Fila raw sailing clips

Here is fila sailing with flaps, this are clips from friday, when i went for a session to tune the rigg in detail.

I really love this boat now that it is finalized, handling perfectly and sailing close to the hull speed at all times.

Fila in home waters, a rigg mast back in one piece

Fila's mast was repaired, now full of carbon rowings, the upper part of the mast is stiffer, which is actually good, because the 11cm long mast crane tends to bend it in the upper third alot more than lower.
Anyway the luff curve was recut, and the A-rigg is ready for the race on saturday.

out of the jig, A.k.a. 10x10mm alu U profile

4g added

Also managed to get a few good b-rigg sailing hours during the past few days

tried flaps on fila:

taken from Karo, but set at a smaller angle to wl

only 5mm above the static wl, they drag when sailing up-wind, so the boat hops over the waves and doesn't cut through them like normal, will have to sail against other boats to se if it affects up-wind speed, but it definetly helps alot when running! clips follow

F5g Evolution, the project set aside in 2013, i am looking forward to finishing it this autum:

the boat has a fixed keel, and two rudders one in front and one in the back, electronics are placed in the bow, for balanced sailing in the prevailing flat waters where f5g sailboats are usually sailed, and in order to experiment with different weight arrangements in the boat.

forvard sheet outlet and mast ram

more in another post.

Flaps on KARO footy and over-powering the a rigg

We had a few days of good wind here in Maribor, SLO.
The wind on the pond in the city park was gusting up to some 10-12knots and shifty.
the trimm, the pivot point of the jib was set 4cm forward.

a crappy clip:

It seems like the vertical down force created by the sails is quite big in relation to the available volume in the hull. The boat gets pushed down upwind.
Obviously a solution for the next evolution of the karo is more volume, but i have also tried flaps below:

The flaps are at an angle which would be considered stupid with normal boats but at footy speed, or at such low renolds numbers it seems to be the most effective, and by eye it doesnt hurt the speed at all!

The flaps help to keep the bow up when over-powered upwind and reduce submarining downwind.
I noticed that leeway was increased with flaps. That was because the flow separated of the flaps and the hull, and then reatached at the end of the first half of the hull.
The midle third of the hull is the part where the chine provides the most "grip" upwind, so i cut the last 3 cms of the flaps, so the flow would separate earlier(from the flaps), and reattach on the hull after the first third so the whole middle third is immersed.

the cut flaps

Below is the clip of sailing with flaps, if the flaps do any good will be confirmed when i get another chance to put both KAROs in the water.