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1/24th scale Shackleton

Free flight rubber powered MR3

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Monz03/09/2014 20:20:00
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550 forum posts
31 photos

Finally got this underway now. Will probably be my winter free flight project.

I'm using the old plan for the control line version and started by drawing my modifications to the structure over it. I'm going with a box and former fuselage using 3/32 square for the box and a mix of 1/16 and 1/32 for the formers and then 3/32 x 1/16 (on edge) for the stringers.

This is going to be for rubber power. I have designed a simple little contra prop unit, but will first get it flying with four single props, then move to the contras.

Electriflier03/09/2014 20:32:49
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474 forum posts
1210 photos

Monz!,

Welcome back!

Just trying to get my head around the size of the Shackleton. Now, you've either got incredibly tiny feet or this thing is going to be a big model. I'm reckoning on approx 60" wingspan? - free flight? - Rubber ? Subscribed!

Regards

Roy

Monz03/09/2014 20:35:21
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550 forum posts
31 photos

Howdy Roy, cheers.

It's going to be around 64" span, so you're not far off. Building it will be easy, whether it flies or not will remain to be seen...

Glenn Stratton03/09/2014 21:11:52
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284 forum posts
15 photos

Another interesting project Monz, and of course it'll fly! Looking forward to seeing your solution for the contra props. If you don't mind me asking, what is your background, engineering?

Colin Leighfield03/09/2014 21:32:37
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6007 forum posts
2505 photos

That is very clever. It's certainly going to be light. Are you planning to put the rubber into the nacelles? At one time (when I was very young) there were a lot of ideas for rubber powered multis, even with the rubber in the fuselage and all kinds of drive mechanisms to transfer the power through the wings and to the nacelles.

I wouldn't know where to start with something like this, it's proper model building.

Andrew Price 203/09/2014 22:23:06
833 forum posts

Contra! Rubber! Behave yourself.

AlexJ03/09/2014 23:02:00
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108 forum posts
45 photos

Hi Monz,

This looks exiting! I enjoyed the big depron jet.

Do you mind telling me where you sourced your pins, they look like they wouldn't stab you when you put them in?

Regards

Alex

Monz05/09/2014 12:15:48
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550 forum posts
31 photos
Posted by Glenn Stratton on 03/09/2014 21:11:52:

Another interesting project Monz, and of course it'll fly! Looking forward to seeing your solution for the contra props. If you don't mind me asking, what is your background, engineering?

I don't really have a background, jack of all kinda thing.

Monz05/09/2014 12:18:23
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550 forum posts
31 photos
Posted by Colin Leighfield on 03/09/2014 21:32:37:

That is very clever. It's certainly going to be light. Are you planning to put the rubber into the nacelles? At one time (when I was very young) there were a lot of ideas for rubber powered multis, even with the rubber in the fuselage and all kinds of drive mechanisms to transfer the power through the wings and to the nacelles.

I wouldn't know where to start with something like this, it's proper model building.

I've had a look at loads of those old plans with drive trains and angled motors, simpler just to stick the motors in the nacelles.

Monz05/09/2014 12:20:22
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550 forum posts
31 photos
Posted by AlexJ on 03/09/2014 23:02:00:

Hi Monz,

This looks exiting! I enjoyed the big depron jet.

Do you mind telling me where you sourced your pins, they look like they wouldn't stab you when you put them in?

Regards

Alex

Hi Alex, these pins are from Balsa Cabin, they are fantastic, really thin and pointy and don't split the timber. And yes, the caps are great to prevent finger poke.

Get them here:

**LINK**

Monz05/09/2014 12:21:17
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550 forum posts
31 photos

Is there a way to add multiple quotes to posts on this forum?

AlexJ05/09/2014 14:41:27
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108 forum posts
45 photos

Thanks for the link Monz.

I look forward to the next instalment!

Alex

Monz05/09/2014 20:35:12
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550 forum posts
31 photos
Posted by AlexJ on 05/09/2014 14:41:27:

Thanks for the link Monz.

I look forward to the next instalment!

Alex

No probs Alex.

 

Thanks Tom.

In between gardening and work, I've done a bit more on Le Shack.

The formers were a bar steward. I seem to have made an error in my measuring when drawing the new box fuselage and where the formers were to be cut. That, and some of them are not quite the correct shape, so it's been a lot of eyeball, sand, eyeball, sand to get them correct. They're all from light 1/16, so although a pain, it didn't take too long. The sides and top are done now. I'm going to stringer the top and sides first, then add the bottom formers and stringer those. The flat bottom fus without formers is less prone to clumsy damage.

You can also see the beginnings of the wing saddle cutout as this model is going to have a removable wing, probably held on with dowels and rubber bands.

In the last pic, there is extra on the former, this will act as a tissue anchor as the rest of the stringers will be surface mounted on the formers. The formers front and back of the saddle cutout are also anchors where the stringers will be flush.

 

Edited By Pete B - Moderator on 05/09/2014 20:47:01

Monz05/09/2014 20:43:38
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550 forum posts
31 photos

Next was marking the stringer positions. The stringers are all 3/32 x 1/16 installed on edge.

I draw up a paper template, mark them out to TLAR and then transfer that to the timber. Then it's to work with one of my favourite little tools, the stringer notch sander thingamajig. I've marked 3/32 on this one as a depth gauge.

I've gotten as far as stringering the cockpit top for now. I'll carry on down the rest of the fuselage top and sides tomorrow after some bill paying work.

Edited By Pete B - Moderator on 05/09/2014 20:54:12

Pete B - Moderator05/09/2014 20:49:28
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Moderator
7680 forum posts
735 photos

Hey Monz, can you have a look at the user guide on posting images - I can't spend all evening fixing your posts!teeth 2

Pete

Monz05/09/2014 20:52:02
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550 forum posts
31 photos
Posted by Pete B - Moderator on 05/09/2014 20:49:28:

Hey Monz, can you have a look at the user guide on posting images - I can't spend all evening fixing your posts!teeth 2

Pete

Why is it so backwards that that whole bunch of steps need to be followed and not just recognise the IMG tag?

Pete B - Moderator05/09/2014 20:58:10
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Moderator
7680 forum posts
735 photos

Because it doesn't know any bettersmile - but it's not that difficult to follow the procedure that gets you a result...wink 2

Pete

Monz05/09/2014 21:00:00
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550 forum posts
31 photos
Posted by Pete B - Moderator on 05/09/2014 20:58:10:

Because it doesn't know any bettersmile - but it's not that difficult to follow the procedure that gets you a result...wink 2

Pete

You're right, it's just annoying...

Anyway, back to the Shack.

Dave Hopkin05/09/2014 21:12:26
3672 forum posts
294 photos

Looking good Monz, but I cant help thinking its screaming out for four of these.....

**LINK**

Monz05/09/2014 21:15:58
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550 forum posts
31 photos
Posted by Dave Hopkin on 05/09/2014 21:12:26:

Looking good Monz, but I cant help thinking its screaming out for four of these.....

**LINK**

Thanks.

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