Vorpal Blade 89 Posted December 12, 2010 Share Posted December 12, 2010 it looks huge!... you gotta ask the question do you really need that bit in the middle?? Sam could take that comment the wrong way! Link to post Share on other sites
Guest Posted December 12, 2010 Share Posted December 12, 2010 i am sure georgia has an opinion Link to post Share on other sites
Guest Posted December 12, 2010 Share Posted December 12, 2010 It does look bloody big and a bit of a weapon - nice work Samin, I hate to think of the time involved but you'll get an awesome bit of kit out of it all. Link to post Share on other sites
Guest Posted December 13, 2010 Share Posted December 13, 2010 Sam, Can somene explain to the uninitiated why the max rocker on the amas looks so far forward? Link to post Share on other sites
samin 0 Posted December 13, 2010 Share Posted December 13, 2010 Sam, Can somene explain to the uninitiated why the max rocker on the amas looks so far forward? Theres more than 1 reason for this. I didnt design the amas but I did choose to use the design because I think it the best shape possible within the design parameters (light, cheap, easy to build and efficient high speed hull shape) The first answer is that the photo is an optical illusion and in reality the rocker is around 33% aft from the bow. second reason is that one advantage a tri has over a cat is the ability to have different hull designs for different load cases, i.e. the center of buoyancy can change as the boat powers up so the crew in theory dont need to move aft to stop the boat nose diving as the ama immerses the center of buoyancy moves forward because the float has more volume forward than the main hull. 3rd reason is that simply to build the ama in tortured ply and get the desired amount of curvature in the aft sections the aft 2m of the float (canoe body) have to be virtually straight. This happens to coincide with an efficient high speed hull shape. main thing is to try stop it going down the mine!!!! A very common problem on non foil assisted tris some of which have been seen doing while sailing upwind!!!! thats how I understand it anyway. hopefully someone else can add to these comments? Link to post Share on other sites
MartinRF 53 Posted December 13, 2010 Author Share Posted December 13, 2010 Thanks Martin, nice to know that Spirit of Apricot is alive and well, probably one of the first of the ORMA 60's and in my opinion one of the nicest looking. hejar mate I don't know about "well". She capsized (again) last year and I have sense she is underfunded. I agree those 1988 trimarans are good looking--sleek but very wet. I prefer the Irens look over the Smith look (they were school mates and Martyn Smith did the structural/composite engineering of boats like Formule TAG). /Martin Link to post Share on other sites
Galley skulker 0 Posted October 7, 2013 Share Posted October 7, 2013 Spirit of Apricot was a nose happy shitter. I was on it when Tony Bullimore sent it down the mine with tragic consequences. It displayed its wayward tendency throughout its competitve career. It has obviously been modified extensively - I hoped they solved its bad habits. Link to post Share on other sites
MartinRF 53 Posted October 9, 2013 Author Share Posted October 9, 2013 Interesting coinsidence: Last Saturday I spotted this very boat for the first time since I shot those photos -- still close to Stockholm. /Martin Link to post Share on other sites
Recommended Posts
Archived
This topic is now archived and is closed to further replies.