Thirdwigg

I am watching this thread with interest as an upcoming project is being worked on that needs a rotor head. While many of these designs work, once you put power to them, there is a lot of flex that does not help the controls for the system as a whole. So far the most effective four blade systems that I have seen are this one from Efferman, and this one. Both function very well, but rely on this part, which takes away from the smoothness of the collective. I intend to find a solution. But until you can find a good way to connect the rotation of the rotor mast, and the swashplate rotation, your functions will be sloppy. I'll see if I can post my current work soon.

Very cool. I like this suspension. I find it works the best for trial trucks.

I like the coloring. Well done.

Still my favorite. Unimog 1600 from Aro-Kal.

Making some progress on The Queue. Also, the ATS is making good progress. It's going to be awesome. Tiffy, however is reminding me how difficult the Spitfire really was.

It's like a Segway for Technic figs.

I was thinking about suggesting my "floating differential" idea, but then I kept reading. I am glad you like it, and I hope it works well for this set up. I have been pleased with the way it functions.

As suggested by Jorgeopesi in this thread use this thread to post all trial trucks together for new people coming into Technic. Please post the year of completion, and a reference url. I'll get us started. My Kenworth T55, built in 2012. And my Mack Marble 5T, also built in 2012.

I like the bulldozer. Thanks for those two videos. I find the placement of the mLA on the the pickup odd. It seems weird how the mLA contracts to make the bed go up, rather than extend to make the bed go up. I wonder why TLG did that.

Thanks. It happened accidentally. I just kept placing parts, and its the shape I got.

Just a fun little trial truck this time. The trucks has four wheel linked pendular suspension, four-wheel drive, and steering. Oh, and there are instructions so you can build your own. Much more at Thirdwigg.com . Find the full gallery including instructions here, and the . I hope you all enjoy.

I like the bulldozer. I don't think Technic sets always need to have a bunch of PF parts, and lots of hard to find elements. It's nice to seem simple functions in a smaller package, in a machine we have not seen for a while.

I want this. I want this so much.

Call me crazy, but for some reason I decided to make instructions for my Spitfire. Check them out here.

Here is a small front axle for a live setup, including drive and steering. Here is a dynamic rear differential independent setup. Here is a portal axle with turntables setup that includes a limited slip differential. Finally, here is a portal axle independent set-up with MacPherson suspension.

From what I can tell, it looks like the ripper and blade lift function are done by a simple worm gear setup. On both, you can see a liftarm that connects to the function.

Correct.My understanding of complex movement is limited, but based on what I have learned, what I have recreated is just about as good as you can do at this scale. Regarding toe-in, I am still trying to figure out the movement of a rear five-link set up to compensate oversteer/understeer.

That's a helpful site. Thanks.

I only have geometry to work with, not spring rates, other than the two offered by LEGO.

That's not my design. Bump steer is mitigated as the steering arm is close to the 6.5 A-arm on the bottom. As the car goes around the corner, the outside will dive down. As this happens, the contact patch needs to remain consistent. This is done by the decreasing camber as rolls moves outside. The toe in is neutral at no depression. The increasing toe-in during depression allows the car to oversteer the outside wheel during body roll.

This topic is pertinent to a project I am currently working on. This first picture is a setup to try some of the above mentioned steering features. While it is clear TLG's ready made hubs do not allow for these features, a little work an a custom hub can accomplish much. This setup uses a short/long A-arms setup which allows for decreasing camber as suspension travel increases. There is a slight positive caster angle. Also the kingpin inclination is present so the steering axis is further to the outside of the tire. The scrub radius is still positive with a 44772 wheel, but its better than "stock" TLG options. Here you can see the system with some slight modifications placed in a chassis. You can see how the shock has been mounted, and how the steering is added. Again, I have decreasing camber as suspension travels, and increasing toe-in as suspension travels. Also I have positive caster. I have removed the angled kingpin which took away the improved scrub radius as seen in the first photo, as I could not get the steering lock I wanted the the top set-up. I hope this helps the conversation.

I have been trying for the last month. I can't seem to get it to work. If I get the bottom arm to the outside, and the top arm to the inside, I am unable to get the steering lock that I would like with wheel 44772. But it does work to get the King-Pin angle better. I do like how the two arms are a different length, so I can get a long/short A-arm setup.

The dozer looks interesting to me. I like the size from what I can tell. It's odd little has been posted about it.

I like the way this turned out, particularly the changes you made to the suspension. Very well done.

After building my Spitfire, I have found the strings work much better than a direct liftarm linkage. The strings with studs work very well for this application, as you can see in my WIP Typhoon here.