PSS Raptor Lite - RC Groups
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Apr 16, 2018, 05:33 PM
Registered User
Sand_'s Avatar
Mold wash time...
Apr 16, 2018, 05:39 PM
It's not going to build itself
TRISME's Avatar
Go Tom Go!
thinking light thoughts for you
Latest blog entry: Some vids
Apr 16, 2018, 06:27 PM
Registered User
Sand_'s Avatar
Hahaha ... Thanks Tom


Cool.

I am excited about this build.

tums up fly2bob for getting me fired up about it.

...and the flippin' Pt Fermin rangers... Sheesh.
Last edited by Sand_; Apr 17, 2018 at 10:36 PM.
Apr 16, 2018, 06:34 PM
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Sand_'s Avatar

Jim's Lite Cobra


How about all the fun Jim was having flying his lite Cobra at the PSS Fest last year !

Hahaha he had a huge grin on his face while he was flying the poop outa that Cobra and I was offering/heckling in the back ground... $20 bucks for that bird right then and there lol.

He was having a great time !
Apr 16, 2018, 07:27 PM
It's not going to build itself
TRISME's Avatar
Cool how you magically made the shadow resemble a guitar neck
Latest blog entry: Some vids
Apr 16, 2018, 10:34 PM
Registered User
Make your self a fuse lie the one you made for me with 4 oz S glass. Use 1/32 balsa wing sheeting. Put holes in the tail feathers to make them lighter.

Go light on the paint.
Just some "lite" ideas.

Tom f.
Apr 17, 2018, 02:34 AM
Registered User
Sand_'s Avatar
Quote:
Originally Posted by TomFlyer
Make your self a fuse lie the one you made for me with 4 oz S glass. Use 1/32 balsa wing sheeting. Put holes in the tail feathers to make them lighter.

Go light on the paint.
Just some "lite" ideas.

Tom f.
Good one TomF Tums up
Apr 17, 2018, 02:35 AM
Registered User
Sand_'s Avatar
Quote:
Originally Posted by TRISME
Cool how you magically made the shadow resemble a guitar neck
Hahaha dems is feetís
Apr 17, 2018, 10:25 AM
Gliders ain't drones!
Zenmaniac's Avatar
Quote:
Originally Posted by Sand_
Hahaha dems is frets
Fixed your spelling

-= Dave
Apr 17, 2018, 11:19 AM
Registered User

Sweet project!!


What a great design and what a great idea to make a lite one!! I I love the RG 14 airfoil and I think your on the right track to making a very very nice average lift flying airplane!! heavy planes have there place, but I personally like lite planes that can be flown more often on average conditions! Keep up the great work!!! I will be following this one close! ďCheers ď Mike
Apr 18, 2018, 10:25 AM
DWA
DWA
1Corinthians 13:1-8
DWA's Avatar
I like lite!


Dave
Latest blog entry: Carbon Fiber Bird
Apr 21, 2018, 03:00 AM
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fly2bob's Avatar
Finally sought out this thread.

Anytime we design a glider, or kit bash for that matter, we take into consideration where we fly at & in what conditions. Obviously, Raptor #1 & #2 are for places like Fermin (or Torrey) in good to excellent wind and lift. I assume with this build you are going for someplace like LB to fly in min 10mph lift. I modified my Shrike w/ a 58" w/s vs 54" and blunted the LE (mod 6062 airfoil I guess, pic below). That wing flies excellent for the smaller slopes I fly at down here in San Diego, and the wind conditions that are typical down here.........10mph. Although it weighs 25oz.'s it flies in light lift, yet even with the blunt LE it can go fast . The standard RG14 you are using looks good. I would even suggest blunting that LE, making slow flight on landings easier. The nice thing about this fuse, besides it's nice F-20 looking lines is that the nose is pretty long, which should enable one to not have too add much nose weight with all but the aileron servo far forward.

Wondering what the w/s is of Raptor #1 & 2? Are they the same w/s?

And what was the FG layup for the fuses?

What will the FG layup be on this fuse?

What do you expect this lite fuse to weigh?

To fly someplace like LB in min 10mph winds, a lite version is the way to go, but, personally, in my opinion, you don't want to go so light on things that it will get cracked up easily either. I think going with 1/32" sheeting is going too light. 1/16" sheeting should be fine so long as you don't use C grain balsa and go with lighter balsa. One thing that will definitely save weight is the LE, by obviously not using 3/4" basswood. I would suggest something like a 1/2" (height) x 1/4" (horizontal) balsa LE with something like 1/4" (height) x 3/16" (horizontal) basswood in front of that, just so you have a little bit of hardwood up front to resists dents. Most of that hardwood will be shaved off when shaping the LE. For the TE................ you could just cut 1/4" off the TE and attach a 1/8"x1/4" basswood to shape and sand to make a sharp TE. For the ailerons, just cut them out of the wing 1/8" further forward of where the hinge line will be, then cut 1/4" off the front of the ailerons, and glue on 1/8" balsa to the front of the ailerons, and sub TE of the wing, so that's it's 1/8" against 1/8" balsa.

Since you'll no doubt be using a lighter layup of FG on the fuse, may I suggest a little CF tow on each side so it's still strong enough like your QS2.

I would suggest making the w/s a little longer, say 1" or 2" each side, but know you won't.

Gonna be cool beans tho.
Last edited by fly2bob; Apr 21, 2018 at 02:30 PM.
Apr 21, 2018, 01:41 PM
Registered User
TFLG's Avatar
We have aircobras from 19 oz and up, P-51s and Me-109s from 23oz etc. So 25 for a Raptor should be easy especially since you wont need nose weight with that lone nose. I don't think you even need that light foam. We still used dow blue. They key is picking nice light wood. You can order contest grade which is crazy light. But I find that stuff is just too fragile. Just pick thru the wood and get the lightest sheets you can find. Use an all balsa LE of just put a small basswood LE (1/4"). On our last builds we used 1/4 bass glued to a 1/4 balsa for the leading edge.

NO BONDO! build all the parts, cover the wing and tail with Monokote. Sand and prime the fuse and then sand nearly all the primer off. Then spray a light coat of color on it. Try and keep the scheme simple, one color with a few stickers is all you need. Glue on the wing, and tail bits after the fuse is painted, again NO BONDO. Use small servos, a mini for the ailerons, a micro for elevator. Small rec, and small battery. I don't see any reason this can't come out around 20 oz if you can make a fuse around 6 to 7 oz.


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