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Search: Posts Made By: CloudyIFR
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Forum: Aerodynamics
11-03-2014, 05:48 AM
Replies: 14
Views: 1,895
Posted By CloudyIFR

Sailplane Calc for MS Excel will do what you're...

Sailplane Calc for MS Excel will do what you're looking for, quite easily too. As well as others that have been mentioned. The slightly forward of the 25% is a good call.
www.TailwindGliders.com...
Forum: Aerodynamics
12-29-2012, 05:39 AM
Replies: 15
Views: 1,840
Posted By CloudyIFR

RE: How to determine CG ??

http://www.google.com/url?sa=t&rct=j&q=&esrc=s&source=web&cd=5&ved=0CGcQFjAE&url=http%3A%2F%2Fwww.rccd.org%2FDocuments%2FTips%2FCG_MAC_CALC.3.xls&ei=Y_LeUP7aN6n8iQLqloG4Dg&usg=AFQjCNF-IYLH6sEj83pfw1jr...
08-11-2012, 04:30 AM
Replies: 2
Views: 1,141
Posted By CloudyIFR

RE: Tailwind Gliders New Tips Page

OzMo,

Thanks for the kind words and how I forgot the link is beyond me! Thanks for catching that.

Here's the link:
http://tailwindgliders.com/Tips.html

Curtis
Montana
07-27-2012, 05:57 AM
Replies: 2
Views: 1,141
Posted By CloudyIFR

Tailwind Gliders New Tips Page

I added a page to my website called "Soaring and Building Tips".

These are some of my favorite videos, forum postings and general information from the folks who make and are continuing to make...
01-28-2012, 06:16 AM
Replies: 4
Views: 1,133
Posted By CloudyIFR

RE: Carbon wing tube - Where to buy?

Rock West Composites
http://www.rockwestcomposites.com/browse/unidirectional-carbon-tubing
Forum: Beginners
10-26-2011, 08:59 AM
Replies: 51
Views: 8,191
Posted By CloudyIFR

RE: Hot wire foam cutter

I'd say the best way to post a video is upload it to youtube or similar website and post the link here.

Curtis
Forum: Beginners
10-26-2011, 08:47 AM
Replies: 51
Views: 8,191
Posted By CloudyIFR

RE: Hot wire foam cutter

Fantastic! I'm glad it's working well for you.

Any chance for a photo or two?

Curtis
Forum: Beginners
10-20-2011, 05:23 AM
Replies: 51
Views: 8,191
Posted By CloudyIFR

RE: Hot wire foam cutter

Gene,

Thanks so much for the kind words. I really appreciate it. I'm addicted to models and gliders specifically.
Anything I can do to help folks build from scratch is what I like to...
Forum: Beginners
10-19-2011, 06:16 AM
Replies: 51
Views: 8,191
Posted By CloudyIFR

RE: Hot wire foam cutter

I'm glad you found the article helpful.

The foam core is cut to the planform then the airfoil shape. Make sure you cut the bottom of the airfoil first then the top or your airfoil will be...
Forum: Beginners
10-17-2011, 04:42 AM
Replies: 51
Views: 8,191
Posted By CloudyIFR

RE: Hot wire foam cutter

Templates,

I've tried foil that is used for making stained glass but what a mess. At times the wire would actually pull up the foil and cause it to hang up during the cut ruining the core. ...
Forum: Beginners
10-16-2011, 02:42 PM
Replies: 51
Views: 8,191
Posted By CloudyIFR

RE: Hot wire foam cutter

Great thread!

On the "Articles/Files" page at www.TailwindGliders.com there is an article on how to build an automated foam wing cutter and also an Excel or OpenOffice spreadsheet that will help...
Forum: Beginners
06-09-2011, 05:56 AM
Replies: 5
Views: 853
Posted By CloudyIFR

RE: Broken antenna base

If this is a 72Mhz radio then another great option is a smiley antenna. I've used these antenna's for years and have never, ever had an issue. The best price I've found is at Dymond Modelsport. ...
Forum: Aerodynamics
05-16-2011, 04:29 AM
Replies: 11
Views: 1,503
Posted By CloudyIFR

RE: Flight Trimming the CG

http://www.polecataero.com/handlaunchu/cg-location

Curtis
05-04-2011, 04:01 AM
Replies: 24
Views: 4,333
Posted By CloudyIFR

RE: 60

Just slightly forward, perhaps start with about 3/8" of an inch forward.

Curtis
Montana
04-24-2011, 04:16 AM
Replies: 8
Views: 2,656
Posted By CloudyIFR

RE: How does one come up with the best dihedral angle on a R/E glider?

There is a formula. It's called Equivalent Dihedral Angle. The idea is you can have a flat center panel with bent up tips or you could have multiple dihedral angles across the span or just one...
Forum: Aerodynamics
04-11-2011, 04:44 AM
Replies: 19
Views: 3,529
Posted By CloudyIFR

RE: Stall Speed

http://www.rcgroups.com/forums/showthread.php?t=159657#post1391393

Curtis
Forum: Aerodynamics
04-04-2011, 04:14 AM
Replies: 18
Views: 1,572
Posted By CloudyIFR

RE: Are My Calculations Right???

PtMG,

At www.TailwindGliders.com there is a FREE MS Excel spreadsheet as well as an article/tutorial called "Sailplane Calc" that will answer these questions as well as calculate these complex...
11-21-2010, 09:57 AM
Replies: 6
Views: 1,903
Posted By CloudyIFR

RE: Fuselage building idea

Absolutely.

I recommend digging out the foam as much as possible then using Acetone to melt it away, it doesn't take much Acetone so go slowly but it works great.

This sleeving might...
11-18-2010, 08:37 AM
Replies: 1
Views: 891
Posted By CloudyIFR

RE: Balsa under Glass/Epoxy

I like JGreer epoxy:
http://www.jgreer.com/
300/21 works fine. I heat cure all my parts with an electric heat blanket. I wrap the part in the blanket about 3 hours after mixing up the epoxy and...
11-07-2010, 08:08 AM
Replies: 8
Views: 1,662
Posted By CloudyIFR

RE: 48

Looks like the balance is very close, but if you want to check it, compare it or find it for a new model please visit www.TailwindGliders.com and read and download "Sailplane Calc". It will always...
11-06-2010, 08:03 AM
Replies: 8
Views: 1,662
Posted By CloudyIFR

RE: 48

Beautiful, just beautiful.

Very nice to see this kind of building still going on.

Curtis
Montana
10-16-2010, 07:57 AM
Replies: 14
Views: 2,158
Posted By CloudyIFR

RE: Question on Fiberglassing

When I make parts using composite materials and epoxy, I allow the epoxy to cure for three hours then I place it in a hot box of sorts. I take the easy route and wrap an electric heat blanket around...
Forum: Aerodynamics
10-04-2010, 06:24 PM
Replies: 23
Views: 2,567
Posted By CloudyIFR

RE: Balance Point Determination

Please read the article at RCSD linked from my website called "Sailplane Calc Article/Tutorial" and it will enlighten some things about aircraft balance. Also, sailplane calc works on most planes...
Forum: Aerodynamics
10-04-2010, 08:42 AM
Replies: 23
Views: 2,567
Posted By CloudyIFR

RE: Balance Point Determination

You should check out my article for "Tinamou" at my website.
http://tailwindgliders.com/Files.html#Articles


There is another article as well called "Table Top" that show more about Tinamou....
Forum: Aerodynamics
10-04-2010, 08:36 AM
Replies: 23
Views: 2,567
Posted By CloudyIFR

RE: Balance Point Determination

Thanks! That was the entire idea behind Sailplane Calc. There is also Flying Wing Calc too! Also one for V-tails and they are also available in metric.

There is an article on how to use the...
Showing results 1 to 25 of 83
 


 
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