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AR-15 Animation (Page 2 of 2)
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Originally Posted By swOHmatt: Damn nice. The only thing I would add is clarification on how the gas system works. After the expanding gases enter the chamber between the bolt and the carrier, the carrier is forced rearward since the bolt cannot move forward. The carrier’s inertia then retracts the bolt. The gases then vent through the ports on the side of the carrier, once the gas rings on the bolt move to the opposite side of the 2 carrier vents. Some people mistakenly believe it’s a blast of gases against the key which drives the action. Edit: for a little more detail of above, the bolt carrier will start to move before the bullet leaves the barrel. It must so it has the inertia to operate. If it didn’t start moving before the bullet left the barrel, then the pressure would drop to near zero and the carrier/bolt/gas rings chamber (essentially a pneumatic cylinder) wouldn’t have enough pressure to operate. The cam track in the carrier has some movement before the cam touches the angled (rotation causing) part of the cam track. That straight section before the angle. This is a time delay function allowing the carrier to get the inertia needed to operate the action and the bullet to leave the barrel and pressure in the barrel/case brass to drop before the bolt starts to rotate. Don’t want to start bolt unlock before the pressure drops. Hey Matt, thanks again for clarification on how the gas system works. |
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Originally Posted By Arel_T_Dubue: Beautiful work. What program(s) did you use for the rendering and animation? Thank you :) The majority of it was created with Cinema 4D. Here's a little blog post about my process: https://www.mattrittman.com/how-an-ar15-works/ |
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Originally Posted By mrittman: Hey Matt, thanks again for clarification on how the gas system works. Any chance you could shoot me an email at (email edited out)? Email sent. PM kicking my ass. Doesn't like the length of the reply. The gas system detail video linked in your PM is perfect! |
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Originally Posted By mrittman: Thank you :) The majority of it was created with Cinema 4D. Here's a little blog post about my process: https://www.mattrittman.com/how-an-ar15-works/ Very impressive. Thanks. On rare occasions I will do a short animation / rendering in Inventor. I can appreciate the effort and attention to detail that went into this. |
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Originally Posted By Arel_T_Dubue: Very impressive. Thanks. On rare occasions I will do a short animation / rendering in Inventor. I can appreciate the effort and attention to detail that went into this. Thanks so much! Yeah these sort of mechanical animations have always intrigued me. I've heard great things about Inventor too. Might give it a go one of these days! |
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| Inventor is a great design and documentation tool, but I don’t know that the animation and rendering workflow is particularly good. I just can’t bring myself to learn 3ds Max, given how rarely I need to do animations, but for some reason I keep it installed and updated. I reckon it feels like I’m getting my money’s worth that way. |
AR-15 Animation (Page 2 of 2)
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