GIANT SPAD DESIGN! (update w/ pix)

GIANT SPAD DESIGN! (update w/ pix)
View related threads: (in this forum | in all forums)

Logged in as Guest

Users viewing this topic: none

Printable Version

All Forums >> RC Airplanes >> S.P.A.D. Aircraft - Coroplast design >> GIANT SPAD DESIGN! (update w/ pix)

Page: [1] 2 3 next > >>

Login

Message

<< Older Topic Newer Topic >>

GIANT SPAD DESIGN! (update w/ pix) - 11/10/2006 5:32:22 AM

Pilots12

Posts: 86
Joined: 7/6/2006
From: Northglenn, CO, USA
Status: offline

Well I just did some sketching on a new SPAD design and came up with this. I think it looks pretty sweet

I'm planning for it to have an 8 foot wing span and be around 6 to 7 ft long. It will be powered by two twin 61 2 strokes, one in front and one in back pushing. heres a quick computer sketch of it, what do you think!?

I'm still trying to figure out how I'm going to support and connect all 3 fuse sections. And support the nose section with the weight of the engine up front with out it warping the wing down.

< Message edited by Pilots12 -- 11/22/2006 8:17:33 PM >

Post #: 1

RE: GIANT SPAD DESIGN!!! - 11/10/2006 5:34:01 AM

novabill

Posts: 1773
Joined: 9/17/2003
From: Hudson, FL, USA
Status: offline

Crazy,

I love it!

(in reply to Pilots12)

Post #: 2

RE: GIANT SPAD DESIGN!!! - 11/10/2006 5:40:15 AM

Pilots12

Posts: 86
Joined: 7/6/2006
From: Northglenn, CO, USA
Status: offline

Another little sketch.

(in reply to novabill)

Post #: 3

RE: GIANT SPAD DESIGN!!! - 11/10/2006 2:37:05 PM

Dewane

Posts: 46
Joined: 7/19/2006
From: Benton, AR, USA
Status: offline

Spads are all about creativity,most anything can be done. Assuming you'll be using downspout its looks like it will be way tail heavy, especially with the pusher engine.

(in reply to Pilots12)

Post #: 4

RE: GIANT SPAD DESIGN!!! - 11/10/2006 2:55:51 PM

KidEpoxy

Posts: 3385
Joined: 10/14/2004
From: San Antonio, TX, USA
Status: online

some quick ideas-
The tail will lighten if you cut the booms bottom taper up to the stab
Cut into wing for rear engine to move as far forward as it can
Reduce the fuse long front arm and put stubby lil noses on the booms
--put servos/batts in the stubbys to balance tail
--shorter fuse lessens the warp potential as it gets more balanced w/ rear eng
move booms closer together for more strength keeping all incs aligned

just my 2cents on it, your milage may vary

_____________________________

Optional MA is part of AMA history, we can go optional AGAIN if we just say so

(in reply to Dewane)

Post #: 5

RE: GIANT SPAD DESIGN!!! - 11/10/2006 4:02:41 PM

Pilots12

Posts: 86
Joined: 7/6/2006
From: Northglenn, CO, USA
Status: offline

Yeah thats not exactly where the sections will be. I drew a scale picture on it on paper and its a little closer together that that. I'm also looking into making it a T-tail. As far as weight goes, I dont think it will be very heavy with this set up. So I'l probably be adding weight to it just so it doesnt fly like a rocket with 2 61's. I'll do some more work and get another update.

(in reply to KidEpoxy)

Post #: 6

RE: GIANT SPAD DESIGN!!! - 11/10/2006 4:24:37 PM

Dewane

Posts: 46
Joined: 7/19/2006
From: Benton, AR, USA
Status: offline

You'll be surprised how much it will weigh,if using downspout and 4mm coro for an 8ft wing.I'd say at least 14 lbs if not more. My 48" DPS with a30" fuse weighs over 6lbs.I think 2 60 size engines are up to the task but it wont be over powered.

(in reply to Pilots12)

Post #: 7

RE: GIANT SPAD DESIGN!!! - 11/10/2006 11:08:33 PM

Flying Arrow

Posts: 422
Joined: 3/31/2003
From: Riyadh, , SAUDI ARABIA
Status: offline

Great job. Keep the good work coming

(in reply to Dewane)

Post #: 8

RE: GIANT SPAD DESIGN!!! - 11/12/2006 10:44:59 AM

jamesg25

Posts: 89
Joined: 12/21/2005
From: , SINGAPORE
Status: offline

looks good, perhaps you could try replacing the downsput booms wiht alluminum U channel or L channel 1/8 thick with lightening holes drilled throught it to get some of that wieght off, and you will be able to keep the rgidity.

good stuff, look forward to the seeing the outcome

(in reply to Flying Arrow)

Post #: 9

RE: GIANT SPAD DESIGN!!! - 11/12/2006 2:32:27 PM

Clean

Posts: 990
Joined: 4/19/2002
From: Parkville, MO, USA
Status: online

I already did that, you know, sketched a mixmaster spad. I didn't build it, what, you think I'm crazy?

Looks like a cool idea, let us know how it turns out.

_____________________________

From Somewhere near Parkville, Mo.
William Crane (aka Mr Clean) Rever Brother #168 Time Man of the Year

(in reply to jamesg25)

Post #: 10

RE: GIANT SPAD DESIGN!!! - 11/12/2006 3:48:57 PM

Pilots12

Posts: 86
Joined: 7/6/2006
From: Northglenn, CO, USA
Status: offline

I changed a few things on it. Its now a T-tail, figured that would be better with the pusher prop right next to it so most of the prop wash wont flow over the horizontal stab. Also shortened both back sections.

I'm still trying to figure out something to hold the weight of the front section with the engines. It stick out 2 or 3 feet, and it seems the it will want to fall forward if only connected by the wing. So I'm thinking of maybe using wooden stick to hold all 3 together.

< Message edited by Pilots12 -- 11/12/2006 3:49:38 PM >

(in reply to Clean)

Post #: 11

RE: GIANT SPAD DESIGN!!! - 11/12/2006 6:41:50 PM

lecrote

Posts: 139
Joined: 5/12/2003
From: Ste-Madeleine, QC, CANADA
Status: offline

Looks here
http://www.adamaircraft.com/home.asp

Something similar!!!

Dan

_____________________________

Coro fly like balsa...
But it crash so much better!!!

(in reply to Pilots12)

Post #: 12

RE: GIANT SPAD DESIGN!!! - 11/12/2006 7:16:56 PM

Pilots12

Posts: 86
Joined: 7/6/2006
From: Northglenn, CO, USA
Status: offline

yeah thats were I got the idea from. I have a poster of the A500 haning in my room and when I thought of building a big plane with 2 engines, the first thing that jumped in my head was the poster. I like the look of the push-pull engine designs so figured I would come up with something similar

guess the only real difference is the RC is going to be a high wing.

(in reply to lecrote)

Post #: 13

RE: GIANT SPAD DESIGN!!! - 11/13/2006 12:49:10 PM

CTH

Posts: 17
Joined: 7/4/2006
From: , KY, USA
Status: offline

I think you'll have to use carbon fiber tubes for tail booms. I'd make the rudders out of a balsa lite-ply sandwich. Then you can make brackets to hold your coro elevator on. Inside the wing I'd make a 1/4" lite-ply plate that woud run the width of the tail booms. This should solve the tail weight problem.

(in reply to Pilots12)

Post #: 14

RE: GIANT SPAD DESIGN!!! - 11/13/2006 6:07:09 PM

Villa

Posts: 872
Joined: 8/12/2003
From: Wilson, NC,
Status: online

I have had a Pusher/Puller for about two years now. See it at http://www.rcuniverse.com/forum/m_1806004/anchors_1806004/mpage_1/key_pusher%252Cpuller/anchor/tm.htm#1806004 Wing span is 48 inches and engines are .28 Magnums. In the winter it has no problem taking off on one engine. The engines are supported by 1 inch aluminum square tubing. The two booms are aluminum angles. The square tubing and booms are anchord to hard points on the wing spar via 1/4-20NC steel bolts. The wing spar is made of two parallel yardsticks about one inch apart. Might give you a few ideas.

(in reply to CTH)

Post #: 15

RE: GIANT SPAD DESIGN!!! - 11/13/2006 6:36:30 PM

Clean

Posts: 990
Joined: 4/19/2002
From: Parkville, MO, USA
Status: online

CTH while using Carbon Fiber is ok this is the SPAD forum and using words like Ba!$a is verbotten. In fact, you choice of using high dollar Carbon Fiber along with that other stuff kinda makes me want to have the moderator boot ya!

Make it a T tail if ya like, but the one referrenced in the other thread is conventional and takes less rigging and weight.

_____________________________

From Somewhere near Parkville, Mo.
William Crane (aka Mr Clean) Rever Brother #168 Time Man of the Year

(in reply to Villa)

Post #: 16

RE: GIANT SPAD DESIGN!!! - 11/13/2006 9:19:25 PM

Pilots12