All,

I'll share my winter project with you. It keeps me motivated to get as much done as possible during the Christmas break.

This will be a Deception .40 from scaled plans. I plan to use the OS .55 AX. Covering will definitely be Monokote. Sorry in advance to the purists, but this will be a fixed gear tail-dragger.

I've completed a few steps, so I'll just make a few posts to catch up.

Mitch

Fuselage sides are traced from the plan. The tracing is glued to posterboard to be used as a template.

Mitch

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Tail parts are done the same way. I'm using 3/8 balsa for the rudder and vertical stab. The fuse top will also be 3/8.

I used 1/2 inch triangle stock for the top of the fuse, and 3/8 for the bottom. This will require me to design fuselage frames and the firewall to fit. I'll probably widen the nose slightly because it's a tight fit for the engine mount.

That's the progress so far. My goal is to be framed up and ready to cover by January 3. I'll update as significant progress is made. Your questions and comments are welcomed.

I am waiting for a friend with a CNC foam cutter to come through for me and cut cores. If this does not pan-out, I'll have to send it out for custom cutting. Solicitations and a quote are welcome here.

Mitch

Mitch,

What's the wingspan going to be for your OS .55AX powered Deception? I'm at just about the same point as you for a full size (Webra Speed .61) Deception build, also a tail dragger... (waiting for some CF tape before I skin the wings) but I decided to build up the tail fin and rudder, rather than use 1/2" sheet; foam cores (wing and stab) from Scott Anderson.

Greg

Greg,

Here are the specs:

Wingspan: 52 inch
Wing Area: 514 Sq. inch
Length: 48 1/2 inch
Weight: I'm shooting for 5 1/2 lbs

Engine: OS .55 AX

Should be a rocket!

Mitch

Good stuff Mitch,

I made some progress on the CAD plans so I'll try to get those to you later today.

Greg, a couple of questions (well, three):

1) Did you decide that going the foam core route was preferable to the built up from last year? How did you find putting together the framed up wing last year? Any major issues?

2) How are you planning on going about the built up vertical? I've been thinking about that on and off for some time - it would be cool to do.

3) Is the Speed 61 the same engine you used last year? As a means to augment my rather thin European engine selection (aside from ST's), I decided to buy a nice Webra RE. It's not new but looks to be in pretty good shape - we'll see when it arrives. I thought that a RE setup on the D60 might be a cool alternative - sort of in line with what Jim did with his later Deceptions and variations on that design.

By the way, the span of the D40 is 52" - I scaled this version with a 40 VF/SF or some such in mind. I also scaled a D50 to 56" span with a YS 45 FR or OS 50 FSR in mind. This latter would also do well on the 55 AX but like you, Mitch likes his models "well charged"

David.

P.S. Mitch, hope you don't mind if I post some Deception engine options in your thread (D40 & D60).

Thanks David.

I don't mind at all, you are welcome to post anything that you think is relevant.

Mitch

Cool,

Mitch, are you planning on glassing a foam plug for the canopy?

Here are some other very fitting options for the D40:

YS 45 FR and FS.

David.

Greg,

If you need CF tape let me know I have about 500 feet x 24 inches of .007 pre peg...

scott

a 55 will fly a 60 size deception...

Mitch,

if you can bring her in at 80 oz AUW (5 lbs), that would give you a nice 22.5 oz/sq ft loading - nice for a 40 size pattern model. I have the feeling that you can bring that airframe in at 40-45 oz - especially if you are going to be covering with MK. What servos do you have in mind? You could go with mini's on the ailerons and throttle, then two standard on elevator and rudder.

For reference, my MK covered Tsunami 40 (with a 58" span) with a ST S40 and a tuned pipe and 5 standard servos came in at 5 lbs dry on the nose. That leaves you with 8 oz of "room" for fuel. It is also conventional gear but is a light airframe in design. For the D40 you could use 1/8" fuse sides and bottom and 5/16" fuse top. If you want to keep it light, use only a frame of 1/8" for the inner fuse top under an outer 3/16" fuse top. After all, you don't really need all that thickness on top other than on the sides to shape the fuse. You could definitely shave some ounces there.

Greg, how much did your painted Tsunami weigh with the muffled 55 AX?

David.

I know.

Scott: Can you tell me how much it would be to have cores cut for the D-40?

Mitch

David,

Good weight saving suggestions. I was thinking the same thing about the fuse top. An alternative would be to tack glue the top, shave it to shape, remove it, and then hollow it out.

Then I would get that pleasing round top at a reduced weight.

Good advice on the servos. I'll take it!

Too late on the fuse sides, I've already used 3/16. I guess I could cut a truss pattern in the sides, but then it wouldn't have the "Deception" look anymore.

Mitch

David,

Yes, I'm planning on a glassed foam canopy. It may also come with a little "surprise".

Mitch

You're painting a pilot on to the sides!?

David.

David,

No, I'm thinking of putting in provisions for a removable canalyzer. A reinforced slot on the center-line of the canopy.

I know that this is an odd mix of classic and new, but I'd like to play with the size and shape in order to eliminate the issues with the knife edge that fixed aluminum landing gear brings.

I'd like to have the ability to remove it and leave little trace. And to change the size and shape at will.

(remember my comments about trout?)

Mitch

I would need to have the airfoil tip and root for wing and stab 9root/tip) at the proper scaled size.

I will PM you also...

David,

Main problem(s) with my built up wing last year were weight (I don't know how to build light) and keeping it straight. Scott has brought me out of the ice age of old style foam wings with his great cores. I'm thinking I'll see a much lighter airplane this time around. Plus... the first build was pretty time consuming.

The vertical fin and rudder were framed in 1/4" x 1/4' and 1/4" x 1/2" strips of light balsa. Embedded a small piece of 1/4" ply to hold the steering "tiller" arm of the tail wheel wire, then 1/8" light balsa skins to make the 1/2" thickness I needed.

The Webra RE should be awsome. Tell me about the pipe you end up using.

The Tsunami was running the OS .55AX and it weighed (roughly) 7.5lbs. Really fast! Deception number 1 (with the Webra .61) was about 8.5lbs and flew pretty well once I got the engine problems solved. Would have been better if the wing had been perfectly straight and the weight a little lower.

Scott,

I have the CF tape on order. It should be delivered in a day or two. Thanks for the offer. I like the foam work you did so much, I'm thinking ahead to resurecting my original W-K Hobbies Tiporare with a new wing and stab for the next project after the Deception. I'll ask you for a quote when I get closer to that project.. or you could PM me with that quote knowing it'll probably be a couple of months before I order it.

Greg

Scott,

Reply to PM sent. Please send my your email and I'll reply with the PDF file that shows the dimensions and is to scale.

Mitch

Mitch,

here's where I'm at with the D45 CAD plan.

The airfoil is rather crude since it is drawn from the original plans but the overall dimensions ought to be a little more accurate. At least lines are straight.

Scott, Mitch, if you'd rather work from these to cut cores, just let me know. Stab airfoils still missing (although they are there within the ribs which are still rough).

David.

Argh! RCU is not uploading files. Will try again later. Posted images later in the thread.