Learstang Posted July 17, 2012 Share Posted July 17, 2012 I am planning on doing a Grand Slam conversion for an Airfix Dambuster (it's on its way!). I have most of the Paragon conversion for it - nose blank, dorsal turret blank (not needed on the Dambuster), bomb bay inserts, etc. The one thing, the only thing I'm missing is the s***ing bomb itself! I'd actually built it and painted it but now have no idea if I still have it anywhere (much of my collection was lost in a semi-voluntary move from Houston, Texas). If any one could provide some good schematics, especially in 1/72nd scale, but if not I can always scale them up or down, I would be very grateful. I have some nice photographs, courtesy of the Intertubes, but no good schematics. With some good schematics, I don't think I'll have much difficulty scratchbuilding one. Thank you for any help! Best Regards, Jason Link to comment Share on other sites More sharing options...
dogsbody Posted July 18, 2012 Share Posted July 18, 2012 Got this: Link to comment Share on other sites More sharing options...
dogsbody Posted July 18, 2012 Share Posted July 18, 2012 Links: http://www.bismarck-class.dk/tirpitz/misce...oy/tallboy.html http://eodthor.com/en/pages/13/Deep_Penetration_Bombs.html Chris Link to comment Share on other sites More sharing options...
Learstang Posted July 18, 2012 Author Share Posted July 18, 2012 Links:http://www.bismarck-class.dk/tirpitz/misce...oy/tallboy.html http://eodthor.com/en/pages/13/Deep_Penetration_Bombs.html Chris Chris, thank you for the picture and the links. I'd seen that first link, but not the second one. This will help me greatly! Best Regards, Jason Link to comment Share on other sites More sharing options...
stevehnz Posted July 18, 2012 Share Posted July 18, 2012 I'd like to echo that to, those are great links Chris, especially the eodthor one, thats by far the best schematic of the TB & GS bombs I've seen & it will be a big help with a little detailing on the Airfix GS kit I picked up recently. Steve. Link to comment Share on other sites More sharing options...
exbrat Posted July 18, 2012 Share Posted July 18, 2012 Hey Jason it looks like my goading/harassement/encouragement/SUTB (delete as applicable) has done the trick,well done. How's the Lancaster coming on? Regards John (exbrat) Link to comment Share on other sites More sharing options...
Iain Wyllie Posted July 18, 2012 Share Posted July 18, 2012 There is a dimensioned German drawing of the Grand Slam bomb in both the Lancaster Datafile and the book 'Bombs Gone'. Link to comment Share on other sites More sharing options...
Troy Smith Posted July 18, 2012 Share Posted July 18, 2012 There is a dimensioned German drawing of the Grand Slam bomb in both the Lancaster Datafile and the book 'Bombs Gone'. Jason I think I have the Datafile, and I do have "Bombs Gone" book, let me know if you want the details? cheers T Link to comment Share on other sites More sharing options...
Learstang Posted July 18, 2012 Author Share Posted July 18, 2012 (edited) Hey Jason it looks like my goading/harassement/encouragement/SUTB (delete as applicable) has done the trick,well done. How's the Lancaster coming on?Regards John (exbrat) Not too badly, John; I really haven't done anything photo-worthy in the past few days. Right now I'm filling in some of the areas and waiting for the fillers to dry, so I can start sanding them. This Grand Slam version is on my to do list, but I definitely want to get this Mk.VI and my Manchester out of the way first. Thank you for the information, Iain, and yes Troy, I would like the details - thank you! Regards, Jason Edited July 18, 2012 by Learstang Link to comment Share on other sites More sharing options...
Iain Wyllie Posted July 18, 2012 Share Posted July 18, 2012 (edited) nt Edited August 5, 2014 by Iain Wyllie Link to comment Share on other sites More sharing options...
Troy Smith Posted July 18, 2012 Share Posted July 18, 2012 erm, at 12,000 lb, does that not make it a Tallboy? Jason, both books are not to hand, I'll do my best to check on them, but may not be until the weekend. Feel free to remind me:) cheers T Link to comment Share on other sites More sharing options...
Learstang Posted July 18, 2012 Author Share Posted July 18, 2012 erm, at 12,000 lb, does that not make it a Tallboy?Jason, both books are not to hand, I'll do my best to check on them, but may not be until the weekend. Feel free to remind me:) cheers T No problem, Troy; I have to remind myself to remind you, though. Iain, that is indeed the Tallboy - supposedly the Grand Slam was a direct upscaling of it, but I have my doubts that everything was upscaled the same. Regards, Jason Link to comment Share on other sites More sharing options...
Iain Wyllie Posted July 18, 2012 Share Posted July 18, 2012 erm, at 12,000 lb, does that not make it a Tallboy? Yes, it does, but as the bombs, apart from size, were identical in shape and proportion, I assumed that you would multiply the dimensions in the drawing by 1.21 in order to arrive at the correct dimensions for the components of the larger bomb. Link to comment Share on other sites More sharing options...
Learstang Posted July 18, 2012 Author Share Posted July 18, 2012 Yes, it does, but as the bombs, apart from size, were identical in shape and proportion, I assumed that you would multiply the dimensions in the drawing by 1.21 in order to arrive at the correct dimensions for the components of the larger bomb. I hadn't worked out the dimensional difference - so it's 1.21. That does help - thank you, Iain! Regards, Jason Link to comment Share on other sites More sharing options...
andygif290368 Posted April 14, 2014 Share Posted April 14, 2014 Sorry to dredge this one back up, but does anyone have a copy of the schematic mentioned above. I'm working on some 3d cad drawing of both the grand slam and tallboy bombs. All ready have the 1:144 scale ones up on shapeways. I just need to check some dimension of the rear flange and tail mounting ring. Link to comment Share on other sites More sharing options...
Learstang Posted April 15, 2014 Author Share Posted April 15, 2014 Sorry to dredge this one back up, but does anyone have a copy of the schematic mentioned above. I'm working on some 3d cad drawing of both the grand slam and tallboy bombs. All ready have the 1:144 scale ones up on shapeways. I just need to check some dimension of the rear flange and tail mounting ring. No problem, Andy! As a matter of fact it's quite timely, as I just went and bought the Hasegawa Grand Slam kit when I was finally able to find one at a decent price, and I've even done some work on it. I'll look at what I have on the bomb regarding drawings and see If I can't find something that might help you. Best Regards, Jason Link to comment Share on other sites More sharing options...
andygif290368 Posted April 15, 2014 Share Posted April 15, 2014 (edited) No problem, Andy! As a matter of fact it's quite timely, as I just went and bought the Hasegawa Grand Slam kit when I was finally able to find one at a decent price, and I've even done some work on it. I'll look at what I have on the bomb regarding drawings and see If I can't find something that might help you. Best Regards, Jason cheers jason, i have to thank you for the other golden nugget of information, i got from this thread, 1.21, found that a couple of weeks ago wrote it on my tallboy sketch and then promptly lost the link back here from google results. Then i joined Britmodeller for other modelling information reasons and found this thread again "score!!!" I've Just realised my detailed cad drawings are wrong, as i've reused the rear flange assembly from the tallboy to create the back end of the grand slam and thats why i'm after the rear flange dimensions as double check. a link to a blog on my cad drawings http://morningstarsmodellingmusings.blogspot.co.uk/2014/03/a-bigger-bang-for-your-buck.html Edited April 15, 2014 by andygif290368 Link to comment Share on other sites More sharing options...
andygif290368 Posted April 17, 2014 Share Posted April 17, 2014 It's not 100% finished still some fiddly bits to sort out and learn more bits of Autodesk Inventor at the same time Files can be found on here, it's been drawn up as 1:1(ish) https://grabcad.com/library/raf-22000lb-d-p-bomb-grand-slam-1 Link to comment Share on other sites More sharing options...
ludwig113 Posted April 17, 2014 Share Posted April 17, 2014 chaps not sure where you are but there is one at RAF hendon museum and one at brooklands. Link to comment Share on other sites More sharing options...
chaddy Posted April 17, 2014 Share Posted April 17, 2014 If you have the Haynes Workshop Manual for the Dam Busters, page 77 has fully dimensioned installation drawings for the Tallboy and the Grand Slam. Link to comment Share on other sites More sharing options...
andygif290368 Posted April 18, 2014 Share Posted April 18, 2014 Thanks will keep an eye out for a cheap 2nd hand copy of the Haynes manual. Someone sent me a link to the Lancaster data file, which was great but only had the same info i already had for the tallboy's. The 3d model is the right total length, right warhead diameter and length, its the right diameter over the fins, which has been good enough for printing up at 1:144. The profiles for the rear of warhead and fin aerofoils are a best guess. A friend asked me to produce a drawing set that could be used to make larger scale models from, that's why I'm now fussing about trying to get the fiddly bits right, the bits that no one ever see at my usual scale of operation!!! To get panel lines to show at my normal scale they need to be about 20mm wide at 1:1 to even stand a chance of showing up on a print, not so much of gap at that point more a yawning chasm. Link to comment Share on other sites More sharing options...
andygif290368 Posted April 23, 2014 Share Posted April 23, 2014 (edited) well lets chalk that one up to experience.... bought a copy of the haynes manual for the lancaster off of ebay and there's no pictures of a tallboy or grand slam bomb, let alone a fully dimensioned installation diagram on page 77. Ok, theres loads of other bomb configurations on page 77 but not the ones i'm interested in. Well give it a couple of weeks and it'll be being sold on ebay or amazon again. so not all haynes manuals are created equal, have now found the right manual and the example pages do offer some very nice info on the bombs in question. back to watching ebay for a cheap copy.... Edited April 23, 2014 by andygif290368 Link to comment Share on other sites More sharing options...
Learstang Posted April 24, 2014 Author Share Posted April 24, 2014 (edited) Andy, here's one you may very well have - it's the German schematic of the Tallboy. Best Regards, Jason P.S. Wow! I just had a butcher's at your 3-D printed bombs - very nice - looks like you don't need my (or any) schematics! Edited April 24, 2014 by Learstang Link to comment Share on other sites More sharing options...
Iain Wyllie Posted April 24, 2014 Share Posted April 24, 2014 (edited) Edited August 5, 2014 by Iain Wyllie Link to comment Share on other sites More sharing options...
chaddy Posted April 24, 2014 Share Posted April 24, 2014 (edited) well lets chalk that one up to experience.... bought a copy of the haynes manual for the lancaster off of ebay and there's no pictures of a tallboy or grand slam bomb, let alone a fully dimensioned installation diagram on page 77. Ok, theres loads of other bomb configurations on page 77 but not the ones i'm interested in. Well give it a couple of weeks and it'll be being sold on ebay or amazon again. so not all haynes manuals are created equal, have now found the right manual and the example pages do offer some very nice info on the bombs in question. back to watching ebay for a cheap copy.... I presume you didn't get the Dam Buster version ( the one I mentioned in my post) then? Edited April 24, 2014 by chaddy Link to comment Share on other sites More sharing options...
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