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Playing in the Sandbox Group Build Sept 1, 2024 - Jn 1, 2025

1/25 scale XL Specialized HD 130 drop nose lowboy trailer


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Hey all 

  I guess it's been a while since I posted anything. I started work on a 1/25 scale XL Specialized HD130 drop nose lowboy trailer. I have this modelled up on Unigraphics NX16 as seen in other posts. I my add some 3D printed stuff we'll see as I go along.

  This one is completely from scratch, so here are some pictures of where I'm at. I have the two main beams, all the braces  and the gooseneck built. I used 5/8" 'I' beams for the main beams and 1/2" 'I' beams for the cross beams. I used 1/4" 'I' beams at the rear for the cross beams under the bucket well. I used 5/8" & 1/2" beams to make the rear frame.

20201231_190931.thumb.jpg.aa5be7d68f7d62c6c093673e75d5e9bd.jpgthis thing is 36" long with the Kenworth 925 it will be a lot longer with the Peterbilt 359.

  I made the gooseneck from 1/16" thick flat stock and 0.03" x 1/4" strip stock, also I made the pivot from 3/8" down to 3/16" telescopic plastic tube from Evergreen plastics. The pivot pins are made from 1/8" plastic tube with copper lock pins. The part of the gooseneck that attaches to the trailer is made from 1/16" thick plastic stock and various sizes of 'I' beams. King pin is a piece of 1/8" aluminum tube.

20201231_191240.thumb.jpg.0f4706c8b449640f26597aff0299be27.jpgthis is a side view of the gooseneck area. I have the trailer posed with my AMT Kenworth 925 for the gravel train for pictures only.this will be pared with my Revell Peterbilt 359 heavy haul tridem tractor.

20201231_190949.jpgthis view shows the rear of the trailer. Wheels & tires are from Moebius.

20201231_191218.jpgthis view is looking down at the gooseneck. I still have to make the front flip portion of the gooseneck, add all the lines, finish the lift cylinders, etc., etc....

20201231_190907.thumb.jpg.718e5889718bd04ee8c46483721e32f1.jpg

This has changed a little from my original TrailerKing concept, it's now a XL Specialized HD130 with s 28' well. I plan on making a three axle 'jeep' for this also and possibly a three axle 'stinger' too! Need to order more wheels & tires. Well back to it, be back soon with more updates.

Ron G

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Hey all 

  I have done some more work on the gooseneck. I added the front flip extension and all the pins.

20210101_183411.jpgthis view shows the front flip extension, flip extension upper pivot pins and lower lock pins.

20210101_183436.jpgthis view shows the main gooseneck pivot pin and how the gooseneck base attaches to the front of the trailer. 

20210101_183459.jpgthis view shows the front flip extension pivot and lock pins. You can just see the two king pins on the bottom side.

20210101_183538.jpgthis view shows the flip extension flipped up.

20210101_183558.jpganother view of the front flip extension in the flipped position.

20210101_183641.jpganother view of the front flip extension.

 Here are some more pictures of the trailer and all the individual parts.

20210101_183710.jpgthis view shows the drivers side main pivot pin & lock pin.

20210101_183734.jpgthis view shows the gooseneck in the down position and flip extension flipped up.

20210101_183756.jpgthis view shows the attachment pins for the gooseneck to the trailer. You can just see the locking cylinder.

20210101_183821.jpgthis is the whole gooseneck and the main pivot pins.

20210101_183845.jpgthis close up view shows the main pivot pins.

20210101_183906.jpgthis view shows the rear of the gooseneck and the locking cylinder.

20210101_183936.jpganother view of the gooseneck base.

20210101_183957.jpgfront view of the gooseneck base.

20210101_184016.jpgfront view of the trailer gooseneck attachment area.

20210101_184032.jpganother view of the gooseneck attachment area.

20210101_184054.jpgbottom view of the gooseneck attachment area.

  Here are some pictures of the rear of the trailer.

20210101_183150.jpgthis view shows the 1/4" 'H' beam cross braces.

20210101_183216.jpgthis view shows the transition from the 5/8" 'I' beam to the 1/2" 'I' beam to make the rear of the trailer frame.

20210101_183237.jpgthis view shows the excavator bucket well.

20210101_183257.jpgthis view shows the 1/2" 'I' beam cross braces.

20210101_183323.jpgthis view shows the gooseneck base and locking cylinder area.

  I started on the hydraulic lift cylinders, I have one done need to make the other one.

20210101_184117.jpgthis view shows one of the lift cylinders, I need to replace the brass tube with an aluminum one.

20210101_184135.jpgthis view shows the cylinder with a 1/24 scale (ruler) for comparison proposes.

  Here are some pictures of a 1/50 scale diecast Kenworth t880 truck, XL Specialized 130 HD trailer, jeep, stinger and Cat D10T2 dozer.

20210101_184157.jpgthis view shows the complete set up, you can see my scratch built trailer in the background, it's as long as the whole set up...lol

20210101_184212.jpgKenworth T880 tridem tractor.

20210101_184323.jpg3 axle custom jeep.

20210101_175214.jpgCat D10T2 dozer and 130 xl hd trailer.

20210101_184232.jpg3 axle custom nitrogen stinger. This is what I'm going to be trying to make in 1/25 scale. Well that's it for now be back with more soon.

Ron G 

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Hey all 

  Just a small update, I have the lift cylinders done now. I started on the outer trailer frame, deck boards, outriggers and "D" rings...etc.

20210102_192806.jpgthis view shows the main lift cylinders, and you can see the outer deck rail.

20210102_192647.jpgview looking down at the lift cylinders and beginnings of the deck. Thats it for now be back with more soon 

Ron G 

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Hey all 

  Got more done on the lowboy trailer.

20210104_162612.jpgside view showing the lowboy trailer and my Kenworth W925.

20210104_162750.jpgtop down view of the trailer.

20210104_163331.jpgthis view shows the rear of the trailer. The yellower white plastic is from the AMT lowboy trailer kit modified to fit.

20210104_163256.jpgside view of the rear area of the trailer showing the AMT parts added on.

20210104_163240.jpgrear view of the trailer showing the tail light area. Still need to do more work on this.

20210104_163447.jpgtop down view of the trailer bed. I ran out of 1/2" 'I' beams, need to go to the hobby store for more. It's getting there but still alot more needs to be done. Well that's it for now be back soon with more updates.

Ron G 

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Hey all 

 I got some more work done on the trailer. I've been working on the suspension, axles and brakes.

20210109_154954.jpgthis view shows the three axles sitting in place.

20210109_154833.jpgthis view shows the rear axle that I made from parts of the AMT lowboy kit and some plastic tube and card stock.

20210109_154906.jpghere is another view of the rear axle.

20210109_154933.jpgbottom view of the rear axle. I'm not really satisfied with this, so I think I'm going to replace it with som 3D printed ones I ordered from Shapways.

20210109_155034.jpgthis view shows the 3D printed axle set up.

20210109_155054.jpgthis view shows the actual 3D printed part. I'm really hoping that these work out ok. We'll see when they get here in a week.

 I have also been working on the hydraulic power pack set up. It will consist of a hydraulic tank (scratch built), a hydraulic pump (also scratch built) and a 3D printed 13hp Honda engine.

20210109_155013.jpgthis view shows the 3D printed Honda engine.

20200705_151242.jpgthisi s what I'm talking about.

20200705_151256.jpganother view of the power pack. Well that's it for now be back with more updates soon.

Ron G 

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  • CrankyCrafstman changed the title to 1/25 scale XL Specialized HD 130 drop nose lowboy trailer

Hey all 

  Thanks for the comments. I did a little work on my Revell Peterbilt 359 custom heavy haul tractor. I have the wheels/tires pretty much done, ready for paint. I temporarily put it together to see how it fits with the lowboy trailer.

20210110_153248.jpghere it is with my AMT D8H dozer. I think it looks assume together. What do you guys think?

20210110_153428.jpgclose up view of the tractor.

20210110_153511.jpgcloser view of the D8H dozer.

20210110_153617.jpgview looking down on the D8H and trailer. Well that's it for now be back soon.

Ron G 

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10 hours ago, CrankyCrafstman said:

Hey Jeff 

 Yeah, wait till I add the jeep and booster(stinger):D:construction:;)

Ron G 

And , I meant NO disrespect by the way, it just struck me as wow what a LOOOOOONNNGG unit it will be , and if it were for real, it would probably be restricted by permit here in B.C. as to where it could go, mostly due to our curvy roads...., but we do have tridem Low Beds, with tridrive tractors with Jeeps and boosters as well, just our tractors aren't any where near as long as your model tractor, I think that is where the length shows most... are you going for the 53 foot low bed? . and my hat is off and I bow to your incredible scratch building skills, my friend.... I am enjoying every update, and it is looking every bit the part...... 

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