timslegos

Looks like a great design, although are you sure it wont separate under load just like the old turntable? tim

Effe, would you mind sending the small turntable to shapeways too? it seems dramatically cheaper than the other methods of printing. tim

Wow that bodywork is superb! I cant wait to see the rest. tim

That is a very interesting way of shifting gears! Great implementation of the servo motor. tim

Effe, I love the turntable idea. How much would it cost to get printed? I would definitely be interested if it was cheap enough. EDIT: What would a studded version look like? Would that work too? tim

I think it would be better on the outside. If you could only power it through the center and you could not also run cables and hoses through the center. tim

The chassis looks great so far. For better picture embedded, you can upload your pictures to free sites like Brickshelf, Bricksafe, of Flickr. Then just copy the link to the picture and embed into your post. tim

Would you mind explaining how the clutch works? I am still trying to figure out the internals, to no avail. tim

Great Gearbox! Do you think the gears will bind when trying to change gears since they are not bevel gears? tim

Wow I am impressed with all the details you added in! I am especially interested with the adder setup you were describing. Would you mind explaining it a little more to me? tim

I am glad you made it in real life! If you were to get the cost down, I would love to buy one. Also, would you be able to a turntable with a locking feature like that on the same scale as the current turntable? That way there would be a strong turntable for smaller creations too. tim

Why dont you try gearing down the motor more? Harnessing the power of the buggy motor is truly a challenge! tim

Wow you are definitely a great chassis builder, but can you make a good body to match it? . tim

So many details in such a small package, well done! tim

Thats one great looking crane! Nice work. tim

In both Vimeo and Youtube, as soon as you hit publish, it is published to the world! No fees or cost involved at all! Then you can embed the link in your site to make it easy to watch. tim

I could not agree more with Paul. I got really into Lego technic around the age of 7 or 8. I remember building the technic flagships years ahead of the recommended ages. Specifically, the pneumatic backhoe was my first real large technic set. I had to build it twice, because the first time it did not work! When I was younger, technic taught me all about building strong frames, and bracing properly. More recently I have learned about caster and camber as well as the geometry involved in complex 4 link suspension. The latest principle I have learned is how automatic transmissions work. I have been experimenting with centripetally activated automatic transmissions, and I find them absolutely fascinating! Though I may have looked at a career in design or engineering had I not know about Lego, I believe Lego definitely has cemented my desire to continue building for the rest of my life! tim

Wow that was fast! Great looking truck too. tim

I too am building a trophy truck, though on a smaller scale. If you are going for both speed and torque, I would recommend a buggy motor(also what I am using). The high speed output means you can gear it down and get even more torque while keeping a relatively high speed. tim

That thing is going to be FAST! I cant wait to see it drive. tim

Wow, I have never seen such a filled out studless model! Thanks for the share. tim

the new cab looks great! Does the drive still work even with the heavy cab? tim

Hello, Today I present to you my rc Rock Crawler. This machine is almost two years in the making, and it has gone through many revisions over time. The crawler features: two buggy motors for propulsion two speed gearbox (remotely switched) independent front and rear steering linked pendular suspension The body is very similar to a trophy truck, though it is not based off any real life truck. Bodywork is not my favorite, so it took the longest! In order to go around the limits set by the pf recievers, the buggy motors are attached to switches that are then directly attached to the battery boxes. The servo motor shown is used to turn the switch, causing the truck to go forwards or backwards. I stole this clever design from efferman, so all credits got to him. The two speed gearbox takes advantage of both outputs on the buggy motors, with the low speed coming from the slower of the two motor outputs. Though it works well indoors, the high speed does not have enough power to work well outdoors. Below you can see the switching mechanism as well as the gearbox itself. The best part about the crawler is the two axles. Designing the axles was the most challenging part of the build, as I wanted to have a solid base for the rest of the model. In order to slow down the buggy motors, a lot of reduction occurs in the middle of the axle. The process was made significantly easier when I got the new portal axles from the 41999 BOSS Set. In this photo you can also see the turntables. With all the space taken up by the gears, it was difficult to fit in the steering. The linked pendular suspension was achieved by connected the two turntables via a differential. While one side goes up, the other goes down. This setup has the advantage of not needing linkages or suspension, as well as greater travel. Here is the video, with plenty of driving out in the snow! Follow me on facebook for the latest updates and photos! https://www.facebook.com/timslegos More HIGH RESOLUTION photos can be found here. http://www.brickshel...ry.cgi?f=538172 I would appreciate feedback, this is only my second studless creation . tim

Thanks again! Studless building does not come easy to me. tim

Keeping the steering from self destructing was definitely a challenge! The tires are so grippy that it was difficult to build a strong enough mechanism. tim