lindr6

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  1. 5. Pneumatic Scissor Lift Cart Functions: Foot pedal pump action to extend the pneumatics, raising the table. Hand lever action to retract the pneumatics, lowering the table. Caster wheels (rears rotate 360 degrees) Discussion Topic And Many Pictures: HERE
  2. Unfortunately, the only other color I can go with based on my parts selection is yellow. I gave it a try and do not like the looks of it. I think I will stick with the all grey color scheme. Thanks for the comments!
  3. Here is the model with the last mechanism integrated into it. Overall, the mechanism works great in the model. I was worried the hand lever would not work well, but it works perfect. I was also pleased that gravity is enough to allow the table to lower. I did change the handle bar up a little to better accommodate the hand lever, and make it look a little better (in my opinion). For anyone following this thread will see, I also refactored the entire model as I found that I could optimize things a bit now that I had all the components together and saw how everything was working. By doing this, I was able to work out the thickness of the cart to where I wanted! Now for the pictures: If anybody has comments/suggestions to round out this project, please share, as I plan to shoot a video in the next two or three days.
  4. Here is my design for the mechanism for lowering the table via the pneumatic switch. The flex system cable will be routed up the handle bar and to a lever. I will iron that out once I integrate this mechanism. I decided to use spring to return the switch back to center and provide tension on the lever, as it seems a little more authentic than using a rubber band. Anyways, check out the pics: Next up is integrating this mechanism into the rest of the model. It should fit pretty easily as I already took my size/shape limitations into consideration.
  5. I now have the pump mechanism integrated into the build. I had a little issue with the hose fitting on the pump interfering with the pneumatic cylinder. To accommodate, I had to move the pump forward a bit to make it all work out, so not a huge deal. Anyways, here are the pics: Next up is to build the mechanism for the hand lever to operate the pneumatic switch.
  6. Here is the mechanism I came up with to depress the pneumatic pump with a "foot pedal". This was not easy to come up with a design that has enough stroke to full depress the pump via a rotational "foot pedal" action. Also, want to keep the design to 4(ish) studs in height. Width is also important so that it will fit between the cylinder and the scissor mechanism, which gives it only 2.5 studs width for most of the length of the pump. I'm still open to suggestions if anybody has a better solution to the problem. Another thing I had to consider is the strength of the mechanism, as when the cylinder is under load, it takes quite a bit of force to depress the pump. Anyways, here are the pics: Next up is to build this mechanism into the model!
  7. I believe I have the basics of the scissor mechanism working with the pneumatic cylinder. I went ahead and integrated it with the frame since it really needed to be part of it to accommodate the sliding action as the lift goes up and down. Luckily, there is still plenty of room for the other mechanisms, so hopefully I can make them all fit without too much issue. The space below the table is a little thicker than I would like, as I was hoping to keep all the mechanisms below the table down to four studs, and I currently have five. I'm going to leave it as for now and can work to reduce it if possible at the end. In the real thing, there is quite a bit of space used for the mechanisms below the table, so I really do not think I am far off. Here are some pics of the progress:
  8. Introduction: For this contest, I wanted to model a piece of hydraulic equipment that uses a manual pumping action to manipulate the hydraulics. This would give the Technic model a natural look and feel when using the manual hand pump to activate the pneumatic cylinder(s). After much thought and searching, I landed on a hydraulic scissor lift cart. This piece of equipment will require the three main components of the Technic pneumatics system, should be compact requiring interesting mechanisms utilizing the pneumatics, and has a added bonus of being something that is rarely modeled (are there any others?) hopefully making this contest entry slightly unique! Here are some pictures I will use for my inspiration: Plan: I plan to break this model into four distinct builds: General Frame, including caster wheels and handle bar for pushing cart. Scissor lift mechanism to raise and lower the cart table using a pneumatic cylinder. Foot pump mechanism that uses the manual pneumatic hand pump to cause the pneumatic cylinder to extract. Hand brake lever mechanism that moves the pneumatic switch to cause the pneumatic cylinder to retract (based on gravity, not air pressure). Anticipated Challenges: Keeping the mechanics of all the pneumatics into a low profile so that the cart table is a low as possible when all the way down. The sliding mechanism of the scissor lift. I am not sure how to best model this and keep everything stable and strong. Translating the vertical foot pump action to a horizontal stroke that is strong and long enough to depress the pneumatic hand pump while keeping it low profile. Operating the pneumatic switch located in the cart base via a lever on the handle bar. I am currently thinking that this might be good use of the flex system! Issue here will be having enough travel to successfully move the switch far enough. Also need the mechanism to include a spring to return the lever back to initial position. Build: Part 1: General Frame Here is my initial prototype to set a standard for size and to use as a base for the different mechanisms. Part 2: Scissor Mechanism Part 3: Foot Pump Mechanism Part 3: Hand Lever Mechanism Final Model: Video:
  9. 14. JCB Skid Steer & Front Loader A Model: JCB Skid Steer: Functions: - Mini Linear Actuator Raise/Lower Boom - Manual Bucket Dump - Working Fake 3 Cylinder Diesel Engine - Four Wheel Drive (All wheels turn when any one wheel turns) - Left/Right wheels can turn in same or opposite directions to turn - Quick Detach Bucket Attachment Dimensions: - Length: 25 studs - Width: 11 studs - Height: 16 studs - Box Volume: 4400 studs B Model: JCB Front Loader: Functions: - Mini Linear Actuator To Raise/Lower Bucket - Manual Bucket Dump - Working Fake Three Cylinder Engine - Rear Wheel Drive With Differential - Rear Perpendicular Suspension - Articulated Steering Dimensions: - Length: 35 Studs - Width: 12 Studs - Height: 16 Studs - Box Volume: 6720 Studs Discussion Topic Link: http://www.eurobrick...howtopic=120641 Video of A & B Model: A Model: HxWxL: 16x11x25=4400 Studs No bounding box picture as model was disassembled prior to the requirement. B Model: HxWxL: 16x12x35=6720 Studs
  10. Here is my TC9 Entry. It is skid steer and front loader based on the real thing by JCB. A Model JCB Skid Steer: Functions: - Mini Linear Actuator Raise/Lower Boom - Manual Bucket Dump - Working Fake 3 Cylinder Diesel Engine - Four Wheel Drive (All wheels turn when any one wheel turns) - Left/Right wheels can turn in same or opposite directions to turn - Quick Detach Bucket Attachment Dimensions: - Length: 25 studs - Width: 11 studs - Height: 16 studs - Box Volume: 4400 studs B Model: JCB Front Loader: Functions: - Mini Linear Actuator To Raise/Lower Bucket - Manual Bucket Dump - Working Fake Three Cylinder Engine - Rear Wheel Drive With Differential - Rear Perpendicular Suspension - Articulated Steering Dimensions: - Length: 35 Studs - Width: 12 Studs - Height: 16 Studs - Box Volume: 6720 Studs Video: Parts left from A Model after building B Model:
  11. What if the new IP car had some sort of new pneumatic 2.0 part that simulates disc brakes and/or a clutch. A new pneumatic part like this would likely drive some demand, even if the price is high, and possibly earn the 'ultimate' name.
  12. 2:10 1:6 15:4 5:3 10:2 16:1