Roger wrote that what I think. Thank you. The weedfins are rake 45°, I worked
for the Speeder rake 30°. Very fast, weed is not perfect,but better than the most
The 22cm made with Thomas Döblin 49,99 knots topspeed. 93 km/h. We dream from
100 km/h. He used the fin the first time. For 101 liter is 28cm,rake30° big enough.