<HTML><HEAD></HEAD><BODY><font face="Courier New" size=2>Go in a big
shop for garden and flours. <BR>Looking fo
the right size flower -pod made from platic. <BR>The rest is
a foam
and filler job for the positive plug. <BR><BR><A
href="http://www.hagebau.de/Garten-und-Freizeit/Pflanzen/Pflanzkaesten-und-kuebel/Blumentopf-Fiore-Alessia-terrakotta--22-cm/AN4008419055624-sh3391917sp4008419055624">http://www.hagebau.de/Garten-und-Freizeit/Pflanzen/Pflanzkaesten-und-kuebel/Blumentopf-Fiore-Alessia-terrakotta--22-cm/AN4008419055624-sh3391917sp4008419055624</A><BR> </font><BR>vbr
Carsten<BR><BR>"Joe Perkel" <<A
href="mailto:josephperkel@yahoo.com">josephperkel@yahoo.com</a>>
schrieb:<BR>> How can a home builder maintain that contour 360 Deg
out of "X" material?<BR>> <BR>> Joe<BR>> <BR>> Sent from my
overpriced <BR>> iPhone<BR>> <BR>> On Oct 28, 2013, at 2:57 AM,
Marc de Piolenc <<A
href="mailto:piolenc@archivale.com">piolenc@archivale.com</a>>
wrote:<BR>> <BR>> > Quick clarification: a properly contoured
Kort nozzle, MARRIED TO A MATCHING PROPELLER, will increase static and
low-speed thrust. Of course it won't increase power, since that comes
from your motor. If you just put a shroud around your existing prop, you
will be disappointed, and a shroud that doesn't do the job is overpriced
unless it's free! Key ingredients for success:<BR>> > <BR>>
> Prop matched to the shroud<BR>> > Shroud matched to the speed
and thrust requirement of the vehicle<BR>> > Motor matched to the
resulting prop<BR>> > <BR>> > Marc<BR>> > <BR>>
> On 10/28/2013 8:33 AM, Jon Wallace wrote:<BR>> >> <BR>>
>> What is the cost of having a true Kort nozzle machined by a
CNC? I think<BR>> >> a 30% improvement in thrust for $30 would
be great but I suspect<BR>> >> machining a Kort is going to
equate to many hundreds of dollars, if not<BR>> >> reaching
beyond a thousand. When I look at the Snoopy underwater videos<BR>>
>> it is difficult to imagine a kort nozzle really making any
difference in<BR>> >> the operational experience given that the
motors are operating very<BR>> >> slowly and pushing Snoopy
around at about 2 knots (estimated). The<BR>> >> props are
designed for power, but that's what we want underwater. True,<BR>>
>> a kort nozzle would increase that power but what is the return
on the<BR>> >> cost? In other words, on a road with a speed
limit of 30mph and no<BR>> >> passing zones it doesn't matter
whether you have a 1.6 liter or 5.4<BR>> >> liter engine under
the hood does it?<BR>> > -- <BR>> > Archivale catalog: <a
href="http://www.archivale.com/catalog">http://www.archivale.com/catalog</a><BR>>
> Polymath weblog: <a
href="http://www.archivale.com/weblog">http://www.archivale.com/weblog</a><BR>>
> Translations (ProZ profile): <a
href="http://www.proz.com/profile/639380">http://www.proz.com/profile/639380</a><BR>>
> Translations (BeWords profile): <a
href="http://www.bewords.com/Marc-dePiolenc">http://www.bewords.com/Marc-dePiolenc</a><BR>>
> Ducted fans: <a
href="http://massflow.archivale.com/">http://massflow.archivale.com/</a><BR>>
> _______________________________________________<BR>> >
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<BR><font face="Courier New" size=2> </font><font face="Courier
New" size=2><br><br>-- <br><BR>Carsten Standfuß<BR>Dipl.Ing.Schiffbau @
Meerestechnik<BR>Heinrich Reck Str.12A<BR>18211 Admannshagen<BR><BR>0172
8464
420<BR>WWW.Euronaut.org<BR>Carsten@euronaut.org</font></BODY></HTML>