Hi
Iam working on this project for a couple of months now ....
Give it a close look and give me your opinion please .
I normaly build the Kite buggys , thats why the front of the proto kart it self look like the XXtreme/XXracer buggy . The back ( that hold the wheels ) can be turned to the front for transport . The sail is still a proto It needs a lot attention to get it up to a 100 %
Have Fun
Ruudje
Iam working on the hooting part hahaha 
I need to reduce the weight of the frame , the seat need to changed and the sail ...... it worxx but it NOT fast enough and still to much work to set it up .
Have Fun
Ruudje
Ruudje. When working on the sail keep in mind , The Flatter the faster but less power. More Belly gives power but less speed..
Ron
New sail nearly finiched ....
Updat very soon ( have to wait for wind 
)
Have Fun
Ruudje
I would have a good look at getting some rig tension on the sail to set some shape.
im rather impressed so far
The sail is finshed .
No wind yet 
this weekend got kite buggy races ( no time to try )
Ruudgje, which one is u , the bald head with shoes on , or the hairy bugger with thongs [japanese riding boots] looking dejected? we all have moments like that, It would seem that your sail needs to be tighter in the batterns with more down haul to the tip of the boom [i think] 
Hahahaha Iam the hairy one whit the thongs ... The first and the last pict.
The sail in these pictures was completly wrong .
The new sail is made better ( I hope 
)
Next week after the races I hope there is still a little wind left to test and make more pictures .
Have Fun
Ruudje
Ruudge,,,,,,your working toward perfection with the new sail.
out here we have a habbit of giving a nick name to nearly everyone
its concidered an honour most of the time. So with your name we can
make that a "BUDGEY" which is a small native bird that can live in big
flocks or as most people see them in a cage, they become good
talkers. So from now on here your Budgey
I like the BUDGEY nick name hahaha
Have Fun
Ruudje ( this is my nick name given to me maybe 30 years ago )
Hi
Yes I can put tension on the sail , because I can fix the boom in a every possion .
The iceflyer has a full surf sail in back , my idea is to build a frame and design a dedicated sail . The frame you can fold it so it fits in the trunk of a normal car.
The only thing I use that is not special made for the Vortexx is the frontfork ( I use the same as I use in my kite buggys ) and the mast , this is a 60% carbon surf mast from BIC whit a lenght of 460 cm .
After this weekend more pictures
Have Fun
Ruudje
Hi
The IMCS is 25 .
Well after a great racing weekend , back to the XXtreme / VorteXX ....
Still NO wind But Ive made some pictures just to show .
The top of this sail is made deferently and the mast has more curve .
Have Fun
Ruudje
I think a center down haul would work fine on that sail with the rope exacting the lower block to the front of the yacht to another single block that you could pull back on.
I had an iceflyer and it was an option that I was going to try.
web.archive.org/web/20070905214315/http://iceflyer.com/plans/download.html
Can you explain .... center down haul for me I dont understand
The white under the boom can be fixet to the bottom of the mast holder .
Have Fun
Ruudje
This pick shows a boom center pull, If you move the block it front of my hand to the front of your yacht (low against the seat) I think you will get a better sheeting result out of your sail. Only a suggestion.
The two boom blocks are triple and the front one could be a ratchet.
Hey Ruudje,
The short answer is "Shiite Loads" That boom is about 1.80m long and it has at least a 25mm curve in it from the down haul. Yep, I'd say "Shiite Loads".
Ron
PS do the math and a proving test.
Down Haul is the down pull on the sail via the boom and Sheet. It tightens the whole sail where as, The Leach down haul is pulling extra tension on the Luff Pocket and Luff of the Sail (Luff Front edge of sail). Using these methods tightens and flattens the sail leaving Air Pressure to curve and shape the sail.
Another reply to your questions..
We all seem to have had some input into the hows and what fors but noone has seemed to notice your sail boom configuration will only allow for Luff Down Haul. Try adding tension to the Luff by tying it down more tightly..
Finaly got wind and a lot of it hahha 25 knt .
A pitty the water came fast on the beach so there was not much time to play
The acceleration was okay I dont no the max speed ( forgot to bring my GPS )
This is the first time in the VorteXX , I needed to get used to everything .
The first thing I have to look into is the rope wich operate the sail , it does not run smooth .
The sail need to be redesigned , it need to preform better and it doesnt look good .
Have Fun
Ruudje
Hi Ruudje
Somehow you need more down haul to flatten that sail out, maybe a mast extension at the top of the mast to raise the sail so that this can be achieved. Maybe you could look at a windsurfer down haul at the front of the sail and similar out haul .
Cheers
aus230
.)
I now about the problem of the downhaul , I used a rubber diabolo . This rubber make the boom very flexible . I need to make something new for the boom . Also the white material under the boom is like rubber . All these things toggedder make the boom nearly useless .
Got still a long way to go before it is perfect
Have Fun
Ruudje
You are right Clemco.. I have been nutting on that quandary. The Support Truss, call it a "Stinger" if you will should take the place of that White piece of sail to about 3/5th of the Boom Length, to gain enough tension on the Leech of the sail to start curving the mast and applying tension to the whole sail surface. It would have to be side braced between the axles in order to control and forces that might try tearing it from its mounts. The Luff Pocket should also have a down force applied to it in order to hold it down tightly. These modifications would also eliminate the amount of Sheeting rope one would have to control as it is.. The Vortexx appears to have enough ground clearance to accept a length of 5/8th" Box Section of the length required with a shorter length of the same angled down from about 4" up the Mast Step to about half way along the length of the stinger. To be on the safe side a piece of 1/4" Rod should be welded between the 2 to act as a Truss. The sheet could then be operated thru the end of the Stinger.
My thoughts at this time. Add too if you will.
Ron
PS. Rudje, Why the White extension?? Looking at it I think it would add very little extra efficiency to the over all sail as it is in the Wind Shadow of the wheels etc as well being in the lower Wind Sheer Area (The wind decreases the closer to the ground=Wind Sheer)
Ruudje, You could think about folding the bottom of the sail Luff Pocket at 45 degrees to the bottom of the sail allowing a little extra down-haul length for tensioning the Luff of your sail..
Ron
PS. Gees! If we keep improving your LY you are going to be able call it a Light Aircraft..
