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 Photo Info
Posted By: Hal Brown
Date Posted: Jul 20, 2006
Description: If you look closely, you might notice that the airplanes are quite a lot farther up the beach in this shot. Yikes! We sat around jawing after lunch and forgot about the tide.

It was all we could do, working together, to turn the airplanes about 120 degrees so we could power them off the beach and through the 50 feet or so of shallows until they were floating free. Another five minutes and we would have been there for dinner--and probably for a midnight snack, too.

My camera did something screwy with the Aventura's colors. They're correct on the vertical stab and rudder, but the horizontal stab and wings are all wrong--should look just like the rudder. The reflection is about halfway between the vertical and horizontal colors.
Date Taken: Jul 20, 2006
Place Taken: Near Hopewell, VA
Owner: Don Maxwell
File Name: Tuch_Max_Beach_0026_k.jpg   - Photo HTML
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Category: 23, Max Pix
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Read what others had to say:

Dan Nickens - Jul 20,2006   Viewers  | Reply
    It is great to see you back into the groove for seaplane adventures, Don.     
  
Rick Oreair - Jul 20,2006   Viewers  | Reply
    Great to see you out and about professor! Since I am almost always in tidal waters, I use my Garmin to check out the tide prediction tables. Works great as long as you know a the name of a tide station close to your destination. It will give the nearest stations to you as well. Also look up what the tide will be next week etc etc. Glad you didn't get stuck.     
  
Don Maxwell - Jul 20,2006   Viewers  | Reply
    Rick, I knew when the tide was high and turned, but it's only about 2' that far upriver, so I wasn't too worried about it. The problem was that we had beached the airplanes in a place where the bottom is almost flat, so when the water went down a foot, it made a much bigger difference than we expected. Anyone dropping in there should beach on the other side of the dock, where the bottom slopes more steeply, and the two foot tide won't matter much.<br /><br />Online tide tables are at: <a href="http://americablog.blogspot.com/2006/07/bush-gives-female-german-chancellor.html">http://americablog.blogspot.com/2006/07/bush-gives-female-ge<br>rman-chancellor.html</a>     
  
Dave Lima - Jul 20,2006   Viewers  | Reply
    Hey Don, How much faster is your searey vs. the aventura?     
  
Don Maxwell - Jul 20,2006   Viewers  | Reply
    Dave, the short answer is that his Vne is (I think) 90 mph and mine is 115 (or as Bill Canino says, 120). He said once that his will go faster than 90, and mine might possibly have accidently gone a bit past 115.<br /><br />Beyond that it's hard to say--but it's an interesting question. Most of the time I think he was cruising at about 5300 rpm and I was at 4500, doing S-turns to stay with him My AS was around 70 mph indicated. But that doesn't mean much because he's maxing out at 5900 rpm on takeoff and I'm maxing at 5600 and 40 inches. (Yes, he knows it shouldn't go beyond 5800.) So in other words, there's more pitch in my prop than in his, and that probably accounts for most of the difference in cruise rpm. <br /><br />However, with his Vne of 90 mph, there's no way we're going to race. The real question is how much power is required in each airplane to maintain the same speed. Finding that out is probably possible, but wouldn't be easy, given that we have different engines and no reliable way to equalize the prop pitches.<br /><br />Another big difference is that he has his doors off for the summer, and that creates a lot of drag. He says it's noticeably faster with the doors on. So that extra drag probably accounts for the rest of the difference in our cruise rpm. And if it doesn't, then the different wing structures, coverings, and airfoils probably do. Aventura wings don't taper, and the ribs are battens that slip into the Dacron covering without being directly attached to the wing framework. (It's a very nifty system, but very different from a SeaRey wing.)     
  
Jeff Arnold - Jul 20,2006   Viewers  | Reply
    Don, I am thinking of a way you could equalize the prop pitches. Put Matt's prop on your engine and adjust the pitch until you get 5600 rpm. Presto.....prop pitch equalized.     
  
Don Maxwell - Jul 20,2006   Viewers  | Reply
    Great thinking, Jeff! Now all I have to do is talk Matt and me into <I>doing </I>it.<P>Now see if you can figure out why my digital camera got Matt's colors wrong when the surface was horizontal, but not when it was vertical. That happened in three pictures I took of the Aventura, but not in all of them. Maybe the Dacron or the clearcoat on it polarized the light? Or maybe the camera is really stupid? Or-- well, I don't know. Maybe it just was having a bad day--because I took some more pics of Matt's Aventura and another one today at the same beach, and the colors all look correct.<P>Figure that out, and I'll try you on how my green laser pointer light turns white-orange when it strikes certain orange and red surfaces, but not others that look the same color in sun, incandescent, and fluorescent light. It's very dramatic.<!-- >'"><br><font color=red size=6>' or &gt; missing in user HTML. Please fix the HTML.</font> -->     
  
Jon Ladd - Jul 20,2006   Viewers  | Reply
    The clearcoat has a UV inhibitor. This acts like a polarizor.     
  
Dan Nickens - Jul 21,2006   Viewers  | Reply
    Great, Jon, now you are obligated to explain the laser thing!     
  
Dave Lima - Jul 21,2006   Viewers  | Reply
    Hey Jon, what did you do, like get in your car and just start driving 2 months ago? That's a nice way to get out of the Florida heat.     
  
Don Maxwell - Jul 21,2006   Viewers  | Reply
    Aw, I knew I shoulda studied when I was an EE major! <br /><br />That's what I suspected, Jon. Now try this one:<br /><br />It's not related to digital cameras' ability to register near-IR, because it's actually more dramatic to the eye. (If you haven't tried it yet, look at a tv remote in a camera's LCD.)      Attachments:  

LaserColorTest-0004-WMV9
LaserColorTest-0004-WMV9

       Attachments:  

LaserColorTest-0004-WMV9
LaserColorTest-0004-WMV9

    
  
Eric Batterman - Jul 21,2006   Viewers  | Reply
    Don, Green lasers are a somewhat complicated beast compared to simple red ones. The green is produced by a series of frequency doubling and chemical/mirror magic that as a byproduct has other non-visible frequencies present (in addition to the desired 532 nm green). These other frequencies are causing some of your objects to fluoresce. Think objects under a 'blacklight', some glow - some don't. Had lasers been invented when you were an EE major?     
  
Rick Oreair - Jul 21,2006   Viewers  | Reply
    Don isn't that old, he's just got lots of experience!!     
  
Don Maxwell - Jul 21,2006   Viewers  | Reply
    Lasers, Eric? Hm. Let's see... lasers. Well, of course when I was studying electrical engineering, 'Cousin' James--we always use the quotation marks because he wasn't really a Maxwell, you know, just took the name as a convenience to the family--'Cousin' James was still at Glenlair, as his mother was still alive then, so he hadn't been sent off to the Academy yet, and therefore I was the one who was supposed to become the engineer. But once he went up to university at Edinburgh, it was a different story altogether and it became clear almost immediately that he was doing his homework (James doing his homework: <a href="http://www.gap-system.org/~history/Miscellaneous/JCMBhouse/JGSTMax.jpeg">http://www.gap-system.org/~history/Miscellaneous/JCMBhouse/J<br>GSTMax.jpeg</a>, whereas I was more likely to be found wandering about with my head in the clouds than studying electrical properties and formulae and suchlike. So it was decided upon by the Family that he would be our student of things electrical and I would be free to frivol. Which occupation I took to naturally. So, you see... You see... Um, what was the question again? Eric?     
  
Eric Batterman - Jul 21,2006   Viewers  | Reply
    Quick, hide the Glenfiddich. Don's writing in his kilt again (insert comment here). Does EE mean expositional english?     
  
Dave Lima - Jul 22,2006   Viewers  | Reply
    Don, I assume that this meandering of words was accompanied by a fifth of scotch???     
  
Don Maxwell - Jul 22,2006   Viewers  | Reply
    What else, lad?! Nothin' agin drinking Irish whiskey, though, y'understand. Or Kentucky burrrbon. It's all one in the gullet anyway.     


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