Posted July 10, 201212 yr Just found this one on brickshelf. made by TechyMind more pictures on brickshelf setechnic Edited July 10, 201212 yr by bb15080
July 10, 201212 yr Its a very nice build and the orange does look nice. I wonder how he managed to implement "real vibration?"
July 10, 201212 yr Its a very nice build and the orange does look nice. I wonder how he managed to implement "real vibration?" It's an excentric system. If you have an old motor, the one which turns at 4000rpm, connect a triangular liftarm by one of its cruciform connection and run the motor at its full speed, you will quickly understand what an excentric is :)
July 10, 201212 yr Very nice model,I will need to try the vibration system out my self. Edited July 10, 201212 yr by Alasdair Ryan
July 10, 201212 yr It's an excentric system. If you have an old motor, the one which turns at 4000rpm, connect a triangular liftarm by one of its cruciform connection and run the motor at its full speed, you will quickly understand what an excentric is :) Hahaha I didn't know it was called that but I figured he was doing something similar -I just didn't see it in the pictures. Very nice model,I will need to try the vibration system out my self.
July 10, 201212 yr Hi! I see my compactor didn't escape Brickshelf hunters I'm pleased to see you like it so thank you a lot. Thanks to GuilliuG too who told me to come here. As you can see, the main point on this MOC was to implement vibration like real compactor. GuilliuG explained the vibration generator is made of old 9V motor and an excentric. In fact, 2 old motor are used to turn the excentric at full speed ; here is a picture : It's symetrical so those parts are encapsulated in the roller. The technic I used to build the roller has evolved from the first one in the picture posted by DLuder. I inserted under chain link a ring of pneumatic hose so the chain is well placed, does not move anymore and is quite round. My steering is also pendular thanks to HAMM technology of 3-point swivel joint. Here you can see how it works : http://www.hamm.eu/en/technologien/3k-knickgelenk/index.html I decided to use pneumatic actuator because it was easiest to implement due to perfect length and also because I had to mount them on ball joint. I used Sardo Autovalve I modified a little : I also added 2 real beacons and implemented an easy plug & play BB (I hate to ruin my finger to extract long pin/bush ). As you can see, I got inspiration from HAMM compactors, orange and dark bluish gray and black fit well together. This MOC is not perfect and some points could be improved but I consider it finished and I think it's not bad for my first compactor. Maybe I'll build another one later Feel free to ask eveything you got in mind. Video is uploading right now so I'll post it when it will be done. Thank you
July 10, 201212 yr There's one other compactor with real vibration, but it was a long time ago! Like your model (and like a mobile phone), it uses an offset mass to achieve the vibration.
July 10, 201212 yr Well, a very old one, so I'm the first one to integrated in a roller :) Here is the video :
July 11, 201212 yr @ TechyMind: Nice video animation! Thanks, I try to improve my level each tme I do a new one. It's better when I've got time to do it
July 12, 201212 yr Author Techymind nice video are you planning to make instructions for it I like this one a lot
July 12, 201212 yr Techymind nice video are you planning to make instructions for it I like this one a lot Thank you :) Unfortunately, I don't plan to make instructions for this one because I'm not fully satisfied with it (80% satisfaction ), some points could be better such as steering reactivity. Anyway, here you will find the S3D file I did for the roller. It's a good starting :) https://docs.google.com/open?id=0B4-TIQ4o53s5NVNNRjZuaUp4ZE0 I'm loofing forward to build another HAMM product : DV90 VO tandem roller It will be quite a challenge and far more complicated than the one I did.
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