Correct. Garrett made the typical newbie mistake when riding a displacement tailed board for the first time. He did the opposite of what i suggested and made matters worse.
Roy! you're making matters worse... lol. and by the way, no asked you to comment on my video. So Roy.... I think you are wrong on the fins being a problem. my fins are smooth. Also, this noise which happens only at higher speeds happens on all of my boards and happens on everyone's boards that have camera's attached to it. so either its the wind rushing by the camera, or its an effect of all fins damaged or not, or its a pitch created by surfboard moving over water. I think you're explanation of the fins making the noise due to damage is the least likely....
Roy, why do you refer to yourself in the third person sometimes? I'm getting a little worried about you buddy.
That is correct. Fin lift and fin thrust are the same thing. Yes it is a big subject. Half pipe tunnel fins can create lift through 180 degrees in response to changes in angle of attack, they have very low induced drag, and offer almost zero resistance to rail to rail roll, and they provide planing lift at the tail. .
Only as far as riding the Ghost 13 goes... don't try to extraploate this into a wider position which I don't hold. On my boards, I am, at least at present. Yes, when it comes to the riding position on the Ghost 13. No I don't, many people have ridden the board, have listened to my advice and/or figured out how to do it on their own and have posted excellent ride reports as a result. They are very good indeed. If they weren't I'd change them. I've made boards in the past which were not ideal, these have not been promoted or made again.
Roy, one other thing about that high pitch noise once a certain speed is achieved... maybe you've never heard it probably because your boards are not able to achieve the proper speed... I've yet to see you out run a fast breaking wave, all the waves appear to be on the slower side....
I did a year at law school after completing my Bachelor's degree, and was one of the top students. It can happen to any board as it is not the board it is the fin(s). I've experienced it myself and it is easy to fix. The problem can be due to very tiny errors. Here are some links to information on the issue: http://www.surffcs.com/us/technology/fins/faq.aspx http://groups.yahoo.com/group/wood_surfboards/message/1081 http://forum.surfermag.com/forum/showflat.php?Cat=0&Number=1441256 http://www.gasfins.com/html/useful_tips.html http://www.surfingsandiego.com/forum/forum_posts.asp?TID=4230 http://www.iwindsurf.com/forums/viewtopic.php?p=201365&sid=5119af52286426b9058cc095ba325e5c http://www.futuresfins.com/school-faq.php http://www.roystuart.biz/2010/12/surfboard-fin-guide-part-3-dreaded-flat.html
Bump bump Ignored from a couple days ago. Roy, Thanks for putting this up. I'll say it again, I and a large portion of the SI crowd have a different idea of what performing on a surfboard means. Like I said earlier, you have a go-fast, go-straight board and in your mind that is the epitome of efficiency. That's fine with me. I think the surfer's idea of performance in this video have more in common with a lot of the SI users. In the video at 1:36 Beano tries a couple times to make a front side turn up the face of the wave. He tries this unsuccessfully then moves back further on the board to try again and still can't do it and finishes out the ride by jumping over the wave at 1:45. Later, when Jay is on the board he seems to be riding further back on the board as well and getting bumped around pretty violently but still holding on at 3:18 you can see he is trying to trim up to find the high line and at 3:24 attempts a backside turn down the wave and the board proves to be too unstable for him to complete the turn. The later rides show him trying to carve but unable to as the back of the board is too deep in the water. I know that these guy obviously don't know how to ride this board as you stated earlier. You ride closer to the nose than them. However, this video and their surfing also serve as examples of how the board they're riding, that shares similar design principles to your other boards, is able to catch waves and trim but fails when a carving turn is attempted. Early on in the Naval Architecture of Planing Hull by Lindsay Lord he writes of the early Japanese and Italian PT boats with 1800 HP that "took ten boat lengths to turn, with speed falling off badly during the turn." We see evidence of this with your videos. These surfers attempted turns and were punished for it, you trim but attempt no turns. We've seen this many times through the videos you've provided. Again, as I've said earlier, there is a problem with the definition of performance. In my opinion, your definition of performance is riding a wave for as long as possible with minimal movement. My definition of performance would also be riding a wave as long as possible but meanwhile, I try to see the top and bottom of the wave and with a powerful turn in there if possible.... throwing buckets if you will. That's just me and my level of progression right now. If you are at the top of the game for the boards you're making and riding how do you see them progressing? I see people riding modern surfboard doing backflips now. Where is the future performance of your designs going?
I've experienced that sound many times, and fix it by sanding the trailing edge of the fin. My boards are very fast as can be seen in the makaha video posted here where I outrun fast breaking sections...many people have commented on the speed shown in that video and of the speed of my boards in general. they've been recorded at speeds over 30mph many times and our best recorded speed is 37mph,achieved in low period swell head high beach break waves. The sound can occur at moderate speeds in the 15 to 20 mph range, it also depends upon the angle of attack. The sound reduces the efficiency of the board and should be eliminated. The inefficiency will also exist when the sound is inaudible in magnitude.
I'd like to see the video of the 37 mph wave speed you achieved.... certainly if you had it clocked, you would have filmed it?
My boards turn very well indeed, they do so efficiently and without fuss, and unlike most longboards can do so while carving in trim at speed. It is ridiculous to judge the board's capabilities from video of someone who is not a competent rider on that board and is making serious elementary mistakes.
No but I can reproduce the result in the future,and possibly beat it. If you'd like to see what 25 to 28 mph looks like on regular boards then there's a speed event which the asp ran at Snapper rocks a while ago, it was published on the net and is probably still available.
Exactly......I thought the same thing early on in this thread. What does it mean when people refer to themselves in the third person? Answer: Plausible answer... I believe that first and foremost this is most likely an affectation. Possibly an attempt to get attention. Possibly they want someone to be concerned that they aren't well. If this is the case, I would talk to them at least in passing and ask why they say that. Another one could be that they have self-acknowledgement issues. Possibly guilt/shame/embarassment. Possibly low self-esteem. They may feel like an outsider as this would be a symbolic way to represent the self in a disasociated manner. People who do this may be coping with some issues that need to be brought into light. I would look at other aspects of their behavior. If it is deliberated towards some and not others, those who they direct this impersonal self-reference towards may be people who they feel neglected by. They may be sanely trying to say, in an oblique manner, "You don't acknowledge me, and so now neither do I." Possible Passive-aggressive tendacies? I would say these are most likely only because I have personally done this in my youth for reasons stated herein.
Look Roy is obviously a little off. Judging on how he is relentless in this thread Im happy to not know him personaly or have him as a factor in my life. Im flat out sick of this thread and I've been playing every mental game with him in the book and he keeps going.. and I only started a couple days ago. this thread has been going nonstop since january 28th!!! I don't see how this thread will end... unless SI admins kill it or Roy somehow meets his maker. and no Im not saying that I would like to see anything like that, just pointing out what appears to be the futility of driving Roy off the deep end... as it appears he's already taken that road... Want to hear about Roy's abomination of the most boring surf style in the history of the sport? Pull up a chair if you've got nothing to do for the rest of your life...
I've been using them since 1994 and did not comment on the 'newness' of the feature...I was reporting what's coming up next in response to a question. I've always preferred single concave from nose to tail to any other concave setup.
The third person is used now and then, it is more formal and less personal than the first person. In China it is considered to be good manners.