Re: CEF speed contest Design Discussions

OVERLORD Mon Feb 10, 2014 2:17 pm

You all made stunning airplanes: Bearcat, Mustang, Corsair, an exotic flying Bugatti and the others I forgot to mention. I'm again way behind. I finished the second part of the cowl and need more hands to my body to hold it all in place and take a picture.

speed - CEF speed contest Design Discussions - Page 23 Imgp7611

speed - CEF speed contest Design Discussions - Page 23 Imgp7611

Today, I started making the nose block using 6mm thick balsa. I didn't use very soft wood as it needs a lot of manipulating and turning around. With an exacto chisel, I made the air intake. After drawing the intake with a pencil, I cut along the lines straight into the wood with a chisel and a knife for the curves. Then I removed the wood bit by bit. I finished with sanding the sides slightly.

speed - CEF speed contest Design Discussions - Page 23 Imgp7613

speed - CEF speed contest Design Discussions - Page 23 Imgp7613

speed - CEF speed contest Design Discussions - Page 23 Imgp7614

speed - CEF speed contest Design Discussions - Page 23 Imgp7615

Next job is to make the hole for the engine and sanding the outer edges.

Lieven

ian1954 Mon Feb 10, 2014 2:35 pm

That is a display of patience!

ebeneezer Tue Feb 11, 2014 1:05 pm

Wow great modelling Lieven, I'm getting pleasure just looking at it. Thats the great thing about real aeromedelling, building the model is a pleasure in itself, Then you get the pleasure of flying it, a win/win situation. Well I've ordered the bits to build a bladder tank from Texas Timers. Are whats in the attatched pic postage backplates? If so, I just remove the spray bar and put it into my Killer Bee backplate. Obviously I wont do it to the metal postage stamp backplate.

Cheers Mike Flying

speed - CEF speed contest Design Discussions - Page 23 Dsc02015

**RknRusty** Tue Feb 11, 2014 2:55 pm

Yep, that's them. The red one should be fine thread.
Rusty

OVERLORD Wed Feb 12, 2014 2:15 am

sanded and glued, or the other way around.

speed - CEF speed contest Design Discussions - Page 23 Imgp7710

speed - CEF speed contest Design Discussions - Page 23 Imgp7711

speed - CEF speed contest Design Discussions - Page 23 Imgp7712

ebeneezer Wed Feb 12, 2014 4:05 am

Thats some really good building, I can't wait to see the completed plane. You've now inspired me to build a Geebee R3. I know its not ellible for our comp, but it will be intresting to see if having learned a bit about building a 1/2A speed model. I can make it faster than my Bugatti.
speed - CEF speed contest Design Discussions - Page 23 Geebee11

speed - CEF speed contest Design Discussions - Page 23 Geebee11

OVERLORD Wed Feb 12, 2014 5:05 am

Thanks guys, That Gee Bee would be a nice project indeed. Very streamlined, it would merit a full fuselage made of laminated balsa.

I had some time this morning to fiddle a bit on the cowl. Here pictures of the first trials to fit everything with the engine mounted.

speed - CEF speed contest Design Discussions - Page 23 Imgp7713

speed - CEF speed contest Design Discussions - Page 23 Imgp7713

speed - CEF speed contest Design Discussions - Page 23 Imgp7714

speed - CEF speed contest Design Discussions - Page 23 Imgp7715

Lieven

getback Wed Feb 12, 2014 5:48 am

Looking really good there Lieven ,what kind of tank are you using ? I though about the way you made that jig to shape your cowel ,very nice but more than I needed . I just clamped mine around a flashlight , been two days should be ready to check today . got a cold kicking me around so things are moving slow, iam waiting on some fasteners for the engine be here soon Biplane

duke.johnson Wed Feb 12, 2014 8:28 am

Really nice work!

roddie Wed Feb 12, 2014 9:29 am

Lieven, That is slick!!! Thumbs Up

Eric, Hope you feel better.

Roddie

OVERLORD Wed Feb 12, 2014 11:26 am

Glad you liked the pictures.

Now you guys gonna thing that I'm completely bonkers. Until now I only showed pictures of starboard side. At port, however, I made this:

A bonnet that you can open and close

speed - CEF speed contest Design Discussions - Page 23 Imgp7716

speed - CEF speed contest Design Discussions - Page 23 Imgp7716

Lieven

roddie Wed Feb 12, 2014 12:29 pm

OVERLORD wrote:Glad you liked the pictures.

Now you guys gonna thing that I'm completely bonkers. Until now I only showed pictures of starboard side. At port, however, I made this:

A bonnet that you can open and close

Lieven

That's Radical!!! A single tiny "Rare-Earth" magnet and Tin strip/tab "glued-in" would hold it shut.

Very cool!!!

Roddie

navion34 Wed Feb 12, 2014 12:51 pm

Lieven, that's a fantastic job !!!!

I think you have to change your prop, 6X4 for a bee, it's too big...

Rémy

duke.johnson Wed Feb 12, 2014 1:59 pm

I'd use that prop. lol!

pkrankow Wed Feb 12, 2014 1:59 pm

I ordered a stack of 1x3 mm rare earth magnets off ebay for stuff not to different from that awesome "bonnet"

Nothing wrong with that prop that a saw, and a re-balancing won't fix.

Phil

getback Wed Feb 12, 2014 2:43 pm

OVERLORD wrote:Thanks guys, That Gee Bee would be a nice project indeed. Very streamlined, it would merit a full fuselage made of laminated balsa.

I had some time this morning to fiddle a bit on the cowl. Here pictures of the first trials to fit everything with the engine mounted.

Lieven

that's quality work very good had to go back and ck. ur other post hope u don't mine Embarassed

getback Wed Feb 12, 2014 2:54 pm

thought I was gone o no , Roddie thanks man feel better to day . I ran 6x4 props on the same engine long time ago and had no problems being all I could bee speed - CEF speed contest Design Discussions - Page 23 Wp_20142

speed - CEF speed contest Design Discussions - Page 23 Wp_20142

better shot.. speed - CEF speed contest Design Discussions - Page 23 Wp_20143

told Leiven I went cheap way out Very Happy

got some good ideas from u guys , Thanks time to reload the salty dog may do alittle measuring afterwards . Eric out

Mark Boesen Wed Feb 12, 2014 7:00 pm

Hi Lieven,

Great build! When you get'er all done, you need to get some little plastic guys and take a photo of them working on the engine with the 'bonnet' up!

Mark

roddie Wed Feb 12, 2014 8:38 pm

Mark Boesen wrote:Hi Lieven,

Great build! When you get'er all done, you need to get some little plastic guys and take a photo of them working on the engine with the 'bonnet' up!

Mark

Here you go.. they're 1:18 scale... That's Lieven.. in the middle!

speed - CEF speed contest Design Discussions - Page 23 Set-1-10

**RknRusty** Thu Feb 13, 2014 8:59 am

I'll post here so as not to over tax the roll call.
In the roll call thread, Roddie suggested scoping the engine note. In the attic I have an old tube Eico scope I built back in the '70s. It probably still works. Its calibration surely isn't perfect but I can get it down and burn it in for a couple of days to use if no one else has one. Shoot, there's probably an app, now that I think about it.
Rusty

roddie Thu Feb 13, 2014 9:10 am

RknRusty wrote:
I'll post here so as not to over tax the roll call.
In the roll call thread, Roddie suggested scoping the engine note. In the attic I have an old tube Eico scope I built back in the '70s. It probably still works. Its calibration surely isn't perfect but I can get it down and burn it in for a couple of days to use if no one else has one. Shoot, there's probably an app, now that I think about it.
Rusty

Yea...

I just shot Jim a PM apologizing about that... It started as a "video ability" recommendation... and I got carried away.

Roddie

roddie Wed Feb 19, 2014 3:42 pm

anyone got any more done than me? (I hope...) I'm tempted to build a heated-box/enclosure/spray booth, just so I can paint this darn thing! Laughing

It sure wouldn't have to be very big for this model. My wife gets migraines just smelling WD40. Crying or Very sad

so I'd have to vent it out of my basement workshop somehow.

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speed - CEF speed contest Design Discussions - Page 23 2-19-111

speed - CEF speed contest Design Discussions - Page 23 2-19-112

Mark Boesen Wed Feb 19, 2014 4:05 pm

...i'm still building the Shoestring in my head, did cut out a wing and fuse for a Reno mustang, Stiletto.

batjac Wed Feb 19, 2014 5:44 pm

OVERLORD wrote:Glad you liked the pictures.

Now you guys gonna thing that I'm completely bonkers. Until now I only showed pictures of starboard side. At port, however, I made this:

A bonnet that you can open and close

Lieven

And you're gonna fly that? If I spent that much time making an awesome cowl like that, I'd bee to afraid to fly it.
The Chicken Mark

roddie Wed Feb 19, 2014 8:13 pm

I switched to .015" solids, from the overkill .031's.. and scrapped my adj. lead-out guide design.

speed - CEF speed contest Design Discussions - Page 23 2-19-113

speed - CEF speed contest Design Discussions - Page 23 2-19-113

speed - CEF speed contest Design Discussions - Page 23 2-19-114

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