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Showing results for tags 'Pneumatics'.
Found 6 results
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Hey everyone, I posted a version of my Unimog recently.. here are more pictures and another video. For full details of this project check out my mocpages http://mocpages.com/moc.php/407959 I am too lazy to put it all here I had lots of fun with this project, and I think it raises some "firsts" or at least breaks some ground in Technic building in new areas. First, I have no idea for certain, and will probably be proved wrong (which is fine by me) but this model may have the largest third party tires used for Technic models. They are nearly 6 inches tall! I have not seen any taller. Second, I haven't really seen any models being used for muddin'. We have truck trials and climbing competitions, but I have never really seen muddin competitions. This really is not possible with electrically powered models (b/c of the water), and that is why pneumatically powered models are so cool. They can open new doors to our hobby. I haven't seen a model go through more mud or water than this model (maybe I should post this to the records post ). The tires are nearly six inches tall, and with the water well surpassing the wheel wells in the video, this things can easily traverse through seven inches of water. Last.... which goes with the second... but I haven't really seen a lot of pneumatically powered MOCs used for trucks... period. Or climbers, etc. I have seen them used for cars, large cars, but not trucks. ALthough large LPE are not nearly as compact as motors, I think they open new doors as already discussed. Enjoy the pics and video... and remember to look at my page for further details. -
Hey everyone, I will post more details later..... but I just wanted to quickly share this. This is a model I have posted before, but now with tons of changes. Same pneumatic engine (Alex's @ LPE power) but geared down even more from my first version. Also, much larger tires (each weigh 175 grams....so, 700 grams for just wheels). More details to come, these aren't the only changes but a few. I primarily made the adjustments not for pulling power but for muddin, and climbin' -- but it looks like it can pull as well. All together the weight of the three vehicles in the video is 5700 grams..... but the vehicle in the middle has a brushed motor, and for those in the know... understand that is alot of resistance b/c brushed motors have internal brushed that make the motor very hard to turn manually. Pics and more videos to come! For more information on the first version... check out my signature block. Hopefully this second version operates better in the mud then the first
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UPDATED 13/2 2015: So my entry is finished, and I decided to redo the first post in the topic to make it easier to find info regarding the finished project. A little backstory regarding this MOC: Firstly, it has been designed specifically for this contest, over the last month-ish. I initially was going to make a more modern truck with the same pneumatic loop function, but then I thought it would be fun to make it more of a tribute to the brilliant B-model of the 8868, which I think many people have not had the pleasure to enjoy. When that had been decided, I had to figure out how to adapt the concept into studless form, while still keeping the scale and functions (and the rather ugly form factor) of the original model, as well as what other features to add to it. So, I ended up with this: It looks a bit messy, I know, nut hopefully the rest of the pictures along with the video will leave you with a good impression The features are as follows: Motorized (RC) functions: Rear wheel drive from a vertically mounted PF L-motor Steering with correct angles on both front axles from a PF Servo motor Dumpable bed from a PF M-motor Pneumatic loop for the loading action from dual small pumps driven by a PF M-motor Independent double wishbone suspension on both front axles Rear live axle suspension with leaf springs (flex axles) Dump bed flap opens via chains when bed is dumped Openable doors Adjustable seats A close up of the cab and left arm. As you can see, I have added doors The exposed tan 3L pins are unfortunately a necessity, as they function as a mechanical stop when the arms are lifted. ...that open! And behold: There is even a steering wheel and lots of instruments! The business end of things. The claw is based on the same principle as the original, but use of modern parts and some redesigning has left it stronger and more reliable. Uppermost position of the arms. It is actually dependent on the added weight of the load (for example a wheel) for the pneumatics to function in the right order. If there is nothing there, the arms will start to lower before the claw is fully opened. Another view Dumping bed in full tilt position. The chains on either side work to open the flap (?) at the back Here is a view of the valve used to toggle the cylinder that toggles the valve for the action. It is connected to the arms, so when the arms move up, the valve moves up, and then release air into the toggling cylinder, that then "reverses" the cycle, opening the claw and lowering the arms. As they move back down, this valve is then moved down, the toggling cylinder switches the action valve, the claw closes, the arms rise, and cycle repeats. Absolutely brilliant system! Here is a view down through the roof, where you can see the previously mentioned "toggle cylinder" and the "action valve". Also visible is the upside-down servo motor used for steering. Here is a view of the rear when the bed is raised. The M-motor in the middle is for the dump bed LA. The upside-down mounted M-motor to the left in the picture drives the dual pumps in the right of the picture. Lastly, here is a video showing off the functions in real life: Hope you like my model and hope to cash in on some of those nostalgia point Erik Leppen talked about -
Hi all, This is one of my first MOC's after a dark age. I'm really excited about the sbrick, and though it looks like serious competition, I thought I would still enter and complete my project as a personal goal. We have a 1966 Chevy C-10 Truck on air ride suspension. Loosely based on a real 'rat rod' truck. The model is 'bagged' on air ride pneumatic suspension. 4 motor functions: 1. L for Drive 2. M for Steering 3. M for Air Pump 4. M for Ride height via air switch. I worked really hard on trying to get fancy with a transmission, but they are either too big for the limited space I have or just aren't robust enough. In my pictures you can see that I tried various setups based on some notable Technic builder's models. Ultimately, they just didn't function as smoothly as I had hoped. I did have fun building them though. :-) With the frame on the ground, and it being a short cab, I didn't have room to implement the transmission with PTO to control the air pump (as originally planned) so I'm scrapping the transmission and just simplifying so I can make the deadline. First Transmission 4 speed, using a small LA to shift And here is the LA installed on top: The shifting was rough and the resulting transfer to the wheels was sketchy at best. I tried a two speed robust from Sariel and also one of Sheepo's 4 speed compact transmissions that uses rubber band tension. Sheepo's transmission is really clever. I tweaked it and had modest success but overall it was too complicated for my model.The real truck was supposed to be a '3 on the tree' so i might work that in after the competition. Here we have slfroden's linear gearbox. It uses a large LA and works very well. It's just huge. It can fit sideways in my model behind the cab, but the height is 4 studs too tall. Also getting it transferred to the drive train seemed overly complicated considering the placement. I think in a future moc, i'll start with the transmission and build the car around it. The LA is under the M motor. It's a WIP at the moment so keep that in mind. I do have a servo motor, but I JUST built lucio switch's awesome white 4WD truck. It used up my two XL motors also so I planned to use the L motor I have to drive this moc. It's probably not enough, but being as it is a 'cruiser' with air ride suspension, it certainly isn't built for performance. Stay tuned for more body work and a video. Thank you for any suggestions or comments. -
This is my first RC MOC. Built for small event in May 2014. Specs: 4x4 3 differentials Drive - XL motor Steering - M motor Pneumatic suspension on both axles Autovalve + compressor - M motor Dumping - M motor PF lights Work in progress: Design of the rear part was rushed, so there was room for improvements. Rear pneumatic suspension worked bad. Thanks to TGBDZ for helping with bodywork and dump bed. And for fun you can check it in action in 2 part video Part 1 Part 2 More pictures here
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I just built the Mercedes Arocs (set 42043) and it seems that the crane drops hard on the table or truck bed when I set the switches to lower it. Is this the expected behavior, or did I do something wrong in my assembly? If it is the expected behavior, are there any mods with instructions on how to remedy it? I'm wondering if swapping out the lift pneumatics for linear actuators might be viable? Also, if there are any other mods with instructions for the set I'd be very interested in those as well. Thanks so much for the help
