Jude Posted June 14 Posted June 14 (edited) Im trying to build US style truck cab with looks inspired from 42128 set. Model is now 99% finished Pics: https://photos.app.goo.gl/o33VzjsMRz2iTo688 Studio files: https://drive.google.com/drive/folders/1cpppaSlfmnBHR6XfDU4M85IFifqVlR4S?usp=drive_link Powered by 2 XL PF motors and PF servo for steering, gear ratios: 1st gear 5,25:1 2nd gear 1,12:1, manual gear change. Power source Buwizz 2.0 Front axle is copied from Madoca's work: https://rebrickable.com/mocs/MOC-25520/Madoca1977/dacoma-4x4-redux/#details, rear axle is from 42043 Automatically locking fifth wheel with manual release. Fully suspended. This is now working core model. How to make raised and lowered axle which would have drive that can be connected or disconnected? Impossible in this scale? Gearbox with 1 motor which would control 1) that axle function 2) fifth wheel 3) possibly outriggers This could also be good base start for just upscaled manual version of 42128 with suspension. Thoughts? Edited July 6 by Jude Quote
Jude Posted June 15 Author Posted June 15 (edited) Thanks :) I got one idea for disconnecting and connecting one of the rear axle's drive, but its very simply and manual: locking wheel hubs. I realized with this setup, in the middle axle, i can replace 5,5l axles with regular longer axles, thus giving me very simply manually operated drive connection just by pulling or pushing the axle pieces to differential. Will it stay connected while driving, i have no idea. I just bought 42154 set, so this project may take while to resume ;) And those wheelarches would look fitting to this truck if i change orange pieces to blue? Edit: Does someone have Studio file for Dacoma 4x4 front axle and/or 42043 rear bogey, that would make my work little bit faster? Edited June 15 by Jude Quote
Jude Posted June 22 Author Posted June 22 Model version 1.0 made in Studio, file available in first post. Next i add another axle to rear and start working on lifting/lowering one axle, but since i have saw in real life different axle setup on trucks, some have the middle axle lifted/lowered and some have the last axle lifted lowered, my question is, in lego world does it make difference which of the axles is lifted/lowered? Mainly how does it affect turning radius? Quote
Timewhatistime Posted June 23 Posted June 23 As far as I know, Euclidean geometry holds in the LEGO world to the very same extend as in the rest of the world. Quote
Aleh Posted June 23 Posted June 23 Nice attempt, but the grill here is horizontal while in the initial truck it's vertical. Try to redesign the front end for the better similarity, imo. And the cab should be everal studs higher Quote
Jude Posted June 30 Author Posted June 30 On 6/23/2026 at 11:03 PM, Aleh said: Nice attempt, but the grill here is horizontal while in the initial truck it's vertical. Try to redesign the front end for the better similarity, imo. And the cab should be everal studs higher Thanks for advices and all other comments :) Yeah i agree with the cab, it must be atleast 2 studs higher, im just thinking should the bonnet stay on this height and should i just raise the windshield and roof or the whole cab assembly? I dont understand what you mean with that grille thing, do you mean just flipping the grille pieces 90 degrees or...? Today i made some progress with adding 4th axle and some minor changes to front. I try to update .io file ASAP. New pics in Google Pics album, including my workspace. Quote
Aleh Posted July 1 Posted July 1 (edited) 11 hours ago, Jude said: the whole cab assembly in my opinion yes 11 hours ago, Jude said: just flipping the grille pieces 90 degrees Yeap, try to play with this solution. This matches the previous fix with raising the whole cab And I'll let myself to put here link to my own similar MOC with even two examples Edited July 1 by Aleh Quote
Jude Posted July 6 Author Posted July 6 Thanks for tips. This project has been a 50/50 mix of cursing and fun, so i think for now i call it finished :D Digital model is done, only need to bricklink 10-20 parts for real model. No interior yet. There is space left for some more functions if returning to this model in future. I ended up raising the cab 1 stud. There is also now automatically locking fifth wheel with manual release and turntable for add-ons. Even if im not 100% satisfied with end result, (too complex initial plan) i guess i learned something here, atleast i got more efficient in Studio :) Quote
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