sirslayer

Simple suspension and fake disk brakes. The suspension is home made from springs from writing pens and it only does 1 length of travel. I've done testing without vs with simple suspension and the simple suspension was way better and soon I will have suspension modules for other projects. The disc brake are just cosmetic and in the future I will have a simple working method..

AWD Dual Gear drive train with 1:1.66 output with all time positraction This RC chassis design employs a Dual Gear drive which the output of the motor have two (2 x) 20t bevel gears connected to two (2x ) 12t bevel gear inputs for maximum contact. I've noticed at high torque the drive shafts bends inward or outward depending on direction of travel which either it separates or grind down on the gear. The dual gear design acts like a see-saw so it makes contacts to the gears so going reverse or forward would be instantaneous for faster acceleration and crazy handling. No clicking from gears skipping will not occur using this design!!!! Positraction differential on the front and rear axles keeps it simple for an AWD system Since its a modular design you can copy the steering, motor/drive and suspension from this half of the frame to the other half of the frame for a dual motor/ 4 way steering system!! the underside if you noticed, my drive shaft hangs down like a real truck, Not only provides a realistic looking function , it also minimized the part count to save weight. Don't you hate it when you see a 4x4 Lego model that looks like a stack of bricks and its technic parts are hidden and its drive shaft don't look like a 4x4 in real life.. I do admire the complex nature and abilities of those models. I would soon discovery a balance of features and "looks" which seems important nowadays.

Wow, I just weighed some of my neighbor lepin bricks and they are more heavy for an example 2.5 vs 2.6 grams for a red color panel but again just a limited amount to measure isn't enough to make a conclusion also the Lego's bricks are smoother, feels and look better..but maybe lepin weight might have advantage for sturdiness and I dare to say , to be used for outdoor usage so you can save your Lego pieces for display as my neighbor suggested but who knows ??? . regardless I still feel my pure Lego brick design of my chassis is solid and soon i'll master the advantages of the difference in color beams, bricks and axles.. This a technic site and I would like to hear your discoveries with colors!!

Thank you @Leonardo da Bricki, unless you plan to make RC based models, your color preference is fine for displaying. Black color pieces did weigh lesser then Dark gray. I dont own any lime color and only have a few blue to see where they fall from lightest to heaviest. So all you afol break out your scales and start weighing your bricks.. !!! update , after weighing more black pieces, black is lighter then light gray and light gray is lighter then red. It seems that some shape red is lighter but the longer beams , Black is lighter. humm I wonder if done on purpose so then I can say that some shapes of bricks does weigh different in different color but I can't say red is lighter then so so color, But I can say that if you have multi colors bricks and you want to design a RC model its best to weigh each piece to see what color is most optimized for your model if weight is a concern. Why does color and shape varies in weight maybe some one knows.. So just to be safe I can't say Red is lighter then....... but I can say that my model uses the lighter weight colors!!!!!

This is my very first MOC of a semi-tractor mini chassis. This RC chassis took two months of intense testing and it just 94 pieces (including PF devices) to create the best mini chassis and its mostly a simple design. This chassis will host to many of my future projects and I also created a couple of youtube videos to show off its performance and durability. Version 2.0 chassis includes center differential and suspension. This chassis it includes the following, 1/10 scale Chassis is just 94 pieces with a to create a no gear slip no tire slip thought in my design. very strong frame and durability Its very modular and basic form is 1 frame = 2 halves so both axles will have the same suspension, drive, steering, etc, etc . (I experimented with all types axles and color) (ver 2.0 120 pieces) RC build in mind (it can be used with lego's, sbrick, buwizz and lepin or even a custom rc controller) 67.8 x 34r balloon tires (Balloon tires have the best traction for all types of surfaces like sand,rocks, asphalt and excel on smooth shiny surfaces) 1 lx motor and 1 servo (you can add more motor) 2 way reverse Ackermann Steering (can be upgraded to 4 way) AWD Dual Gear drive train with 1:1.66 output with all time positraction (to reduce gear slippage) Simple suspension (1 l travel and very stiff) (ver 2.0 2 link suspension per axle 3 l travel) Fake disc brakes Fake engine (optional) Center differential (ver 2.0 only) Short wheel base with excellent handling Off road and street car capabilities built into the chassis I have included some pics and videos and will add more. it still a work in progress!! My first video is to show the performance and handling and the second video is a 5 minute off road test to show its durability and to show that I can build a reliable RC chassis. 2.0 version 2.0 version side view Version 1.7 this video is to show performance and handling this 5 min video is to show durability and I can build a kick butt RC chassis !! And yes both videos are the same chassis!! Please add your comments and if you have any question, please feel free to ask about my MOC. This chassis was a really interesting project and discovered a few things about Lego's color of their beams and lift arms. I did a search on this forum about color and weight and none has came up so I guess ill be the first to post this.. I discovered that not all beams and lift arms weigh the same.. Same with pins and axles. I know there are friction and friction less axles and connectors but what I discovered beams and lift arms also weight differently, For example: This dark gray weighs 1.726 grams and Red of the same shape weighs 1.68 grams!!! That is a difference 0.114 grams!! yes that small but with 94 pieces it can add weight , The more I use the red Lego bricks colors, the more lighter the model !!! I have weigh a lot of different parts and color but I don't have all colors and shapes. So far the red color bricks are the lightest in my collections and that means using red bricks will adds more performance !!!! yes you can pat me on my back for this discovery!!

I like the shape of your model, i use to have a 72 dodge charger which it kind a looks like... @damjan97pl, I think a c pillar from a 1968 to 1972 dodge charger would look great on this build

Lego Technic 42068 "Tractor Chassis " This is the chassis to my "Tractor" frame and drive train. This is a picture of the chassis after many days of off road testing and adjustments. It survived the brutal test by taping a few important elements from the environment which included water/puddles . This is a different wheelbase from the 42068 and technically its my first true MOC that I will soon post.

Lego Technic 42068 "Tractor" WIP Using parts from this excellent technic 42068 and upgraded the tires to 68.7 mm, this is my version of the set 42075 b Fire Racer. I also installed 1 XL motor and battery case. Very sturdy shell compared to my Semi-Tractor cab and the "racing looks" and screaming front end just shows how this set is my favorite to mod!!! It sports a n advance 4 way steering (2 way ackermann ) and off road capability with an anti- no gear no tire slipping build in mind. I believe I have achieved this milestone top view

Another great Semi-Tractor!! Your model is easy on the eyes and it looks tough!! You can operate it at the outdoors since you have balloon tires, good luck

WoW!!!

Awesome!!!

Super good job, Natural your gifted with bricks

A real Cal-Fire truck from California, USA. Im thinking of doing a mod of this Semi-Tractor. I took the picture from Hesperia Days Parade.

Wow, Very simple design and very fun to play. I wonder how hard would it be to keep track of points. Very good job and you made my evening with full of ideas!!!

you may of answered our fix to world pollution!! great job and very simple!!

@marxpek do you need to do a 3 wheel design? a 4 wheel design might go faster since the third front wheel could be the issue . is it higher speeds you are reaching? how stable is your design at its tops speed? maybe over voltage your motors to 12 volts or higher to get higher rpms can do the trick.. if its a pure design then you need to lose weight

4 way Ackermann steering, just like the original set a center beam rocks back and forth to pull/push the steering rack!! look at the rear axles turning angle and a simple differential and drive shaft is installed, i got the U-joints at max angle for steering !!

I've ssen this youtube video from niciasno and his thoughts about using Lego's suspension. I think his videos series are very helpful!!

Lego Technic 42068 Semi-Tractor make over series WIP update. Ver. 5.2 Added following: Upgraded tires to 68.7 x 34R, these balloon tires are the next size up from default 56 size. I wanted to do a 4x4 off road Rc version of the Semi-Tractor and the default 56 size tires aren't tall enough for serious off road obstacles if you seen my previous videos on this thread !! Upgraded to 4 way Ackermann steering!! All 4 wheels turn !! (video coming soon)!! Upgrade suspension , yes there is a simple suspension with home made shocks absorber. Its small scale 1/10 from set 42068 (please if i'm wrong can someone correct me) Upgraded varies cosmetic looks and I also added a winch!!! A 4x4 on my 4x4 !! Tires and winch. Scale to chickens!! A farm version of the Semi-Tractor Sirslayer Farm's Chicken Hauler

Bravo!!! Bravo!!!

V-10 Mopar power!!! Great job and and It does look like the real deal!! I'm impressed!! Convertible would look good also!! https://www.google.com/search?q=dodge+viper+orange&rlz=1C1CHBD_enUS768US768&tbm=isch&tbo=u&source=univ&sa=X&ved=0ahUKEwj8qsyzjcDZAhVI12MKHTkODOIQsAQIKA&biw=1600&bih=807

Lego set 42068 Semi-Tractor "Dually" You can build this mod with the parts of your Lego set 42068 and add some customs parts afterward to fit your need. I install a fake 10 liters flat 6 (to fit scale) with exhaust and a trailer hitch.

thank you

Top View My favorite mod by Functional Technic and I like the fact it haves two water monitors!!! Wow

Lego Technic 42068 Semi-Tractor WIP. Using only the parts from this set, I was able to do a makeover on the cab. I believe this is my best looking cab I have done so far.