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#14
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Re: Enough buying talk. Let's hear about ghettofab!
So, heres 350's "ghettofab" entry.
That picture is of our 2004 ball collector (the drive train actually looks decent so it's not important) as it was at the BAE regional. Let me walk you through it part by part. String- see all that neon yellow stuff? thats string and yess it is holding the frame together. Hey, tape cant be used to hold things together so string worked great. It gave the ball collector some flex too. String 2- yes the white string going across the collectors sides is our "netting" PVC Grippers- those white PVC things on top used to be the 2X ball grippers from the 2X arm we had until thursday of BAE. They are there so that they stop the ball collector from going inside the corral, they were added 3 matches in. Held on with bolts and string. Wood- the frame pieces are wood, and the "L" brackets connecting them (where string isnt used) are metal. the metal and wood together looked terrible. Wood 2: see those thin pieces of wood along the botton? Yep, scrap wood we picked up in the wood shop before heading to cometition friday. Added so that the balls roll better when we want to get them out. Roller: the gray cylinder going across the front. A PVC pipe glued and bolted to the 2nd to last FP transmission gear (thanks to 121's great way to speed up the FP gearbox) with rubber stuff glued to the outside for grip. There is no axle, its held on to that little piece of scrap plywood (that is screwed onto the frame) using a 1/4 in bolt going through the end cap of the roller. Winch: see that big hole on the plywood deck behind the ball collector? Well you can barely make it out but thats a seat motor we are using to raise and lower this thing. It's not speed controlled so the thing comes down as a controlled crash. The seat motor axle is spare key for the 5/8ths shaft. Oh yes, its 5 strands of string interlocked that we used as our winch cable. And no, the seat motor isnt strong enough to lift the ball collector back up all the way. Pipe Insulation- spare stuff I have no idea where we got it but its used to cover the bolts holding the PVS grippers down and where the "winch cable" joins to the collector itself. Oh yeah, you cant see it here, but our 350 signs were made friday morning out on the loading dock with spray paint. No, the bot isnt painted at all. We dont have decorations except for all 20 or 30 of our license plate stickers. Surprisingly the collector held up the whole competition. Although in our last match the front 2 vertical wood pieces snapped, so the entire top side was flapping around and flexible. Thanks to this, the ball collector could expand and actually hold more balls. So who else can say their bot works better broken? <edit> sorry the picture is so small</edit> Last edited by Ryan Foley : 06-08-2012 at 23:46. |
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