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Tim Hooper11/10/2012 21:35:47
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Since the original 48" CS flew and was subsequently published, I've received a steady trickle of requests for a larger version. Now that the editorial team has also started in on me, I thought I'd better have a bash at it!

So we're looking at a 60" version to suit a 5S set-up. Besides being a handy size on the flightline, 60" is also deemed to be the largest size that will fit on a freebie plan. That's good enough for me!

I've decided to switch from the 10% aerofoil of the original, and go to a 12% semi-symmetrical section instead. The aluminium wing joiner is going to be replaced by a hardwood joiner - I heard tales that epoxy won't bond to ali as well as it does to wood.

I'd like to make the T-mounted tailplane removable too.

So the crayons are out again, and so far I've pencilled in the general outlines. I've referred back to my original sketch in order to get the proportions right.

tim

Robin Kearney11/10/2012 21:44:58
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1072 forum posts
183 photos

Really looking forward to this one Tim!

Concorde Speedbird11/10/2012 21:46:26
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2717 forum posts
631 photos

Niceee. Semi symmetrical aerofoil sounds goodthumbs up

Also sounds like 60-70 four stroke territory... (sorry I am always thinking about IC conversions!)

Keep up the good work!

CS

Jon Laughton12/10/2012 11:20:25
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1172 forum posts
104 photos

Now I am really interested - the 48" was a great looking model but a tad too small for me and I like the sound of its big brother having a .55 engine up front!

Will this be a free plan or just an addiiton to the plan store

Are there plans for a wood pack etc as well?

Jon

 

Edited By Jon Laughton on 12/10/2012 11:20:48

David Ashby - Moderator12/10/2012 11:35:08
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Nice one Tim, we didn't twist his arm too much folks, honest wink 2

Jon, free plan yes and a wood pack yes, all being well.

Jon Laughton12/10/2012 11:42:41
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1172 forum posts
104 photos

Thanks David - that' great but it looks like another project for the forthcoming winter then!surprise

May have to be spring as I am planning on a trad build Supermarine Type 224 after I have assembled the H9 Corsair that is! All with OS 55s marked down for them...where's the flippin piggy bank?smile p

And.....I was forgetting that I quite fancied the Tucano that's leading the 2013 mass build - doh!

Being a subscriber on this forum is getting very dangerous with all the temptation around!

Jon

Lee Smalley12/10/2012 13:29:11
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2125 forum posts
68 photos
2 articles

Foam wings ..... Foam wings .…please either supply end templates or ask cloud models to offer wings for her then she is a really quick build (only the fus to build) for the lazy sods amongst us! Please !!!!!

Chris Bott - Moderator12/10/2012 13:47:37
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Oooh perfect for 6S A123's methinks

Jon Laughton12/10/2012 13:58:45
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1172 forum posts
104 photos

Irrespective of the wing construction with there be one or two aileron servos in the 'as drawn' design?

Tim Hooper12/10/2012 20:34:51
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2855 forum posts
2363 photos

No pressure then.......smile o

Right, I'm expecting this project to take me up to Crimbo, so it'll be liable a little while after that before it's flight-tested and published. All being well, that is.

What can possible go wrong?

Right, time for a few piccies......

Here's an exciting shot of my notebook and the Profili-generated aerofoils. I'm using an E207 section - whatever that means...

img_1402.jpg

Here's the wing plan. There's an aileron in each panel too!

img_1403.jpg

...and the fuselage plan is quite well advanced...

img_1406.jpg

There's a no-name 4260 600kv motor from Giant Shark (looks like an earlier Turnigy to me, but it's only 20 quid!), an 80A Turnigy ESC and a 5S 4000Mah pack.

img_1399.jpg

Here's the motor, spinner and cell pack being tried for size.

img_1408.jpg

Lee, wouldn't it be possible to work out end templates from the drawn ribs? I've no experience of foam cutting, so any input would be useful!

Mind you, I do need to sort out a moulded canopy on this one, so I'll be reseaching moulding techniques at some stage or other...

tim

Lee Smalley12/10/2012 20:48:18
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2125 forum posts
68 photos
2 articles

it would be possible but it would be even nicer if myhobby store sorted out some foam wings for her, lets face it they do the galaxy kits now so this can not be to hard, but not keen on the E207 section for a sportster! but then i like aerobats to be aerobats

Tim Hooper13/10/2012 20:40:53
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2855 forum posts
2363 photos

Balsa has been cut!

I've edged joined the 1/16 wing skins using Fairy Liquid as an adhesive......

img_1437.jpg

Good eh?

tim

Andrew76713/10/2012 20:45:05
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809 forum posts
4 photos

Come come now Tim...Thats a fib isn't it.laugh

Andrew

Stephen Jones13/10/2012 21:48:48
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2652 forum posts
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Posted by Tim Hooper on 13/10/2012 20:40:53:

Balsa has been cut!

I've edged joined the 1/16 wing skins using Fairy Liquid as an adhesive......

img_1437.jpg

Good eh?

tim

Surly not , Just an ideal paper weight ! .

Steve Intrigued  ,

 

 

 

Edited By Stephen Jones on 13/10/2012 21:50:38

Chris Bott - Moderator13/10/2012 21:51:28
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I think it's fairy PVA, probably makes the wing lighter or something?

Tim Hooper13/10/2012 22:59:43
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2855 forum posts
2363 photos

Ok, I'll confess.

It's full of aliphatic resin......

tim

Dylan Reynolds LaserCraft Services13/10/2012 23:13:49
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1704 forum posts
661 photos

liking this, i was considering the original but, again thought it was a tad small for me, but this one will be perfect, big thumbs up from methumbs up

looking forward to publication

Danny Fenton13/10/2012 23:23:41
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9081 forum posts
3928 photos

I may be strange, and some may say mad. but starting a build with the wing skins!

cheers

Danny

Concorde Speedbird13/10/2012 23:25:40
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2717 forum posts
631 photos

Don't worry Danny, I agree, so either we are normal or both strange...

CS

Tim Hooper14/10/2012 22:10:51
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2855 forum posts
2363 photos

So what's odd about starting with the wing skins? On the CS you need the completed wing, bolted to the fus in order to make the upper decking. The wings are built on the lower skins. So the skins come first, OK?

It all makes sense - honest!

Right, after a blissful session at the field, followed by a life or death struggle with a recalcitrant lawn mower, I eventually got back into the workshop for an hour and marked out the lower skins.

img_1438.jpg

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