I have just finished my new 235 x 44cm, 67liters, 4,8 kg speedboard today. Some months ago I asked for a fast rockerline and mr. love was so kind to share the secrets of his love muscle with me. 
Thank you mr. love!
Looks Great mate, I hope it rocks!!!!
Wood duck, yep you could buy a production board but it,s way more fun designing and sailing your own gear.
Thank you mr. love!
getting a board to 4.8kgs is a great effort fred, how about a pic of the bottom and a few measurements, eg rocker,how much v, concaves if any
Those are NP Race..have them on my boards, adjustable only via three screw holes,
weight is 405gr set of 4, versus ie 620gr set of 4 Chinook adjustables.
They are light when wet.
These straps weigh as little as 54gr per footstrap and don't take any water.
Light, durable and look quite nice on most boards!
Enjoy,
Remi
I have a couple of sets of the Kovalski pads and they are really good. A bit exy though.
so tell me martin in your honest oppinion, do you think the saveing in weight makes a difference
I have got them on my Formula board and on my B&J board. I think for serious Formula and Slalom racing weight is important.
It is interesting that people pay big bucks to get the super lightweight construction on their boards then stick a set chunky wave straps on it that soak up 400 grams of water.
For my level of sailing I doubt it makes any difference whatsoever, but it makes me feel better. Yep , I am a tool!!!!
I have got them on my Formula board and on my B&J board. I think for serious Formula and Slalom racing weight is important.
It is interesting that people pay big bucks to get the super lightweight construction on their boards then stick a set chunky wave straps on it that soak up 400 grams of water.
For my level of sailing I doubt it makes any difference whatsoever, but it makes me feel better. Yep , I am a tool!!!!
Thanks for the compliments. Building this board I missed some nice windy days, but somehow I like building my own gear as much as sailing it.
getting a board to 4.8kgs is a great effort fred, how about a pic of the bottom and a few measurements, eg rocker,how much v, concaves if any
its great to see your useing stringers fred , i'm useing 11kg/m3 and its not easy keeping the rocker on a board around 70lt's (even with a rocker template )
when bagging with out them
Re holding the rocker when building the board, I put a carbon T stringer in my boards and I mainly do it to hold the rocker.
I cut a slot 25mm deep right along the centreline of the poly blank from 100 to 1400 from tail.
I do this slot with a jig saw with a shortened blade.
The T stringer is a strip of CF (woven)150mm wide, wet out on the table, lay along the centre line and then push it down into the slot with the edge of a metal squeegie.
Squeegie the T stringer edges flat ,put on your fabric layer and the pvc on the blank, throw it in the vac bag and the former and you have a rocker which stays put.
Don't use too much vac pressure (I use 0.3 bar) at this stage or you'll get it to de-stress and spring back when its cured and you take the vac pressure off.
My boards with this T stringer seem to hold the rocker very well over time (and there are many,.... most?, which don't)
that sounds like a great idea Te Hau
ill have to keep that in mind if i ever decide to make another board
That looks dialed as. Nice job. I think it would be an awesome feeling flying down a sand bar on a machine that you have put time and effort into. 
Nice looking Board, Great Paint job showing the carbon weave effect.
Almost starting my new set of home built boards & its great to hear what others are up to.
Nice board Fred, some questions if you don't mind? Whats the difference between using the corecell or airex (or wood for that matter) are they different densities ? Also whats the footstrap positioning you've used, in the pic looks pretty wide stance. Let us know how she feels on the water mate.
Corecell is rigid and stiff and cheap (relatively) good for bottom. 100 density usually used.
Airex is flexible and forms around corners very easily, great to use but expensive (ie twice the price) 80 density.
Thx for your kind words. Still havent used it while Im dreaming of 40+.
@sailpilot Yes, I am tall and I prefer a wide stance. I cannot add much to what Te Hau already explained about sandwich cores. divinycell H or airex C.70 (former name: Herex) are also very common alternatives to corecell over here. These are sold in flat sheets which are more or less brittle. The airex 63.80 in contrast is a very soft and formable foam with high impact resistance. On wider boards I use it only at the rails, nose and tail, because its lacking stiffness, especially in higher temperatures.
