Project LARGE [car]

[z3_2drive]

Hi everyone, have a good update. I abandoned my trial truck as it lost efficiency with many gears, and I have multiple WIP's on my desk, but at the moment i'm focused on my first large scale car, but it will be a fast RC, so no gearboxes or extra weight. This is mostly focused on performance..So far, I have done the rear axle and drivetrain. Special thanks to nicjasno, for making videos and pictures of his brilliant suspension ideas. I reverse engineered his rear multi-link suspension and reinforced it so it will stay together and work at high speed. This high speed will be possible with two buggy motors driving it from the 'slower' output, each powered by one of my rechargeable 10 volt batteries. Next I will figure out the front axle, most likely something from nicjasno again. One concern is the Remote...we really need a new remote, with proportional control (so I don't destroy my differentials) that has good response and maybe even radio control so I don't look like an idiot running after my MOCs! I realize a new remote/receiver would be expensive, but I'd pay for it because I'm annoyed by the poor response from train remote and the VERY low range of Infrared, especially outside. I know this is because Lego is an 'indoor toy' but some of us take playability to the next level, so maybe just release it as a separate power functions module? Here's pics and video BTW

video (better camera but I screwed up the focus experimenting with various formats and such also, sorry)

http://www.youtube.com/watch?v=YBpd_pYRSEs

[Boxerlego]

That is fast. Good luck on this. Keep it light and sturdy.

[z3_2drive]

thanks, feel free to post any ideas for a body if the chassis turns out good

[AndyCW]

Looks good. I am trying something similar, but am using smaller tires and less voltage.

I have previously tried direct drive 8070 tires, v2 ir rx, and 5292x2 motors @ 7.4 vdc. It was pretty fast, but could not drift and spin tires at will. This is why I scaled down. Your greater voltage may negate this shortcoming. Hope to see a chasis soon.

v/r

Andy

[z3_2drive]

Looks good. I am trying something similar, but am using smaller tires and less voltage.

I have previously tried direct drive 8070 tires, v2 ir rx, and 5292x2 motors @ 7.4 vdc. It was pretty fast, but could not drift and spin tires at will. This is why I scaled down. Your greater voltage may negate this shortcoming. Hope to see a chasis soon.

v/r

Andy

I've used two buggy motors and bit smaller scale(8070 wheels) but chassis and drive train was VERY simple, no diffs, just wheel on axle coming out of each buggy motor...drifted too much :D thats why I use this advanced suspension to hope for good handling and not randomly spinning out

[Sariel]

Remote...we really need a new remote, with proportional control (so I don't destroy my differentials) that has good response and maybe even radio control so I don't look like an idiot running after my MOCs!

What's wrong with the radio control remote with proportional control that was designed specifically for RC motors?

[Alasdair Ryan]

What's wrong with the radio control remote with proportional control that was designed specifically for RC motors?

I guess that would be too easy....

[z3_2drive]

What's wrong with the radio control remote with proportional control that was designed specifically for RC motors?

because- its rare and probably expensive, have heard of some units having connection problems, the unit itself is huge(I think a new design could probably be smaller) and you cant connect the new pf servo to the unit, and I heard the built-in steering output is not strong and ends up with terrible steering performance in a heavy vehicle. BTW its a perfect time to say this project has been scrapped and something new is in the making