Its a scaled down st49 , I just scaled the plans down to what I thing would be controllable and fit a mini. (and kinda look right)
If you compare the pics it looks about right except for the longer front end on st49, I think that can be compensated for
Cheers
Vic
with some extra mid section bulk to give effective ballast to provide bigger safety margin of stability
Aus,
My concern (They may be yours) is for the family jewels. Will that Mast step not be a little toooo close for comfort?
Ron
That is one of the areas that could be a challenge, but I still have to build a new mini so I hope that that can be overcome. Just checked I have 6" clearance about the same as my class5 and the wing may have to go forward a couple of inches to compensate for the shorter front
Cheers vic
Here is a clip that might ease your mind a little..... have a close look at 50 seconds in you will notice when he tacks the rig does about 3 small wobbles.
I have finished the wings except for final sanding and seal with epoxy.
Installed some temporary hinges, The shape it really smooth when the foil is set about 10%. /15%
Cheers
aus230
Started the whale back for the new mini.
inside wing foil
Smooth foil shape
just remember to leave enough room in there to steer with your shoes on. I have a yacht at home that i can only steer with bare feet
Or use hand steering.... Most Ice yachts do, Blokarts do, DN class yachts do.
If you went hand steering, kayaks could be used as yacht bodies, With feet steering you need to be able to move your feet as well as your legs and knees.
I am going to set my steering up a bit different to the current mini's so there is plenty of room. It will not be possible to have hand steering as the mast rotation is controlled by a wheel and the flap has to be adjusted while sailing
These pics have been scaled down to suit the mini
Cheers
Cisco, I think Vindicator is a little out of my league. But I hope it will preform as a mini, I think there will be a lot of trial and error with this one. By the way Thanks for showing me around while I was over your way. much appreciated
Now where should the wing be placed on the body, the best info I can find is that 30 to400% of the wing should be behind the rear axle.Any one have any other info as once it is fitted is will be difficult to move.
cheers
aus230
info from winged landyachts
I have found that my wings want to be located with 30% to 40 % of their area behind the center of the runner plank . If they are located further forward the front end washes out due to side loads. If it too far back the rear end washes out. I prefer the rear end washing out before the front. It seems like the smaller the boat the more critical this becomes. Smaller boats are trickier to get balanced right because the front end gets very light because the runner plank has to moved forward more. That makes the front end even lighter. On my new ST 40 boats I'm trying to place the runner plank 30'' from the rear of the fuselage(the end of the seat back) to keep more weight on the front end.I will make the runner plank location adjustable as well to find the perfect spot for balance. On Wingnut 1 I had moved the plank to about the 34'' forward. This did work but I'm afraid a heavier person than myself may have a hard time keeping more weight on the front end. Especially getting in and out of the boat when body weight is furthest back. To compensate I'm going to rake the wing back about 23'' at its tip. This puts about 35% of the wings area behind the runner plank center line.
Locating the main wing controls. I have placed my main wing control pivot point with 28 % to 25 % of the area in front of the pivot. The location of the side hound for and aft plays a big role in this equation. I have built the side hound tang 2.5''x 2.5'' with multiple attachment holes for and aft to fine tune the pivot location. If the pivot is too far back the wing will not want to sheet out by itself . If it located too far forward it wants to sheet out too easy and there is more stress on the main wing control. There are many variables for locating the bottom pivot point to get in the 25 to 28 % range . Its just a matter of drawing a side view of the wing and adjusting the side hound and main wing pivot location to suite your needs
the mast rotation control ratio- is this decided by experience or will it be a tuning adjustment ?
from reading the mast base notes you will need to build a set up that initially allow as some movement fore and aft to get the balance right.
maybe 200mm. it will vary depending on who is sailing too
building that now, Waiting for a 10tooth sprocket to arrive. The t section allows for plenty off adjustment for and aft at the top of the wing.
Cheers
Vic
Bit more.
Rough setup of body to get some idea what it will look like at the end. rough fitting of T piece, final settings will be done when all the parts are made
Two pics show how far the wing can be adjusted forward and back on the T piece
Front of body (nose)has not been made yet, that will be done when the front springboard is in place.
Mini will fit inside the 5.6m rope rule, everything else is way outside of anything
Cheers
Vic
Well aus230,
It may well be outside of any Class Rules but if it works then you at least you can say I came, I built and I flew Great stuff and if there is any LIP outa anybody then you can always throw dawn the Gauntlet.
Ron
