I would like to know how much that weights so yes please weight that SOB.

Wouter

Is it a compliant mast or a carbon one ?

Because the Tornado class rules state ;

Mast weight with goose neck, base fittings, diamonds and and running
rigging; spar being horizontal with supports at lower end of extrusion
and top measurement band must be 23 kg (= 51 lbs)

Weight on top measurement band support must be 10,25 kg

Now I don't see how you are going to comply with that mast tip measurement when your mast fully rigged is only 33 lbs = 14.9 kg. This will lead to a tip weight of something like 7,5 kgs = 17 lbs

So is it a custom made carbon mast ?

Or is 33 lbs the weight of the mast blank ?

Still that Tornado mast of 23 kg is lighter than the alu mast on a I-17 when the T mast is 9.5 mtr and the I-17 is 8,5 mtr.

BTW your mast is 12 % longer than mine, not that much actually ehh ?

Regards,

Wouter

I've got these awesome rudders too. The weight is only part of the story. The design of the kick up mechanism and the shape of the foils are very nifty too--the foils become convex toward the trailing edge.

wouter: the whole boat is made out of carbon... I'm not looking at the olympics or anything, just some distance races on the eastern US coast

Oh man....I think I saw that ad. Guy was selling 2 tornados, one legal, one all carbon. How much did you pick that up for (I had my eye on it)

In any reguard.... have fun with it, it's special.


Wouter.... where did you pick up those rudders?
I'm looking for anything legal to get the weight down on my 5.5sl

haven't picked it up yet. Went to go see it and demo sail it. Getting it this spring, if my plans aren't foiled by a sudden financial windfall. That means none of you buggers can buy it ... pretty please

My Ventilo HT18 mast at a lenght of 10.5 m (34.4 feets) weighs naked 9 kg (19.8 lb) and with all the wires around 14kg (30 lb). The mast has a very good stabilty, as they use the same masts for the Ventilo 20.

BTW, wouter this carbon ruddersetup looks nice!

Greetings from Switzerland, lake of constance!

Naked 9 kg. That is extremely light !

It is actually the same as a 9,15 mtr A-cat mast and they don't even have spinnakers or a second trapeze fitted to them.

But where does the 14-9 = 5 kg difference between blank mast (naked) and fully fitted come from ?

Hey andreas ; I have recovered my PC so I can make those beam calcs for you; if you want.

Wouter

Dear Wouter

I didn't measure the mast naked, only equipped with all the wires. the 9 kg are that, what Mr. Favre once told me (Maybe without mastfoot and sealed top just out of the autoclave).

The newer masts that ventilo builds, are made of bidirectional carbon rovings, not like the old ones witch use crosswoven carbon fabrics, they have a higher fibre to epoxy ratio and should be a little bit lighter than mine allready is.

Cool you got pc running again! Thank you for your offer for doing the math in calculating the required strentgh for the beam.

In the case of building my carbon beams, i will way overbuild them, to be on the safe side.
The actuall wallthickness of the current beams is 2.75mm fulllaminate. I will go for a wallthickness 3.5mm fullaminate and will be using only undirectional carbon rovings. Under the mast step i will apply undirectional carbon patches at a angle of 45° to enforce this area.

This way the new beams 'should be' around 1/3 stronger!?