The images of the white board are the first SPRINTER 38 I built in January 2010.
3800 x 780 x 310ltr BOP style board.
The board is epoxy glass with wooden side rails for stiffening.
Under the deck pad is another timber pad for stopping heel dents.
The board is flat deck, flat bottom with a touch of V in the tail, has slab rails and weighs 13kg.
The paving and block work in the background is just a small part of the landscaping that stopped my right arm from working a couple of years ago... too old for that stuff.
I got the rocker and planshape right.









The images below of the lime green/ yellow board are of my latest SPRINTER 38
finished last weekend.
3800 x 780 x 290ltr chine bow step tail BOP style board.
The board is the same construction as the white board and weighs the same at 13kg.
The chine bow and rails offer similar qualities of ride as the current range of displacement boards.
My chines have hard edges. These edges tend to decrease the roll effect of the rounder dispacement type of rail and release water cleanly.
The step tail edge allows the water to realease earlier with out extra drag and allows you to have a late and deep V with tail kick for negotiating steep waves and shore breaks, nice for surfing. The step facilitates quick tail sink turns because it has tight radius to pivot off.
The board has high volume and width for us heavy weights.
Some food for thought.















The flat bottom under the nose skims over the surface even in choppy disturbed water, the sharp tip slices thru the chop. The chine reduces broaching, the slab rail slap and banging effect and increases the nose lift on the rails, good for surfing. The extra thick tail keeps everything bouyant.
The wider black pinline hides the rail tuck in this section of the board. The rail tuck is for smoother turning when you are on a wave.
Enjoy
Rod

Beautiful looking board BB. How's it go in Downwinders? Are you just doing your own or customs for other people? If you are selling to others what's the average damage financially? I love the colour scheme and I can't speak highly enough of the use of chines to increase manouverability. Keep up the excellent work.

Yes very nice, and at 290+ litres for a pointy 12'6 you're speaking my language

I have been moving slowly with these boards.
A lot of thinking, a lot of testing, not building too many boards and getting lost and confused.

I did a bit of match racing today, got flogged on the first leg, heading across the harbour South and into the wind over a 700meter course.
Matty is lighter and fitter and has a larger blade and is just 40 something, he was riding a Fanatic 12'6, I'm 57 last year.

Got flogged coming back as well, we were paddling inside the harbour with an 11 to 15knot SSE, lots of chop and a small side on swell.

We were totally warmed up by then.

We went for a paddle straight into the wind for 600meters, I just about kept up to him, looking better.
We turned around went down wind and Matty had trouble keeping up, at last.

We then went into the yacht basin to get out of the wind and chop to do some sprinting, we had light head wind and small dog leg over the 200 meter course.
We had a bit of a chat about what I was doing wrong.

I have been paddling out thru waves and chop most of the week. Catching waves to test the surfing capability and how she performed in beach breaks and shore breaks... I have been standing back on the board for the wave conditions.

I moved forward to the front of the deck grip with my toes just behind the grip and engaged the nose to increase waterline. Watch out Matty I can now keep up with you, wait til I get fitter and get a larger blade.
She went a little bit faster with half of my foot over the pad and onto the nonslip area, he had a bit of a head start this time but I was definitely gaining slightly on him till I ran out of puff.
Good fun.
We will see what happens over the next few weeks.

Rod

I paddled for about 6 hours over the weekend on the Sprinter.
I have found for my weight the fastest position is definitely with half of my feet just over the deck pad.
The course I was paddling was over 700mtr down wind and back upwind.
Takes me around 5mins to paddle down wind ( more cross wind coming over my left shoulder traveling in a southerly direction ) with chop and 2+ foot of swell in the harbour and around 7mins back up wind.
When I move back to where it is a bit more comfortable and I have better directional control I'm around a minute slower on both tacks. I'm not using a stop watch, just checking my watch.

This board is not slow, our best paddler turned up on sunday for paddle and fitness training. In typical style we could not catch him or stay with him when he was paddling the Sprinter and he was back on what I thought, was the fast sweet spot.
The board has plenty of glide and does not drop off the plane immediately.
It is a big board for him as he is only 75kg.

I think I need to practice my paddling style and get a lot fitter and get a larger blade to be reasonable with the 12'6. Still I have some ideas that I'll try over the next weeks, mods to this board.
I've got the wave boards going really well, so now its the 12'6 and 14's turn.