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1/25 scale AMT Caterpillar D8H build


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Hey all 

  Here is my build of the 1/25 AMT D8H Caterpillar bulldozer. I'm basically building this OOB, but I'm adding a lot of details to make it look more realistic. Things like the tilt cylinder on the left side of the dozer with it's hydraulic lines. I remade the lift cylinders and added the hydraulic lines. I added a hydraulic manifold on the tube between the two lift cylinders that all the cylinders plumb to. From this I added the lines down to the hydraulic pump. I added bolt detail to both the intake and exhaust turbos. Added oil lines from the turbos to different areas on the block. I added the fuel injectors to the cylinder head and the fuel lines from the injectors to the injector pump. I will be adding more detail as I progress on the build. I found some 3D printed tracks from Shapways. I couldn't afford to get them in the fine detail resin (almost $200.00!!!) so I got them in the regular white plastic material and that process made the tracks not very movable. Let ne explain, they were printed assembled into individual side assemblies that if printed in the better material are movable. Mine are very stiff, I'm probably going to have to drill out all the pivot pins and replace them with scratch built plastic rods. All 42 per side?. Well here are some pictures for you to .ook at  

20200707_150819.jpgthis view shows the dozer partially put together for pictures only.

20200707_150751.jpgview looking from the rear forward.

20200707_150717.jpgview from the front down.

20200707_151039.jpgtop view.

20200707_151602.jpgview from the front of the blade.

20200719_145608.jpgthis view shows the 3D printed tracks and the modifications I made to the track slides at the bottom.

  I have more pictures of the engine, cylinders, and the detail I'm adding that I will post soon.

Ron G 

Edited by ShakyCraftsman
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Hey all 

  Here are some pictures of the D352 engine in the Cat Dozer.

20200624_173437.jpgthis view shows the kit parts and some that I modified. The brass wires are for the fuel lines.

20200624_174021.jpgthis view shows the exhaust manifold, the intake turbo and exhaust stack. The small aluminum bolts are from a guy that does stuff for formula 1 cars in different scales, but I forget his name.

20200624_174319.jpgthis shows the bolts added to the exhaust turbo.

20200624_174254.jpgthis view shows the exhaust turbo and exhaust stack mount.

20200624_174234.jpgthis view shows the exhaust stack in place.

20200624_174550.jpgthis view shows the fuel injection pump, the fittings and the fuel lines.

20200624_174525.jpganother view of the fuel injection pump.

20200624_174650.jpgthis view shows the fan belt and the bolts I added to the alternator.

20200624_175422.jpgthis view shows the intake manifold and the fuel injectors I added to the head.

20200624_175404.jpgcloser view of the fuel injectors.

20200624_175342.jpgthis view shows the fuel injection pump added to the engine.

20200624_175305.jpgI added this bracket/mount for the fan belt.

20200624_175232.jpgview showing the fan belt installed.

20200624_195016.jpgthis view shows the fuel lines added to the injectors.

20200624_194959.jpgthis view shows the fuel lines added to the fuel injector pump. 

  And here it is painted.

20200628_173443.jpgintake/exhaust side of engine.

20200628_173420.jpgthis view shows the wing nut I added to the air cleaner. And oil line from turbo to block.

20200628_173130.jpgfuel pump side of the engine.

20200628_173333.jpganother view of the fuel pump side of the engine. I added a line from the exhaust turbo to the oil gallery.

20200627_185921.jpgand here it is sitting in the Dozer. I  still need to give it a coat of gloss and then weather it. Thats it for now be back with more soon.

Ron G 

Edited by ShakyCraftsman
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   Ron,

          I really like all the detail you are adding to this dozer . You are taking this kit to another level .

Where did you get those awesome looking tracks? I need like four or five sets of those .

Will continue following this build thread .

 

  Be Well

    Gator

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Hey Gator 

  I found them on Shapways, I forget the guys name right now, but if you look for 1/25 scale Cat tracks I belive they will show up.  They are pricey $230.00 per set for them printed in the ultra detail resin. He won't print them in anything else now after I talked to him about how mine don't work. These are printed as a working assembly, that's why they are only available in the expensive resin, the other stuff wont work.

  I paid $120.00 for my set. But if you hold them out straight there stiff as a board, if you you try to bend/ move them they start to move but they break at the pins. They work really good in the proper material, it's just expensive. Maybe if you contact him you can work out a better price. It's not him but Shapways that sets the price.

Ron G 

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  • 3 weeks later...

Hey all 

  Here are some pictures of the Cat D8h I'm doing on Unigraphics NX11. It's only in a preliminary stage, still needs a lot of work to get it to be done. So here they are.

20200914_193516.jpgthis view shows the D8H on the 3 axle Loadking drop nose lowboy trailer being pulled by the lloonngg! Pete 359 heavy haul tractor.

20200914_193536.jpgsame view from the rear. Its only about 50% done.

Ron G 

Edited by ShakyCraftsman
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Hey guys 

  Found this CAD model on the internet,  it's  a Cat D11...BIG!!!... It's a pretty good model, but it needed some tweaking here and there. I redid the crapy tracks that were on it. And adjusted some of the dimensions. So here are some pictures.

20200916_192056.jpghere she is and she's a big mother! It does fit on the 4 axle trailer, just barely though.

20200916_192116.jpgside view.

20200916_192136.jpgview from the rear.

20200916_192033.jpgthis view shows the D11 next to the D8H, big difference! This thing actually has a model of the engine, although it's just sheet bodys not actual solids, so not sure if I could print it.

Ron G 

Edited by ShakyCraftsman
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Hey all 

  Here are some updated photos of the D8H.

20200922_165301.jpgfront isometric view.

20200922_165149.jpg

Rear isometric view.20200922_165223.jpgthis view shows the grill and all the Gazillion! holes I added to it.

20200922_165242.jpgthis view shows the operator area and some of the controls.

20200922_165204.jpgview of the D342 Cat engine.

20200922_165131.jpgside view of the engine and all tge bolt heads that I added to it.

20200922_165112.jpgother side of the engine. Well that's it for now be back with more soon.

Ron G 

Edited by ShakyCraftsman
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4 hours ago, ShakyCraftsman said:

Yeah I  wish I had it too, this is on my wifes work laptop, because she is furloughed home because of Covid. 

  UG NX 11 (Unigraphics) costs about $11,000.00 to $15,000.00 for a complete setup. Right  now thats beyond my means, why beyond...lol

Ron G 

I'm with you, Bro... I ain't got that kinda bread, either... That's what I paid for my truck!!!! ?

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Hey all 

  Here are some update photos of the D8H I'm doing on Unigraphics NX11.

20200928_143424.jpgfront isometric view. I now have the blade lift cylinders, blade tilt cylinder, air cleaner intake, batterys and battery box done. I also started on the R.O.P.S. (roll over protection system) it still needs the mounting brackets and hardware added.

20200928_143444.jpgrear isometric view. I also added the Cat logos and lettering to the sides, front and rear.

20200928_143404.jpgtop isometric view. I have to add the wire mesh protection to the R.O.P.S.

20200928_143301.jpgside view.

20200928_143321.jpgfront view.

20200928_143154.jpgrear view 

20200928_143343.jpgtop view.

20200928_143221.jpgside view of the engine and transmission.

20200928_143239.jpgleft side view of the engine.

20200928_143126.jpgright side view of the engine. This view also shows the 3 belt pulley system. That's  it for now be back with more updates soon.

Ron G 

Edited by ShakyCraftsman
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