Thread Tools
Old May 29, 2007, 05:06 PM
Geode is offline
Find More Posts by Geode
Registered User
Geode's Avatar
Quote:
Originally Posted by Cebola
Has a example, this is the fuse that I intend to build for my Manta......
Great, I like diversity. The FG/balsa/FG sandwich must be as strong as the molded wing (similar construction method).

BTW, I'm also working on a balsa pod - "sliced bread" type construction and Rendy is working on his molded pod. Keep the goodies coming .....
Sign up now
to remove ads between posts
Old May 30, 2007, 06:32 AM
kimhey is offline
Find More Posts by kimhey
Registered User
kimhey's Avatar
Great,Rendy!

Will follow this build..

Kim
Old May 30, 2007, 03:01 PM
ajroahkni is offline
Find More Posts by ajroahkni
PWP!
ajroahkni's Avatar
What's the secret to such perfectly cut TE grooves?
Old May 30, 2007, 08:06 PM
Geode is offline
Find More Posts by Geode
Registered User
Geode's Avatar
Rendy has the skill and I have the tool .....

I got something similar to this needle file set - http://www.harborfreight.com/cpi/cta...itemnumber=468

A few pass with square file, it's done.

Well......, Rendy's cut is cleaner though.
Last edited by Geode; May 30, 2007 at 08:13 PM.
Old May 30, 2007, 09:11 PM
Rocketman209 is offline
Find More Posts by Rocketman209
Registered User
I must say that I am very impressed with this design. I like the covering material. is it very smoth surfaced?

does anyone have a link for a supplier of this covering material?

Thanks

Walter
Old May 30, 2007, 09:26 PM
Geode is offline
Find More Posts by Geode
Registered User
Geode's Avatar
The surface is not as smooth as film covering. The surface texture is just like the Ripstop kite.

More detail on Icarex supplier and covering method can be found here - http://www.tufflight.com/icarex.html
Old May 31, 2007, 12:19 AM
markdrela is offline
Find More Posts by markdrela
Registered User
Quote:
Originally Posted by Geode
The surface is not as smooth as film covering. The surface texture is just like the Ripstop kite.
More detail on Icarex supplier and covering method can be found here - http://www.tufflight.com/icarex.html
A word of warning: The "1/2 oz" weight is NOT the actual weight of this stuff. I weighed it when I used it for an IFO -- it's actually more like 1 oz/yd^2, which is about the same as Ultrakote Lite.

Perhaps the "1/2 oz" refers to the weight of the woven fabric before the polyester film is added to it.
Old May 31, 2007, 09:27 AM
Geode is offline
Find More Posts by Geode
Registered User
Geode's Avatar

Icarex


A quick comparison of actual covering weight from my build-up DLG's (normalized to Manta wing size of 2 X 387 in2)

......................................Actual ...... Actual ......... Retailer Info
So-lite ........................... 15 g ....... 0.89 oz/yd2 .... 0.6 oz/yd2
Icarex only ..................... 18.4g ..... 1.09 oz/yd2 ..... 0.5 oz/yd2
Icarex w/ 3M77 & CA......... 30 g ...... 1.78 oz/yd2 ..... NA

Polyester is one thing and may be color is another one for the difference between actual and retailer info (http://www.wattflyer.com/forums/show...3&postcount=1).

The tradeoff is "ripstop capability" + "biased covering" vs. "15g weight penalty" + "surface texture". Perhaps this is why Betamax choose to use Icarex/Mylar combination ......... Your choice.

BTW, Rendy is with you on So-lite/Ultrakote-lite...... .

Rendy, with film covering and ligter tail feathers, your AUW target has been re-adjusted from 9.9 oz to 9.0 oz ........ ..... With 3.35 oz/ft2 wing loading, it's going to be a sweet Manta .....
Last edited by Geode; May 31, 2007 at 09:47 AM.
Old May 31, 2007, 11:53 AM
Geode is offline
Find More Posts by Geode
Registered User
Geode's Avatar

Wing Tip Shaping


For those who do not like free-hand sanding on wing tips, here is something might be helpful.

The tip has been "sliced" into three-piece contours. Stack three layers of 1/8" balsa to form the tip. R+1 and R+2 is above chord line and R-1 below. Sand to shape until the ridge disappears.
Old May 31, 2007, 03:02 PM
Ricardo RW is offline
Find More Posts by Ricardo RW
.: Looking for Thermals :.
Ricardo RW's Avatar
ĦĦĦBRAVO, BRAVO, BRAVO!!!

My hat off.

And thank you for sharing it with us.

Ricardo.
Old Jun 01, 2007, 02:13 AM
Rendy is offline
Find More Posts by Rendy
Registered User
Rendy's Avatar

Rendy's Manta: tail group photos


Tail surfaces done. Total weight : 12.6 g.


Thread Tools

Similar Threads
Category Thread Thread Starter Forum Replies Last Post
Discussion Project Rays - Hyperbolic Manta Geode Hand Launch 28 Jun 12, 2008 10:50 AM