also, I'm looking at a PD Slalom 115 v4 ..

ClausF said..
That 26 looks good.. But I'm not too surprised as it has taken millions of years to design:
www.jostimages.com/details/sharks/great-white-shark-fin/00015611/Dorsal-fin-of-the-Great-White-Shark--unmist.html

The delta XT-50 26 was a bit of a shark yesterday sailing over a 100% carbon mast and splitting it in 2. The fin survived sadly the mast did not.

ClausF said..
The area of the 10cm MUF Delta XT 50 should be~120 cm2..
If the computer-calculation based on the photo by legless is correct, its about as big in area as the smallest MUF speed fin, - the SPEED-02 16cm made for 50+knots winds and speeds!
I guess that the 10cm XT 50 will work in less wind, it will be interesting to test it.

OK, that was close anyway..
The area of the 10cm MUF Delta XT 50 is 124 cm2 according the new 2018 Brochure ..

BSN101 said..

legless said..
Had a blast using the Delta Xt-50 18's in my twin fin:

Have you tried different sizes together so that on one tack it might be faster but coming back theres still plenty to get you home.

No not tried that yet but might be interesting I have snapped a fin off sailing a twin fin board and was able to get back with one fin. Looking into getting some tri fin boards and will play around with size combinations there. Might even make use of the Delta XT-50 10cm in a tri fin configuration.

legless said..
Looks like the MUF Delta XT-50 16 is a fast fin...Matt has just got a PB of 43.47 knots using one at lake George today.

gpsteamchallenge.com.au/sailor_session/show?date=2018-02-19&team=125