The redneck rollor coaster didn’t work well because of striping gears and weight issues so I have given up on that for now. You really need to do that with power functions. I haven’t started work on anything else because I’ve been really busy lately but if you have an idea for something that I should build, please share and I will hopefully begin working on projects soon.
Been very busy with different things the past few weeks but have been able to work on this. the idea is that you drive forward and then slam on the brakes and the whole robot tip forward, the person almost hitting the ground, then it pops right back. my problem has been getting a good balance. This is also my first 4×4 vehicle so i can stop the front wheels to make it tip but sometimes that’s not enough so it has to be put into reverse quickly but sometimes that makes it tip forward too much and get stuck. So, basically, it needs work.
So I don’t have time to make a video for this robot because I am leaving for some different camps soon, I will be back in five weeks to make more robots and videos. I will still be available for questions and comments however.
So, yeah, I was bored and made this, and I’m defiantly not the first to make something like this.
UPDATE: building instructions are available on the building instructions page!
Double-tracked is my attempt at a robust tank using the rubber treads. I used the rubber treads instead of the hard plastic treads since they have much better grip (and I have no plastic treads). This worked very well. The only down side to this is that there was no suspension. Also, the gears connecting the front and back treads would often catch on the ground. Overall though, I think this could outperform almost any other Lego tank the same size with hard plastic treads.
You’ve probably noticed that I’ve changed the name from racing truck to just truck. this is because there was too much friction and it was too big that having a fast gear ration didn’t work well. So I did a 1:1 gear ration and focus on how controllable it was since the two motors were linked with a differential, so different speeds on the two motors made different gear ratios and speeds. It created smooth moment and power.
2 motors with one to one gear ration – 1 differential to add them together – drive train – differential – differential.
I enjoyed building this since this is my first build with differentials.
Nothing out of the ordinary for the program. It’s controlled by the PSP-NX-V3. When the program first starts, it finds the center for steering using the Hitechnic PID block. R1 turns the steering right, L1 turns it left, R2 returns it to center. The two joysticks control the two drive motors.
You can download it here.
2 Years ago, Yesterday (Yep, I’m a day late), I registered for this site…..I feel like I should say something sentimental.
(Note – WordPress only started calculating visitors in December 2012)
Top country is USA, Second is Russian Federation (seriously), Third is Germany.