Project Rays - Manta - Page 18 - RC Groups
Shop our Airplanes Products Drone Products Sales
Thread Tools
Nov 03, 2008, 09:14 PM
Registered User
Geode's Avatar
As you know, my Manta wing tip is solid balsa. I simply cover the tip with ~1.5 oz fiber glass or Kevlar (with epoxy). In additional, a few drop of thin CA around the throwing blade will make the balsa last even longer.

Sign up now
to remove ads between posts
Nov 04, 2008, 11:19 AM
Registered User
My solution is almost the same; laminating 25 glass with CA around the peg.
Last edited by Smash; Nov 04, 2008 at 12:09 PM.
Nov 04, 2008, 12:25 PM
Registered User
I ended up putting some CF tow around the blade - probably overkill. I almost have the wing done and am about to start the fuse. The finished weight of the wing should be about 5.5 - 5.75 oz.
Nov 04, 2008, 01:05 PM
Ray...can't wait to see it!!
Nov 04, 2008, 02:06 PM
70 is the new 50
bobthenuke's Avatar
Hope you have this flying for the next contest, Ray!

Nov 04, 2008, 03:15 PM
Registered User
Hi Dave and Bob,
I hope so - just depends how much time I get to spend on it.
Dec 15, 2008, 02:33 PM
Registered User

I have started building another Manta, strictly alone without any help

I proceed very slowly with the building I have started around october but the wing has finished now. Good work needs much time, for bad work needs more

The wing is now 125 gr but the FG reinforcements from the wing tip and the middle is missing, and the launch peg is missing too, so it will stops around 160 gr with covering, but it is ok for me, if I look that the previous wing was 230gr. If I start again I would do a lot of thing in different way.

For 2009 we would like to organise an F3K competition in Hungary
I have started translate the F3K rules to hungarian, but there is an expression wich I cannot understand:
"Unintentional jettisoning"
Could any one explain what does it mean, because I don't find this any dictionary?

Dec 15, 2008, 02:46 PM
Make Flying Fun
Parts falling off!

unintentional = accidental, not on purpose
jettisoning = flying off, falling off
Last edited by KevinSharbonda; Dec 15, 2008 at 02:53 PM.
Dec 15, 2008, 11:09 PM
Registered User
Thank you very much!
Dec 16, 2008, 11:32 AM
Registered User
Geode's Avatar
Reducing weight from 230 grams to 160 grams That's quite a achievement.

Where are the weight saving came from?

Dec 17, 2008, 01:50 PM
Registered User

On the previous wing was used carbon reinforcements both on the main spar and the wingtips, but on this I will use only FG on the middel of the wing at the joint of the half wings and of course at the wingtip where the launching peg will be.

So that's the cause of the weight difference.

Dec 19, 2008, 08:58 AM
Registered User

I've made my first molded fuse for the Manta!

Check out the pictures if You are interested:
Dec 20, 2008, 10:02 AM
No conspiracy in theory
skorski's Avatar
Nice work!
Dec 21, 2008, 11:49 AM
Registered User
Thanks Mike!

I've made the second fuse and it's 22 gramms Photos coming soon!
Dec 21, 2008, 04:35 PM
Registered User
She's ready:

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