mickeymouse23

My Feedback: (1)

not having any luck finding a .10 size spad. i have a os .10 fp engine and a 24 inch sq. coro 4mm thick. mike

draftman1

well there arnt any on the spad to the bone site. but go to the spadworld.net site, there is a thread for smaller planes. there will be something there for you. maybe not plans but good info on how to build one. the 4 mill is ok but you will probably want to get some 2m. the gnat could be shrunk down for your .10 maybe 5 percent smaller would work ok. give it a try

draftman1

here is a good thread on the small plane, scroll down and you will see one, just what your looking for
http://spadworld.net/forum/viewtopic.php?t=14688

Team_Monkey

How experienced are you? I made a 18"x18" .15 powered PBF that flew fine. I flew it terrible but it had enough power.
barring that, draftman is right, the 4mm will be too heavy for much else.

PatrickCurry

My Feedback: (20)

This is kinda old so maybe you have already found something but if not, here is a 1/2A spad:

rsieminski

1st you gotta get more coro. Order it from Harbor, beg at the local gas station, etc. Then build a .15 sized FNS with 9 or 10" dihedral, and a 48" span. That .10, unless it's worn out, will pull it around. Prop it for thrust. Try an 8x3 and see if you get enough rpm out of it for 30mph or so (13K +). Another to have with you would be the 7x3. FNS is one of my favorites!

PatrickCurry

My Feedback: (20)

9 or 10" of dihedral?! Wow. Do you need that much to help it turn because it only has a .10 engine or because you like a lot of dihedral? How thick do you have to make that wing? I just made a 48" wing with only a 9" chord out of all 4mm and even with the yardsticks cut down to 1" tall, it was tough getting it clamped down and making the glue stick. I've got a nice CF arrow shaft spar all set up and ready to go, but I'm not sure that'll make the wing thick enough. Isn't there someformulaor percentage or something you're supposed to use to get the desired lift? I'm trying to figure out ways to go all 4mm because I've got 200 election signs, I love making something out of nothing and I'm trying to figure out ways to use them.

cyclingsarge

How about electric SPADS?

PatrickCurry

My Feedback: (20)

How about 'em?    Electric SPADs all over the place here.

rsieminski

That much dihedral will give you some stellar, un-trainer like performance.

combatpigg

My Feedback: (3)

Bear in mind that the cut-off weight for anything close to sporty performance with a .10 is about 20 ounces RTF. Weigh up all the essential gear and this is what you are left for the airframe weight allowance. I have never handled 2 mil coroplast, but would guess that a simple flying wing would be the lightest possible configuration for the best possible performance.
Something about 32"x8" with a pair of tip fins?

Popriv

What would the weight cutoff be for an OS .15LA ( coming by UPS today! )
I have a Gnat ready to go with it but I'm still working on different wings. Unfortunatley it looks like 4mm is my only options... Cant find 2mm reasonably priced.

I'm wondering what my weight limit will be with the .15LA?

POP

rsieminski

Now unless the .10 has the WAY less power than my old worn out LA 15, I respectfully disagree (maybe though, I don't have one). My .15 planes shown here(I'll post images). All well over 2# and have power to spare:

48 x 11.75 Polyhedral wing, 5" Dihedral each 12" side, 33" coro 5 sided box fuse, (with the LA 15, she flew well at 2/3-3/4 throttle) now has an ASP .21 on the nose, AUW 3lbs, 4oz.


I don't have the dims in front of me right now, but I know it weighed 2.75#, 48" span, LA15 for power (will fly at 2/3-3/4 throttle)




AUW 2# 6oz, 46in sym wing, 13.5in root chord, 7.5in tip chord, No Horizontal Stab, New Mag .15, with an 8x3 MAS prop, CG at 12%, 3 ch, elevon mixing, 20" x 2.375" x 2" coro fuse, Double tapered wing, 1 7/8 LE taper (will fly at 1/2 throttle)



The dims are 20" x 2.375" x 2" 20" coro fuse, 8.5" rear taper, Mag .15 for power, 48" x 7"tip x 8.5" root, tapered with the ailerons, no hor stab. 1/2" x 3' spar doubled 18" in the center. The best thing, AUW 2# even (will fly at < 1/2 throttle)

combatpigg

My Feedback: (3)

With enough wing area, even a SSC combat plane at 40 ozs has decent enough performance to fly combat with, but the vertical is very limited. If you like to fly with unlimited vertical with a .15...try to keep the weight to 28 ozs and use a 8x3 MAS.
Figure that a .10 has about 2/3rds the power of a .15. There is a big difference between enough power to maintain flight and enough power to climb vertically. There isn't much of a challenge involved with designing planes to achieve basic flight, there is more of a challenge to design well enough to achieve outstanding performance.
The weight limits for different engine sizes I've developed have come from personal experience and are only based on my opinion for how I like my planes to fly.

PatrickCurry

My Feedback: (20)

I don't think you'd want a Gnat with a 2mm wing with the way that wing is designed.  I'm working on one right now with 4mm and even with that I was worried about the wing flexing out of shape on the corners.  We shall see.   I've got an old OS 20FP I bought off the internet on it.