While we are working our butt of to get our Nacra Inter 18 to a small 20 knots, I look at video's of Infusions and see them going to 30 knots as if its very easy. Of course it has something to do with our sailing, but I was wondering about a few things:
1) Can anybody share the max speed you have done with an Inter 18? We would like to have some comparison, and like to know where we are aiming at.
2) We have difficulties with improving our speed with the spi, compared to without spi. It seems we end up at the same top speed every time. Should't this go faster?
3) Is there really so much difference with the Infusion?
Knowing someone else's top speed does not tell you much since there are many different factors like crew weight, skill, etc.
It is possible that your top speed is not that much faster with spi, but you will sail much lower and therefore towards where you want to go (assuming you are racing on an upwind-downwind course).
Yes, the Infusion is much faster than the Inter 18.
Downwind there is better volume and the read beam isn't slamming into waves.
Upwind there are longer boards and a more modern sail plan.
