GNAV...

Originally posted by I luv Wight Ray Hutchings ( now a keen surfer ) in an AUS origin moth ( built before 1974 ) from a short-lived mag called Yachting & Boating Weekly (!) and also of interest - the slow handicap result

Love those boat names too... Muffdiver and Shytot. Those Lark boys (and girls) don't have a monopoly on questionable boat and club names then.

Ew! 11 Plus, that brings back memories of a leaky old training boat my club had when I was a kid. No wonder Andy P. moved on to Moths.

Edited by Matt Jackson

No chines .

 

Looks like a moth I had A long long time ago , had no chines , just a big v sharp at bow flattend a bit a stern , although wide by modern standards , no stability , and bladdy sore on knees , kneeling in a deep veeded cockpit on a run , stability didn't improve with speed .

Wings were a large oval ring attached at Gunwhale and as had no rise hit water quickly. 

got it free with a MK 1 Skol which looked more like a mini nat 12 very wide flared hull no wings , built of rice paper seemingly , look at it wrong way would put a hole in it !

 

Good fun for the price of a few packs of fags that I had given up.

 

 

Originally posted by sailor girl Jim C.....any chance of a photo??

Only pic I can find on the web.


By modern standards nothing special, it shows how much things have changed that the equivalents of the folks who sailed Pluses back in 74 are at my club sailing 29ers.

11ft 3 long, a sleeker and neater than the Mirror and Gull, nearest equivalents you might be familiar with, nice rolled side decks, very roll tacky... When you got too old for pluses you probably graduated to Enterprises at my club: I changed clubs and moved to Cherubs, coincidentally at much the same time as I luv Wight did the same move but without the club swap.

Not wanting to get the slightest bit techy, but I found something interesting about GNAVs when I put on on my new boat in the summer

Jim C wrote

>>>The Gnav produces the same point push at the gooseneck, but the pull at the heel is replaced by as push higher up the mast.

Actually the push at the gooseneck turns around and becomes a push the otherway so you have to 'connect' the boom to the mast or stump. this assumes you have the slidey bit on the boom not on the mast - Weird though.

Gnavs are great must fix my one...  

Originally posted by LocoP this assumes you have the slidey bit on the boom not on the mast - Weird though.

Good point, I was thinking 29er system, but thinking more even then there the in force on the gooseneck must be minimal or quite possibly outward, so the main bend moment is coming at the anchor up the mast.

The effect of gooseneck pulling mast aft and strut pushing mast forward a coupla feet further up must be interesting... I wonder if you can get into the S bend arena? Shades of the horrible things that could happen to light section Cherub masts in the days of pole kites when, if you put the kite pole anchorage too high the compression load from the pole would invert the mast between spreaders and gooseneck. If you were really unwise you could get about one and a half s bends in a mast - starting from top convex at kite halyard, concave at hounds, convex at spreaders, concave at pole, convex at gooseneck. Then it probably broke!