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2023 Group Build - AMT 1/32 W900 Aerodyne


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Had a go today. Piped up my brake chambers and added top rails to the chassis. Tried making the "motorcycle lamps" for the front fenders but I don't think they turned out so well. Jammed one behind a headlamp bezel and I'm not sure at all. They're a bit too big and clumsy looking. I need something more demure. 

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Edited by Rockford
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Decided the little quarter light windows on the cab lacked detail so I clamped a piece of aluminium against the inside to act as a backing piece and then fed a length of .75mm square strip into the front and bottom of the aperture. Looks better, I can silver this to give the frame of the window. 

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Then I decided to build a steering box and drop link to the axle. I used two pieces of sprue for the box, with some 2.5mm square on the top for the valve body. I added 0.9mm copper wire for the lower column with a little brass UJ made of 3/16 tube. I used 2.3mm plastic tube and slices of insulation off the wire to fab the rest. Looks ok. 

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2 hours ago, leafsprings said:

Very impressive work done on the modifications! These 1/32's were never intended to look this nice!

You're right, if you build this box stock it comes out a Picasso, but I'm trying to make it a Norman Rockwell. If only I were that good. 

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Did a little today. I got some ali tube to sleeve the mufflers on a couple of trucks. I'll use a decal later to simulate the perforations. Smoothed the quarter fenders, cut off the plastic top flap and replaced it with electrical tape. Also trimmed the rear axles I made from brass tube so that the drive axle hubs I made will sit properly in the wheel dishes. 

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Made shocks for the front axle as I did with the K100 but here I added a triangular bracket on the rail. In the eyes of shockers I used 0.5mm wire with the insulation left on to simulate the bushings. Adds visual interest. I could sit doing this all day. 

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Weather is horrendous here at the moment so none of the six projects awaiting paint are going anywhere. 

Edited by Rockford
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Truck is taking its shape, looks great with the body on.

Nice details you are adding to the front! 

You have small and delicate details, it will be interesting to see how you would manage the painting task.  Good job so far. 
 

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Thanks guys, as for the painting? This is a snap fit kit, I only have to bang on the table and everything pops off like the old Buckaroo toy, in fact I'm sick of picking pieces up every time I move it. I am a slave to the mock-up.  

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Fiddled around a bit this afternoon. Made a power steering reservoir and a fuel filter for the driver's side and a canister type oil filter and water filter for the passenger side. I'm using Twinsticks Garage's W900 for reference where possible. 

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Started building my Cummins, I'm not sure where it's going to go but it's just something I want to try. Put the start of the block together and separated the heads. My plan is to start at the narrowest point, which is the rocker boxes and build up layers as I work down the block to the crankcase. Might be a wasted effort but let's see. 

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I can tell you now... "poorly" 😜 

I can only try, I don't know why I'm so desperate to do it, maybe because I used to work on them here in GB and they were just in a different league to the domestic product. The first truck to break 70mph capability in the UK was powered by a Cummins. We had them in ERFs,Atkinsons and later, Seddon Atkinsons and they were flying machines [before speed limiters came in]. 

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Right, first effort has already been scrapped. 

Realised I was working in the wrong axis for the rocker boxes, which are so distinctive on a 14litre. I needed to be able to get the shape right, not an anonymous box. Found a piece of scrap the right depth, cut three, 10mmx6mm pieces. Then glued them together with a minimum of cement and filed the shape I needed. Having the 3 together provided a uniform profile. They separated easily once finished. 

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Then did the same with two layers of plastic sheet to form the rocker covers and then filed a taper on the top as per the original. After these were mounted I added more width to the block so I now have a ledge to fit the water rail to. Scored the cylinder head separation lines. Looks much better, let's see how things go from here. 

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Made progress on my Cummins today. Laid 0.8mm square strip along the top of the block with little pieces in between to simulate the ribs on the block. Then rubbed them down to reduce how much they stuck out. 

Added the cam boxes to the side. Rounded off some 1mm square rod for them. Formed a timing case and cover, added the water pump mount in the front of the block. 

Built the crankcase out and tapered it in as it goes up to the cylinders. 

Bit rough on places and a bit one step forward two steps back, but overall, I'm pleased. 

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Thanks for the nice comments gents. Very gracious of you. 

Had some time spare today so on with the Cummins!!!! Here it is next to the AMT W900 1/25 block to give you some idea of size. 

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I finished the timing case and cover. Added bolt bosses around the edges and the bosses around the crank and auxiliary shafts. There's a little swarf in the cam thrust button in the middle. I'll sort that. 

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I built a compressor from sprue and a fuel pump from 2.5mm square rod. I added the stop solenoid, the fuel quantity button and the throttle shaft from shrapnel. 

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Shaping 2.5&3mm square rod I formed the charge air manifold. 

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On the other side, the oil cooler with the return hose to the block. 

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I know it's a bit rough and ready but it looks ok in the flesh. Waterpump, exhaust manifold and turbo next. Then bell housing and pulleys. 

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