Hello All - oday, September 2, 2008, the U.S. RG-65 Class reached it's milestone - with the registration of our 21st. AMYA owned yacht. In all ---- we ...
556
Emilio Gianello
egianello
Sep 2, 2008 6:20 pm
Excellent news. Congratulations and keep working. Winter is a great time for building model yachts. I´m sure that spring will surprise you with much more...
557
youngmgy2000
Sep 3, 2008 12:19 am
Dick et al: If you have 20 different AMYA registered owners, you can become a recognized class if you also have the following: Class Rules (which you have) and...
558
Dick Lemke
f48_mini40
Sep 3, 2008 3:32 am
I understand Bill - but we have registered members who are NOT paid AMYA, but are boat owners, so it will be up to all of the members to decide which "TYPE" of...
559
Dick Lemke
f48_mini40
Sep 4, 2008 5:00 am
This will be a bit lengthy, but please read all of it, since an election will need to be made as to which "Type" of class the RG-65 will be here in the United...
560
youngmgy2000
Sep 4, 2008 2:56 pm
Dick, Off the top, I would say you got pretty much all of it. I was heavily involved in the rewrite of the ByLaws a few years ago. Now, I have been away from...
561
Jim Scheibner
shakyjim052
Sep 10, 2008 3:05 am
I just posted a pic of the five Albuquerque RG-65s on RCSailing at: http://www.rcsailing.net/forum1/showthread.php?p=47246#post47246...
562
Dick Lemke
f48_mini40
Sep 10, 2008 8:46 pm
........ that you listed for contact. I have a question, tht needs your answer as soon as possible, please. Dick...
563
Graham
scalesailing
Sep 12, 2008 4:27 am
What material is typically being used for keels please? I read that Dick L. was using bass... is this bass sheet Dick and what thickness. For strength I am...
564
Martin Rickards
rickards_es
Sep 12, 2008 6:14 am
... The stereotypal "Palo de Agua" building instructions recommend a 2 mm aluminium sheet filed fore and aft to a rough aerofoil section. I laminated...
565
Dick Lemke
f48_mini40
Sep 12, 2008 2:51 pm
Graham - I used a solid piece 1/8 x 2 inches - and added a layer of 4 oz. epoxy/glass to each side which took care of a lot (but not all) bending. If you go...
566
Eric Rosenbaum
ericr367
Sep 12, 2008 3:07 pm
How thick are your finished foils (fin and rudder)? I am trying to decide if shooting for an airfoil shape is worth the effort and the gain in the foil...
567
Dick Lemke
f48_mini40
Sep 12, 2008 3:16 pm
Hi everyone, just thought I'd post an overview of status going on with getting Class recognitions, etc. 1. We have the minimum number of twenty (20) AMYA...
568
gpicaf
Sep 12, 2008 3:20 pm
Hi all... Interesting subject!!!! This is no exact science at all... there are aluminium keels, wood keels, balsa only keels, plywood keels, balsa core with...
569
JFisher
slotracer577
Sep 12, 2008 3:33 pm
At the low Reynolds number that model yachts operate, flat plates have equally good lift/drag curves. On a star 45, which has a chord of 6" the Re only gets...
570
Eric Rosenbaum
ericr367
Sep 12, 2008 3:36 pm
Dick,  Thanks so much for leading the charge on getting the RG65 Class off to a good start. I really like these little boats, and can't wait for my new...
571
Gilbert L.H.
lg11uk
Sep 12, 2008 3:43 pm
Hi John and Eric A flat plate has lift that is probably as good as any shaped foil, provided you are sailing well below stall. But it isn't any good for...
572
JFisher
slotracer577
Sep 12, 2008 4:10 pm
I disagree. From what I have seen it depends on your Reynolds number and with a 2" chord on a boat going maybe 1.5 or 2 mph your Re is pretty low, well below...
573
Martin Rickards
rickards_es
Sep 12, 2008 6:07 pm
Maybe we should wait for some input from where there are a lot of RG-65's competing together to find out what works best in practice. Graham MCA is very active...
574
gpicaf
Sep 12, 2008 6:50 pm
Hi All! I may not be the best on explaining the reasons why but at least here in Chile, the top 10 rg keels are, in no particular order: - coreless carbon...
575
Graham
scalesailing
Sep 12, 2008 7:32 pm
Thanks for the thoughts so far, what I was hoping for was that wood could still do the job with a 1 pound bulb. Glass clothed being a good idea too, thanks...
576
Emilio Gianello
egianello
Sep 13, 2008 10:27 pm
John, I was much interested in this topic recently. So I did my own research. As an aricraft engeneer I found a free internet software named XLRF5 made by Dr....
577
Gilbert L.H.
lg11uk
Sep 14, 2008 3:39 pm
Hi Emilio Very interesting, thanks! Could you run your XLRF5, to compare a NACA 0006 foil against a flat plate 3 mm thick (each with 50 mm chord) at, say, 2.0...
578
Emilio Gianello
egianello
Sep 14, 2008 3:52 pm
Hi Lester, I knew there will be another courious modelers paying attention to these messages! At the moment I'm moving from my appartment so maybe it will...
579
J Fisher
slotracer577
Sep 14, 2008 4:28 pm
More thoughts on foil sections. I am using DesignFoil and Profili for my
calculations. DesignFoil used to have a demo version. Note that most of
these...
I've just uploaded in the files section (Estatutos de la Asociacion_EN, which is one text document instead of the two separate .pdf's on their web site),...
582
Emilio Gianello
egianello
Sep 14, 2008 11:00 pm
John: I`ve read your message and I can say you made a very clear thought of the keel/rudder problem... but the DesignFoil and the Profili are not the best soft...
583
J Fisher
slotracer577
Sep 15, 2008 1:37 am
Emilio, Would be great to see results on better software. I think the reason you
might not use flat plates on a RG-65 is to work well they are too thin. So...
584
Gilbert L.H.
lg11uk
Sep 15, 2008 9:50 am
Hi John The http://rc-sf.com/online_content/pdf/airfoils-part3.pdf reference is very interesting, thanks for pointing us to it. It does not tell us, though,...
