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1/48th Boeing B-52H Stratofortress

Sanger Vacform

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#61 tomprobert

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Posted 06 April 2018 - 07:23 PM

Man that sucks. Trim the left side so it matches the top and then add strip to the right so they match. Reinforce from the inside for strength.

 

Sounds like a cunning plan - I'll keep you posted on my progress...

 

One of the reasons I would recommend using the matt white primer Tom, is not only can it be buffed up to a gloss or semi-gloss sheen where required, but it can also be locally weathered by rubbing in graphite and weathering powders to break up the uniformity. Much easier than spraying tints of white I find, especially for 1960s white Finningley Vulcans which attracted all sorts of brownish and greyish discolouration when subjected to the carried smoke and grime from what used to be industrial heartlands of Sheffield and Scunthorpe.

 

You might also like to look at this Flickr collection  which from about halfway down has a fairly comprehensive, hi-res B-52H walkaround, including flaps and flapwells, outriggers and their bays and other bits and pieces you could find useful..

 

Those pictures are fantastic - thanks for sharing. I hadn't realised that the out-rigger bays were zinc-chromate as presumed they'd be white like the main gear bays.

 

I'm amazed at how 'new' the pictures make the airframe look - it looks pristine and as if it's just rolled off of the production line and not having been in service for 50+ years.


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#62 Radders

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Posted 06 April 2018 - 09:49 PM

39442251470_565d771c38_z.jpg


Tom, you need to do it in this scheme... and I'm also sure that the photo is taken by a guy called Mike Freer, he and his son Stuart have a superb collection of aircraft photos that they've taken. Might be worth searching their names for more.
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#63 Chek

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Posted 07 April 2018 - 09:20 AM

That SIOP scheme was pretty standard on B-52s at Greenham Common air shows throughout the 70s.



#64 LSP_Paul

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Posted 26 May 2018 - 04:59 AM

Anything New Tom?   Been waiting for an update on this big BUFF =-) 



#65 tomprobert

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Posted 26 May 2018 - 04:34 PM

Anything New Tom? Been waiting for an update on this big BUFF =-)


Not much to report I'm afraid, Paul.

Being a teacher during term time means late nights marking books and not much modelling. Most of the spare time I do have I like to spend with my daughter and wife rather than being locked away upstairs and tinkering with plastic.

However, I had made a start on the internal sparring of the wing, but I've not touched the BUFF for a few weeks now. I've been tinkering with a couple of other projects too but nothing much of late.

I do have a week off now for half term, so am itching to get back at it!

All the best,

Tom
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#66 tomprobert

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Posted 22 June 2018 - 05:21 PM

Time for an update on the big BUFF  :)

 

I haven't had a lot of time for modelling of late due to work commitments, but the end of term reports are almost done so I've had a few free evenings to work on the internal spars in the wings. As you can imagine, such large pieces made from vacformed plastic don't have a great deal of strength, so it's essential to make a series of spars so the wing can support it's own weight. I've followed a similar structure to the real aircraft, and made two spars which run the length of the wing from double-thickness 1mm plastic card, supported by internal bracing to keep it all rigid:

 

42954387661_784a6791e5_z.jpg

 

I then repeated the process for the other wing, having used the previous spars as a pattern so the process was a lot quicker and also ensured both sides are identical:

 

42954386551_2bf22e419c_z.jpg

 

I've also been working on how to securely attach the wings to the fuselage so have made a series of slotted inserts from plastic card which either thick plastic card or perhaps steel spars will run through (via the fuselage) when the time comes to stick the wings on:

 

41143796380_948957dc98_z.jpg

 

The spars pictures are just temporary, but you get the idea:

 

29081589618_c772c5b5d9_z.jpg

 

I think the next task will be to make the out-rigger bays as well as the flap aperture detail that will not be accessible when the wings are joined. Stay tuned...

 

Tom

 


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#67 harvey

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Posted 22 June 2018 - 05:26 PM

Great work !!......Harv :popcorn:


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#68 Michael931080

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Posted 22 June 2018 - 05:33 PM

WOW - Nice Job and Great Idea on the internal work!


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#69 Shawn M

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Posted 22 June 2018 - 05:38 PM

nice engineering and well executed!


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#70 dora9

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Posted 22 June 2018 - 06:26 PM

When I thought that my Herc was big in 1/48!

 

Nice to see someone tackle such a big vac!

 

Cheers


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Andre Dorion

 

P1050144_zps9370ed62.jpg


#71 Gazzas

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Posted 22 June 2018 - 09:55 PM

Impressive structural work!  Such a massive project.


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#72 LSP_Kevin

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Posted 22 June 2018 - 10:07 PM

Very impressive, Tom! How did you work out the internal dimensions of the wing cavities, so that you could get the spars are the right height?

 

Kev



#73 Maxim

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Posted 22 June 2018 - 10:09 PM

Nice work! Have you made sure the wings will not be to rigid and the outriggers will touch the ground? Last thing you want is for the wings to look like the aircraft is in flight.


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#74 tomprobert

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Posted 23 June 2018 - 08:23 AM

Very impressive, Tom! How did you work out the internal dimensions of the wing cavities, so that you could get the spars are the right height?

 

Kev

 

I took a lot of time when sanding the wing halves down to ensure that both top and bottom halves were exactly the same depth. Therefore, it was relatively easy to measure the depth of the lower half wing root, and then to the same at the tip. With those measurements, it's just a case of doubling them and drawing the spars on the plastic card sheet before cutting them out. You then get a nicely tapered spar from root to tip which should, all being well, fit beautifully into a relatively straight wing like this. I usually add an extra mm to my measurements as it's easier to remove excess card than try to add it back later if you've under-measured!

 

Nice work! Have you made sure the wings will not be to rigid and the outriggers will touch the ground? Last thing you want is for the wings to look like the aircraft is in flight.

 

I'm not too worried about that to be honest. I was at the Fairford airshow last year and one of these was sitting there with one outrigger on the ground, and the other a good couple of feet off the deck. It was obviously unfuelled as it was rocking all over the place as the wind blew. Therefore, this is one of the few builds where I won't need to worry too much about not having the wings perfectly level, but you're right in the fact they'll need to droop to a certain degree when not in flight.

 

Tom


Edited by tomprobert, 23 June 2018 - 08:24 AM.

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