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Thanks for your comment! Actually there was an unsuccessful NXT&RC version which had more function but less reliability.

Maybe I am wrong, but there might be a version with differential gears.

I am glad that you like it. Thanks, that is the most frequently used gun in my MOCs.

Very impressive offroad vehicle! I really appreciate the superior mobility and robustness. And most of all, it is a successful offroad vehicle with differentials.

Thanks for the information! That is also an interesting forum which I missed before. Thanks for your comment!

Thanks for the comments! No, I didn't submit this for Lego Technic Challange as weapon is never a favorite topic for TLG. Bionicle is good target, but I don't have a single one currently.

NXT controlled robot tank which automatically searches for targets and attacks, while evades large obstacles. It can be manually switched between normal mode and night mode. Main components include: one NXT brick, three servo motors, one ultrasonic sensor, one light sensor and one touch sensor. All loading wheels have individual suspension. Two propulsion motors are located in front part and driving power is being transmitted to rear tracks via two Technic Universal Joint 3L. The front and rear parts are linked in a flexible and stable way. Programming platform is NXT-G still.

That's an amazing design! I once built a similiar MOC but not so successful like this one.

Thanks for your comment! If you have 8527 and the following parts, there should be no difficulty building the vehicle: X 14 X 94 X 8 X 8 X 4 X 2 (Dark grey) X 2 (Dark grey) X 2 (Dark grey) X 2 (Dark grey) Thanks for the detailed reply!

Great job! Another master piece with abundant and impressive functions, I especially like the design of head light.

Thanks for your comment! If the light source on ground is placed at proper height it should be detected and followed. The program includes three parallel threads: the first for light sensor rotation, the second for reading the grey value while light sensor rotates clockwise and store the max value, the third for taking the angle of max grey value and turning vehicle direction accordingly, then ultrasonic sensor will check whether the path is clear, if yes, vehicle goes in this direction for certain distance, if not, vehicle evades obstacle. All three threads are endless loops. Thanks for your comment! I just explained the work flow in previous reply, and it is implemented in NXT-G.

A lego NXT robot that searches for stronger light source and drives in that direction while evading obstacles. Main building parts include 1 X NXT brick, 1 X Light sensor, 1 X Ultrasonic sensor, 3 X Servo motors. And each loading wheel has individual suspension.

I wonder whether it could really float on water if larger wheels are applied. Really inspiring work! BTW,how does this vehcle turn? Would you please demonstrate the steering function?

That's bad news. Anyway, it belongs to best master piece in May, and I think many followers will be inspired by the gifted design.

Thanks for sharing! The instruction is professionally made. Does it mean that differentials for driving wheels is no good choice for truck trial (offroad testing)?

This is a very realistic MOC, especially the bridge and the link between bridge and vehicle. The topic is also funny and challenging. I hope it will appear in the list of Technic Challenge in May so that I can vote for it.

Thanks for your comments! PS: I don't believe that Lego would issue a millitary technic set, it's a clear policy of TLG.

The CAV joint is realized mainly by two lego elements: technic Steering Arm with 4 Ball Joints and technic Steering CV Joint. Thanks for your comments! You are right, the clutch gears are for mode switch between weapon tilt and fire function, it's manual. Thanks for your comments! I find that you had a MRLS MOC too :) Could you please provide a video link of it?

Please tell me what CAV joints stand for first. Maybe I have to learn ABC of LDD first. Well, both practice and luck are needed :)

Yes, according to my point of view, it works pretty well. Different resistance will result in different speed and torque.

Very impressive MOC, I like it! What is the reason you choose NXT instead of PF remote control elements? Control range?

Thanks for your comment! From a pure view of technic, weapon is not a bad topic, and I prefer something which TLG will never issue as a set. Thanks for your comment! Actually I always doubt whether it's really good to decorate a technic MOC with too many system bricks. Some of them look really brilliant, but in my mind they lose some sense of technic. Thanks for your comment! I am very glad that you like it. The trigger of fire action is a "Gear & Gear rack" structure, I hope the following images will answer your question: As gears rotate, the gear rack will be pushed to move horizontally. The prominent part of gear rack structure will push the triggers one by one.

Thanks for your comments, I have offered a link on youtube so that you can see the MRLS in action: (the same one a nice guy just inserted in his reply) Thanks for your comments and background introduction as well! The image you provided is absolutely correct, but the introduction on sinodefence is talking about some other MRL, it is sometimes confusing. I didn't find the specification of Type63 19X130mm MRLS on web either, but did find an interesting video of it. Thanks, now I know how to insert the video. Thanks for your comment, I used six differential gears in the MOC, four of them are for construction of automatic gear boxes, the idea was from TechnicBRICKS (http://technicbricks.blogspot.com/2009/11/week-techvideo-2009-48-automatic.html), it is worth trying.

Lego Type 63 Multiple Rocket Launcher System. All main function realized by remote control: vehicle propulsion, vehicle turning, weapon platform rotation, weapon tilt angle adjustment, weapon launch. Besides, automatic gear box is applied, 4X4 chassis with individual suspension, functional steering wheel, V6 engine connected to front driving wheels, both hood and doors can be opened, LED head lights.