-6061 AL Rails (which wheels Sit in/both of them) = 6 lbs total
-6061 AL Front and Back Aluminum Rail = 1.6 lbs total
-Wood Board = 3 lbs (the board also has some cnc work undere it to lose weight.
–Baltic Birch @ .500 thick
-6061 Custom AL Wheel aka EWCP Wheel @ .5 lbs each
-Trannies weight in at 6.65 (cims are 2.5 lbs each)
–2 Stage Tranny
–Thank you Sean (1771)
-7075 AL Axles = .042 lbs each
The weight is impressive, especially given 4 motors and a 2 stage tranny. I’m liking the wood too. I’m guesssing the 2 stage transmissions are custom too, Have you potsed them on CD? If not please do, they look nice.
I hope your not stealing my teams plan for a bamboo robot…
It’s good to explore more natural means for robots. Wood is an excellent tool if implemented nicely and holds advantages over other materials like polycarb or aluminum. The battery looks awfully cozy in the back though. How is the weight distribution front-rear?
Nice to hear from you Andy. The crossbars are welded on and pretty much our frame will be welded as it has been for the past 4 years. You nailed the extrusion part right:
-one in the back and front
-one in the middle maybe two
The reason for the trannies in the back along with the battery is because if you look closely enough at the center wheel. There is an arc bolt pattern that I’ve CNC’d into the rail. (The add on plate is not shown, I forgot to add it on). We used that pattern this year and it works great (even with the slippery surface for a 1/16 drop). You can adjust the drop between a no drop or a 1/4 inch, 1/16th increments. So I put the trannies in the back with a direct drive. The battery is in the back because I don’t have anything to put on top.
It depends, If the game or design I was making was a forklift, the battery would be fine. But If it was something that extruded beyone the frame like an arm. I may move it a bit forward. It all depends.
Here’s a pic of A wood DriveTrain made my Team 418, just to show the use of wood: