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C17 Globemaster III - 1/15th Scale for PSS

CAD to slope - 133" span

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Andy Meade15/02/2016 09:32:40
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laugh she does try though, bless her.

Peter Garsden15/02/2016 19:49:05
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It's a dog's life. I think there will be room for her inside the fuselage?

Monz15/02/2016 19:56:35
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Nice! What ply is that and where from?

Andy Meade15/02/2016 21:17:08
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It's just waterproof 4mm ply from the builder's merchants. Nothing special as it's meant to be a cheap aircraft! If that was liteply I'd be bankrupt by now surprise

Here is a basic dry build to test former locations are OK for the nose section, alongside the A10 nose :

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The formers will of course be hollowed out, apart from F1 which will be solid so I can bolt lead plates to it.

Edited By Andy Meade on 15/02/2016 21:17:58

Flyer15/02/2016 21:33:12
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Very nice Andy,

I believe you said earlier that the fuselage will have a join; can I ask how you manage that? I'm almost at the stage of drawing up the AC130, so could be very useful for me.

Cheers

Ade

Andy Meade15/02/2016 21:39:06
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Hi Ade and thanks!

The load of the weight and flight forces from the tail section are transferred into the ply structure via 15mm aluminium wing joiner tubes.

I did this a similar way on the A10, but there I only used 2. The C17 uses 3 (much more tail area). So the loads are carried by the tubes and the whole thing will be pulled together with wire fence tensioners - again a carry over from what I used on the A10. If you need some pics of how I did that, take a look on the build blog on this site
Steve McLaren15/02/2016 21:46:05
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Scary!! How will you launch this one?

Andy Meade15/02/2016 21:47:52
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Like a DLG -a quick spin and up from the wingtip weeeeee!
Flyer15/02/2016 21:57:08
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Posted by Andy Meade on 15/02/2016 21:39:06:
Hi Ade and thanks!

The load of the weight and flight forces from the tail section are transferred into the ply structure via 15mm aluminium wing joiner tubes.

I did this a similar way on the A10, but there I only used 2. The C17 uses 3 (much more tail area). So the loads are carried by the tubes and the whole thing will be pulled together with wire fence tensioners - again a carry over from what I used on the A10. If you need some pics of how I did that, take a look on the build blog on this site

Thanks Andy; just found the pic of the tensioners; know now what you mean. Many thanks

Ade

Monz15/02/2016 22:20:38
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Posted by Andy Meade on 15/02/2016 21:17:08:

It's just waterproof 4mm ply from the builder's merchants. Nothing special as it's meant to be a cheap aircraft! If that was liteply I'd be bankrupt by now surprise

Cool, I used 3mm from Wickes (rubbish stuff) on the Imp. Which shop was it from? Want to build up a repository of budget large model building supplies

Andy Meade15/02/2016 22:28:09
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From a local supplier called BPS. I think they have branches around the place.
Phil Cooke15/02/2016 23:05:20
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Looking good Andy - as usual - fast progress on the band saw!! Impressive. Good size for this sort of model!!

Apols for off topic, but I have to ask - what's going on in the A-10 cockpit?? - looks like an Ibiza foam party!

Andy Meade15/02/2016 23:27:31
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Yeah it does look odd! Thin foam inside to stop the pilot head butting the inside of the cockpit during transport and storage. His helmet has already marked the plastic unfortunately!

Andy Meade29/02/2016 08:52:17
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A bit of progress, but not as quick as I was hoping yet. Time is limited with a bathroom rebuild going on, and 7 PSS builds in various states all vying for attention.

So, The Good Lady Wife helped me cut these on Sunday :

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3.4m metres of cores.

I have also some done some weight estimations using CAD and Excel - before anything is veneered, glassed, glued or painted, she should be at 25lb. Not too bad I think.

Onwards!

Phil Cooke29/02/2016 09:22:32
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Very nice Andy and Shona. Good team work! With you cutting the panels in two have you still managed to include some washout in the tips? Does that play into the outer half only then?

Andy Meade29/02/2016 09:26:08
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Yup - my tiny brain couldn't cope with the trig to get it across the span, though I could have done it in CAD I guess. So yes - outer panels only, 3 degrees yes

Phil Cooke29/02/2016 09:33:52
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that's still fine - I only feather it in from 1/3 or 1/2 span anyway even on a stumpy model. Good work.

Steve Houghton29/02/2016 12:37:18
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I think we all need foam cutting lessons from Team Meade, which obviously depends on great marital bliss and trust! Great set of cores, Andy.

However, I think you should plan for a big model next time; never mind these 1/15 scale tiddlers!

Phil Cooke29/02/2016 12:43:53
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'Core, marital values' Steve...

I'll get me coat.

Andy Meade29/02/2016 12:52:28
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lol you two! Marital bliss?! What is this strange thing you talk of?

I'm no expert, but always willing for fellow modellers (and their spouses!) to come over for a wing cutting session. Dinner / BBQ thrown in too, if you are a PSS'er laugh The parts needed are minimal in cost (£10 tops), and the majority of the work is in the setup before each cut.

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