Guest Posted May 16, 2010 Share Posted May 16, 2010 well in my quest to have the fastest yacht in big manly bay i have decided to design and build a 10fter based on the musto skiff. i cant be bothered with a trapeze so it will have 900mm wings, a 500mm fixed carbon bowsprit and a standard 18ft phase 2 rig. i will start the serious design once i have gone and looked at a full size musto sometime this week. here is the basic design (the picture alignment is crap, blame microsft for that) oh and also, i have started a whangaparaoa school 420 team so if anyone is keen to sponsor us into a boat, flick me an email Link to post Share on other sites
bene_sails 0 Posted May 16, 2010 Share Posted May 16, 2010 only 500mm? love to see it going. a team sailing team? or just general sailing? Link to post Share on other sites
Guest Posted May 16, 2010 Share Posted May 16, 2010 well any bigger gennaker and i will need a trapeze. a school sailing team, for the interschool 420 racing Link to post Share on other sites
bene_sails 0 Posted May 16, 2010 Share Posted May 16, 2010 trapeze is where its at. but it sounds cool. be keen to see it being constructed. hey if you need any coaching/training i would be keen. i have rather a bit of 420 teams racing experience, both sailing and coaching. Link to post Share on other sites
Guest Posted May 17, 2010 Share Posted May 17, 2010 Bad news, there's already an Assassin Moth based around Manly, so you are going to have to settle for second Link to post Share on other sites
Guest Posted May 17, 2010 Share Posted May 17, 2010 the prod will take care of that... Link to post Share on other sites
Guest Posted May 17, 2010 Share Posted May 17, 2010 gotta catch it 1st, maybe able to get him while he's down! He is new to moths. Link to post Share on other sites
Guest Posted June 1, 2010 Share Posted June 1, 2010 ok, i have the plans nearly finished. after starting to race on a thompson 750 ( ) i have decided that small wings and trapeze is the way to go. as for the rig i thought maybe a starling rig (modifyed to double spreader and big-ass masthead kite on 1.3m prod) would work because the hull only has a 1100mm waterline beam so it will be too tippy upwind if i use my phase 2 rig. can anyone give me the dimensions of a starling rig (incl. boom) and the stay termination heights? Link to post Share on other sites
Guest Posted June 1, 2010 Share Posted June 1, 2010 ok, i have the plans nearly finished. after starting to race on a thompson 750 ( ) i have decided that small wings and trapeze is the way to go. as for the rig i thought maybe a starling rig (modifyed to double spreader and big-ass masthead kite on 1.3m prod) would work because the hull only has a 1100mm waterline beam so it will be too tippy upwind if i use my phase 2 rig. can anyone give me the dimensions of a starling rig (incl. boom) and the stay termination heights? OMG that sounds like it's going to be a handful of fun Link to post Share on other sites
bene_sails 0 Posted June 1, 2010 Share Posted June 1, 2010 starling mast sections are fosters f4 sections. 44mm x 55mm but if you are trapezing and a mast head kite i would suggest something a little stronger. have you seen the amount of starling masts that snap/bend? i dont know the size comparison but what about a 29er rig or 420 or 3.7? Link to post Share on other sites
Guest Posted June 1, 2010 Share Posted June 1, 2010 thenks bene_sails, do you also know the lenght of the mast and boom? i think if i put 2 sets of spreaders on it (1 about 1800-2000mm above deck and the other at forstay height) it should be strong enough. and yeah, i did think about a 420 rig but with the hull only being 1000mm wide (got the beam wrong in my last post) it would be too unstable upwind. Link to post Share on other sites
bene_sails 0 Posted June 1, 2010 Share Posted June 1, 2010 for a starling it is 4480mm maximum. but you can that section in prety much any length you want. so potentially you could have a longer mast. how would sizes go with a 3.7 rig? Link to post Share on other sites
Guest Posted June 1, 2010 Share Posted June 1, 2010 i think a 3.7 rig would be too big (remember, beam excl. wings is only a metre). it needs a trapeze on its own so it will be very hard in anything over 12kts with the kite up. i am aiming to have an upwind sail area that doesnt really need a trapeze, and with a bigger rig the boat will look ugly with a the boom way over hanging the transom Link to post Share on other sites
bene_sails 0 Posted June 1, 2010 Share Posted June 1, 2010 you could always just have a shortened boom. that would gut down your sail area. but yes, 3.7 rigs are rather tall Link to post Share on other sites
Clipper 358 Posted June 1, 2010 Share Posted June 1, 2010 i know its not really the aim, but have you thuoght of just buying a 3.7 and modifying her to have a kite? Link to post Share on other sites
Guest Posted June 1, 2010 Share Posted June 1, 2010 yeah, i have but it would be cool to build my own and i want a skiff that is as small as possible but also fast. Link to post Share on other sites
Guest Posted June 1, 2010 Share Posted June 1, 2010 well i just had a big argument with dad about this, on the drawing in my first post you can see it has a large raised fordeck and the cockpit ending where the raised fordeck starts. i want to get rid of this and have the boat looking like an original musto with the whole deck being concaved but dad thinks that when i go down the mine the raised fordeck(with a big hole cut in it for the kite chute) while prevent me from going right over, but i dont think it will because of the musto hull design (quite alot of rocker so when you are trapezing off the aft end of the wings it lifts the for'ard 1/3 of the boat ot of the water and makes the aft sections flat). i made it all confusing but the basic question is- will the ugly raised fordeck increase the bouyancy in the bow enough to prevent it going right over when i bury the bow. i would appreciate any pro. opinion Link to post Share on other sites
Guest Posted June 1, 2010 Share Posted June 1, 2010 taking into account the hull is 3050mm x 1000mm x 2800mm(at its deepest) Link to post Share on other sites
Guest Posted June 1, 2010 Share Posted June 1, 2010 Outstanding work j.harkin. PM me if you want to look at a musto at RAYC. I am no expert but I believe you are right that the design has a reasonable amount of rocker washing out to flat in the aft third to get the bow clear downwind (see pic). Bear aways are easy compared to 49ers, 12s and 18s as the boat is long compared to sail area. Mining happens most in chop larger than you'd expect for the windspeed (eg, North Head wind against tide). Speed is your friend. If the bow goes and prod goes into the wave ahead it's game over say hello to the fishes. I don't think foredeck design is going to save you there. Good luck with your project. Link to post Share on other sites
Guest Posted June 1, 2010 Share Posted June 1, 2010 taking into account the hull is 3050mm x 1000mm x 2800mm(at its deepest) woops, the hul is only 280mm deep, knot 2800 Link to post Share on other sites
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