DLuders

Wow, you should consider entering this in the March 2011 Lego Technic Challenge for its great example of "linear movement"! Your analysis and animations are superb.

@ Benny3000: Welcome to Eurobricks! Your Road Grader is excellent. LDD Manager break down the individual, component parts for composite assemblies. For example, LDD Manager lists the standard Power Functions battery box as being 4 parts (the main battery holder, the sliding orange switch, and two sliding lids). The 48452cx1 "Technic Turntable Large Type 2, Complete Assembly with Black Outside Gear Section" is considered to be one part (even though LDD Manager lists both halves on the Parts List).

This is really neat! I created a PDF Parts List -- download it here via SkyDrive. Your Pallet Jack requires 178 parts and 67 steps to complete.

Benny3000 made a 601-piece Lego Technic Road Grader that is discussed in this Eurobricks post. The LXF File has 286 building steps, and the PDF Parts List is attached. Benny3000RoadGraderPartsList.pdf

I see that Siegfried (the Eurobricks Technic Forum moderator) split this out as a separate topic. If you want to build Benny3000's Road Grader, download the Lego Digital Designer (LDD) .lxf file (using the link in the original post above). Below is a link to the PDF Parts List that I made using LDD Manager; I converted the Excel export file to PDF using this free online converter. You will need 601 parts, and there are 286 steps in the LDD Building Instructions. SEE REPLACEMENT PARTS LIST A FEW POSTS DOWN IN THIS SAME TOPIC.

The layout is very efficient, and much smaller than the Doublebrick.com Hard Truck Contest "Basic 2-axle chassis instruction" version that I have tried. I would imagine that your mini Power Functions truck is quite fast. Are you able to post a video of it in motion?

Great set of pictures and explanations on your BricksMAL post, and welcome to Eurobricks! The Malaysian AFOLs are going to really like seeing this in person!

In this excellent TechnicBRICKS article, Conchas had noted that, starting with the 8297 Off Roader II set, the new differential was smaller than the older ones. Not all of the pictures in that article appear below (because they are big), but here are the words regarding the differential: "With the new Off Roader, there comes also one differential with a new design. This new design is also the 3rd generation of the LEGO TECHNIC differentials, as illustrated below:[/color] At center the first generation from 1980, on the right the 2nd generation from 1994 and on the left the new design (2008). Again the new differential is smaller than its predecessor (3L wide in opposition the former 4L version), however it uses inside the same 12 teeth bevel gears as before (only the 1st generation used different ones). Because it is thinner, both clutch gears (16 and 24 teeth) on the previous design have disappeared... which may mean that the new differentials can't be blocked anymore!? Instead, it got a 28 teeth bevel without clutch. The other extreme got no gear but its design with four inner tabs, suggests there is still an hope for a future clutch mechanism, despite it is incompatible with actual Driving Ring and Driving Ring Extension. Lets see if LEGO designers have new Driving Ring on the way for the future, to address this issue. The differential 28 teeth gear, has a few shorter teeth...because of a mystery slot... the wider (shallow) slot is for the present bevel gears but the deeper narrow slot is for something else... (it is too narrow for a linkarm). Because of the slot, the bevel gears only go in from one side and don't drop through! As bevels tend to slip quite easily, the shorter teeth can make this even worse... Lets wait and see what other users will report about this new part. The new design has other disadvantages, •It only interfaces it other bevel gears, which forces transmission to be perpendicular. •Can't be used with a chain. •Can't be used with standard or worm gears. With all these limitations, hopefully this won't be the only differential in use by the LEGO TECHNIC Designers, for the future... As AVCampos wrote in a comment to another post, lets hope "this new differential won't completely replace its predecessor, but rather supplement it where size matters". This new differential easily meshes with a 20 teeth double bevel, as in the present Off Roader design. In the central part of the differential, we can see a block that prevents internal bevel gears from bending, which used to make them slip and lead to breaking gears."

This is a very compact design! Your use of the old 4760c01 "Electric 9V Battery Box Small Complete Assembly" is perfect. How many motors does it use? Is there remote steering or manual steering?

@ flyz: Yes, you're correct, the 9:00 car is not a Lamborghini Countach but another Gallardo, but who designed that one? The blacked-out 8653 Enzo Ferrari 1:10 set (pictured in red below) has its building instructions available on the Lego Customer Service website (you may have to click the link twice to get past the Shop.Lego.com website). Here is a direct link to the 8653's PDF Building Instructions.

I always find it interesting to follow the design "thinking" behind Lego Technic MOCs, as they are being built as "Works In Progress". Someone said that building in Lego Technic is like chess -- one has to think 5 moves ahead. For the front radiator grill, you could consider using old-style Lego Technic Bricks on their sides, so that the studs face outwards in a "Studs Not On Top" (SNOT) arrangement, then affix rows of 2412 "Tile, Modified 1 x 2 Grille" pieces to the protruding studs:

@ GuiliuG: It's not a "fail". You and 22 others accepted the "challenge" of building, and you are all winners. Don't be discouraged. Designing and building Lego Technic models takes a while to gain experience. If it were "easy", everyone would soon lose interest. It takes courage to submit your MOCs for viewing and evaluation by worldwide Technic AFOLs!

Whoa, an X24 engine! Are you planning on making a Lego Digital Designer file for it, or a video like you did with your X16 engine below?

@ legolijntje: Here are the Building Instructions hyperlinks to the cars pictured above which I recognized: At the 9:00 position: Skyliner's Lamborghini Countach. On this post, he said that the PDF Building Instructions are available via e-mail if you contact him (via Eurobricks Private Message, or via the tiny e-mail address visible on sky-liner's Brickshelf picture images). A Lamborghini Gallardo set made by ???? At the 11:00 position: Lego Technic Supercar 8070 set. At the 1:00 position: Crowkillers' Lamborghini Murcielago. Photo-sequence building images on his Brickshelf gallery. At the 2:00 position: [i don't know what this is, or who created it. Can anybody help with the identification, and source of Building Instructions?] A blacked-out 8653 Enzo Ferrari 1:10 set. At the 4:00 position: Crowkillers' Lamborghini Gallardo (with PDF Building Instructions done by Blakbird). The black and red versions are shown on Crowkillers' Brickshelf gallery; the PDF instructions are for the red version. Not pictured in ouf's collection above -- Jurgen Krooshoop's "Little Devil" (available on Jurgen's Technic Corner):

On his Brickshelf gallery, papi1198 posted 19 pictures and a link to this of his Lego Technic Tractor-Trailer. It has Power Functions and LED lights to carry the WIDE LOAD day and night:

Speaking about Road Graders, "Benny3000" posted 51 pictures on his Brickshelf gallery and a of his SeTechnic Challenge entry. He provided a Lego Digital Designer (LDD) .lxf Building Instructions file to make it yourself; look for the link on the 2nd page of that Brickshelf gallery. Benny3000 wrote that it is "A LEGO Technic Grader made out of 600 pieces for the french LUG SeTechnic 9th challenge. All functions are manually operated via most part of the time worm gears. I took a little bit of inspiration into a Volvo G990 grader.It has basically 6 functions : + Steering with HOG on top of the cab (the steering wheel inside the cab is also working) + Fake V6 engine powered via two differentials on the rear wheels + Front blade operated via the black axle joiner (worm / 8t) + Middle blade lowering/raising (worm / 8t ) + Middle blade rotated (worm / turntable) + Rear ripper lowering/raising (worm / 8t)"

On his Brickshelf gallery, "ouf" posted a great collection of large-scale Lego Technic cars. The new 8070 Supercar set is there, along with many AFOLs' Supercars:

On his Brickshelf gallery, kiko97/ kiko9768 posted 15 pictures and a link to this of his Lego Technic airplane -- the "North American P-51 Mustang. Features aileron, elevator, rudder, steering and retractable landing gear. Fake V12. Cockpit and engine bonnet can be opened."

Another image on Nico71's Brickshelf gallery:

On his Brickshelf gallery, thirdwigg says that he loves "building truck trials. My MAN LE 4x4, with three speed linear transmission by two PF M, drives with PF XL, and [has] four wheel steering with PF M, pendular suspension, four PF channels for control; gears shift well." His shows the "Lego 3 Speed Linear Transmission with Power Functions changeover": On Flickr, thirdwigg wrote, "I started with my 3 speed transmission ( ) and created a way to have two power functions motors work to change the gears from one to the next. I wanted to use PF motors so I could control the system with a PF remote, and because I did not want to purchase an NXT system. Two problems were discovered when I created the transmission: first, I would need a system that would move the drive axle one stud at a time since the transmission required three gear placements at three stud intervals. Secondly, the changeover would have to be fast, so the gears would not grind. Making this changeover fast, and to stop precisely at one stud intervals was the challenge. The solution was to have two PF M motors powering a single axle that would rotate and translate that rotation into one stud movements. Each motor on either side is limited to one half rotation which will move the Pulley wheel ( http://www.bricklink.com/catalogItem.asp?P=4185 ) one half rotation. This moves the liftarm a total of two studs. By placing the differential in the center of the two motors, I can limit the movement of the pulley wheel to one quarter of a rotation. This in turn limits the liftarm movement to precisely one stud of movement. By implementing this design into a truck trial, I will be able to shift between three gears with a PF remote and one channel, shift both while the drive motor is running or not running, and without having a neutral gear. In addition, this system is stronger than changeover gears, and uses fewer gears reducing total system friction."

If the 8070 set has an "ugly butt" , have others tried to make it more "pretty"? If built according to the instructions, the A-model looks like this (from Blakbird's Brickshelf gallery): The B-model seems to have a more acceptable "rear end": So far, Meatman has this solution below to improve the looks of the A-model: It seems that since the 8070 does not actually DRIVE ITSELF, it could have simply had the new, small 88000 "Power Functions AAA Battery Box" (which costs $12.99 on Shop.Lego.com). There is enough power for the doors, rear wing, etc., and the battery box could have been hidden better. Perhaps The Lego Group (TLG) needed to keep the price of the 8070 set below a certain amount, since the larger 8881 "Power Functions Battery Box" costs a lot less ($6.99 on Shop.Lego.com). If this Lego Technic Supercar set was made for AFOLs (as Blakbird says), maybe TLG knows that many AFOLs will MODIFY the set with their own spare parts. What do you think?

@ Yoraish: If you want to go to the "dark side of The Force" , then Bill's Brickland (a Bricklink store in Florida, USA) has a Servo Integration Kit and RC motors that allow Lego Technic Liftarms to connect to commercially-available RC motors! The store is also known as Inanimate Reason -- you can find the kits in the "Custom Items" link at the left-center (dark blue) part of his Bricklink store webpage. The owner (Bill Shaw) is really into Lego-compatible Robotics. Here are the links to Kit 1 and Kit 2. Kit 1: "Bring the power of large, hobby scale servos to your robot or vehicle with this large servo adapter kit! What could you do with the brute force of 343 oz-in of torque like you can get from the Hitec HS-805BB Servo? It works equally well with large sized servos from Hitec. Our servo connection plate can adapt to Lego plastic axles or 3/16 steel axles (one 4L sized axle of each material is included. We include set screws for both types of axle. The plate also features integrated mount points for LEGO® liftarms and our custom aluminum liftarms. You can also attach liftarms or other Technic® compatible elements to the face of our proprietary horn. The horn adapter is designed to mount to Hitec large servos(or other brands who conform to their designs). Inventory of the complete kit: 1 large scale aluminum servo connection plate 1 large scale servo horn adapter 1 13 mm steel shaft (4L) 1 4L LEGO® axle 1 ea set screws for steel and LEGO® axles 4 pcs mounting hardware for plate 4 pcs mounting hardware for horn assembly instructions" Kit 2: "Imagine powering your robot or vehicle using an off-the-shelf hobby servo motor! It works equally well with most standard sized servos from Futaba and Hitec. Our servo connection plate can adapt to Lego plastic axles or 3/16 steel axles (one 4L sized axle of each material is included. We include set screws for both types of axle. The plate also features integrated mount points for LEGO® liftarms and our custom aluminum liftarms. You can also attach liftarms or other Technic® compatible elements to the face of our proprietary horn. The horn is designed to mount to either Futaba or Hitec (or other brands who conform to their designs). Our unique horn design gives you the option to use either size standard without having to worry about which horn you happen to have available. And here it is installed on a Hitec HS-645MG servo:" "Inventory of the complete kit: 1 aluminum servo connection plate 1 servo horn adapter 1 13 mm steel shaft (4L) 1 4L LEGO® axle 1 ea set screws for steel and LEGO® axles 4 pcs mounting hardware for plate 2 pcs mounting hardware for horn assembly instructions"

I like the suspension and the interesting exhaust pipe treatment! You would see an offroad buggy like this in the Baja 1000 desert race in Mexico.

@ GuiliuG: Why do you consider this to be a "failed MOC"? I think that it's good! It has all of the functions of a real Road Grader, and it even has a working V6 engine. If The Lego Group boxed this up and sold this as an official set, I bet you that they would sell many of them.

Here's the official (Lego.com) 10-second of the 8070 Lego Technic Supercar: