coneheadff Posted December 6, 2016 Share Posted December 6, 2016 Speechless!!! Quote Link to post Share on other sites
Army_Air_Force Posted December 19, 2016 Author Share Posted December 19, 2016 No progress of late. I've been laid up with Man-flu, and haven't had the energy or concentration to do any modelling. Quote Link to post Share on other sites
SBARC Posted December 21, 2016 Share Posted December 21, 2016 Get well Stephen.....I love you detailing on your B-17 so far. Quote Link to post Share on other sites
Army_Air_Force Posted February 11, 2017 Author Share Posted February 11, 2017 After a break of two months, I got back to doing something on the diorama. I spent this morning planning out the wrecking crane ( or most of it until I ran off the edge of the paper! ). Then this afternoon, I started building the assembly jig for the crane jib. The only original Kingman crane picture I have shows just the upper part of the jib, so the rest of the winch mechanism design and positioning was based on several other crane pictures I found on the net. Starting to cut the brass parts. Quote Link to post Share on other sites
Army_Air_Force Posted February 11, 2017 Author Share Posted February 11, 2017 The first side of the jib assembled. Next, with most of the solder joints cleaned up. Quote Link to post Share on other sites
Army_Air_Force Posted February 11, 2017 Author Share Posted February 11, 2017 The second jib side is now assembled. Both sides are cleaned up now and ready to begin the next stage which will be making some pulleys and assembling the sides. Quote Link to post Share on other sites
Andrew D. the Jolly Rogers guy Posted February 12, 2017 Share Posted February 12, 2017 ....CRIKEY!!!!!!!!!! Quote Link to post Share on other sites
Army_Air_Force Posted February 12, 2017 Author Share Posted February 12, 2017 Further work today. The pulley at the top end of the jib was made with a piece of brass tube and some washers. This was soldered to the ends of each jib half to hold them together. A second jig was made to aid the assembly of the halves. Four cross pieces were added in the centre third section of the jib, and then another set of pulleys added near the top end of the jib. Quote Link to post Share on other sites
Army_Air_Force Posted February 12, 2017 Author Share Posted February 12, 2017 I continued along the top of the jib, adding the rest of the cross members. Pulleys and a diagonal brace were added to the vertical support and the jib was then removed from the jig. Quote Link to post Share on other sites
Army_Air_Force Posted February 12, 2017 Author Share Posted February 12, 2017 The tubes joining the jib, which also form the bearing for the pulleys, were filed flush. The bottom cross pieces have also been added now. Diagonal bracing will be made from styrene. Quote Link to post Share on other sites
Army_Air_Force Posted February 12, 2017 Author Share Posted February 12, 2017 That lot took me all afternoon. Quote Link to post Share on other sites
Slartibartfast Posted February 13, 2017 Share Posted February 13, 2017 Man, there must have been a lot of weight added to the back of the tractor to keep it from nosing over. Quote Link to post Share on other sites
Army_Air_Force Posted February 13, 2017 Author Share Posted February 13, 2017 Cletracs were around 5.75 to 6 tons in weight. The cutting blade I read somewhere was 5,100 ponuds ( or 2.5 tons ). Allowing for the jib leverage, the tractor probably didn't need a huge amount of additional ballasting. This is of course a generic crane based around a Cletrac, so those cranes working at Kingman may have had a much higher chassis weight. Quote Link to post Share on other sites
Army_Air_Force Posted February 25, 2017 Author Share Posted February 25, 2017 Further progress on my Kingman scrapping diorama today, with more work on the Cletrac crane. An afternoon of cross-bracing the crane jib. I'm way too tight to spend money on buying Microstrip, so it was all just cut on my bandsaw and sanded smooth by hand. Quote Link to post Share on other sites
Army_Air_Force Posted February 25, 2017 Author Share Posted February 25, 2017 All the bracing was glued with cyano, but first, there was lots of cutting, sanding, and trial fitting repeatedly until they fit. Only two ended up being a bit short, both of which got used in other positions. The two sides were done first. Cross bracing on the top and bottom followed. Quote Link to post Share on other sites
Army_Air_Force Posted February 25, 2017 Author Share Posted February 25, 2017 Quote Link to post Share on other sites
Army_Air_Force Posted February 26, 2017 Author Share Posted February 26, 2017 I added a few detail pieces this morning and gave it a splash of primer to see what needs attention. It doesn't look too bad overall, just a little filling and sanding. Quote Link to post Share on other sites
Army_Air_Force Posted February 26, 2017 Author Share Posted February 26, 2017 The jib attachment on the Cletrac came next, with a brass tube and channel soldered together, then screwed and expoied into the bottom of the chassis. The pivot pin isn't permanently fixed at present. Just a little epoxy squeezed out that needs cleaning up. Quote Link to post Share on other sites
Army_Air_Force Posted February 26, 2017 Author Share Posted February 26, 2017 In my brass bits box, I found this geared shaft, and with the addition of some washers, made the cable drum for the crane winch. The jib in place, and the beginnings of the winch housing made and attached. Quote Link to post Share on other sites
Army_Air_Force Posted February 26, 2017 Author Share Posted February 26, 2017 The winch needs lots more work and details. More of the housing needs making, some access panels, and a control panel. Quote Link to post Share on other sites
scotthldr Posted February 28, 2017 Share Posted February 28, 2017 Friggin' awesome work there. What is it with this site at the moment with Shuttle launch pads, MH-60's all beyond the realms of modelling, this is art and mini engineering. Quote Link to post Share on other sites
Army_Air_Force Posted December 31, 2017 Author Share Posted December 31, 2017 I've made no progress on this since the last update. Other projects, work and my other hobbies have all got in the way, but it's not forgotten. My B-26 diorama was spread over three years, so it will get done, but don't hold your breath! Quote Link to post Share on other sites
Ikon Posted January 10, 2018 Share Posted January 10, 2018 Nice progress. I'll have to keep checking this from time to time. Quote Link to post Share on other sites
Army_Air_Force Posted January 27, 2019 Author Share Posted January 27, 2019 The project has been dormant since February 2017 until today. With some other projects out of the way, the B-17 box came back out. In order for the project to move on, I decided not to get too bogged down in fuselage details decided to push on. The rear fuselage was joined and the tail gun fairing opened up. Both tailplanes had previously had their elevators cut free, but they were joined, the false trailing edge filled with styrene and then filled. Quote Link to post Share on other sites
Army_Air_Force Posted January 27, 2019 Author Share Posted January 27, 2019 This lump is about the size of a 1/72 scale WW2 fighter! The waist section halves had distorted while sitting in the box, probably due to the formers and stringers glued inside. They were glued together and clamped, slightly squeezed to try and help return them to the correct shape. Quote Link to post Share on other sites
Recommended Posts
Join the conversation
You can post now and register later. If you have an account, sign in now to post with your account.