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 Overall I really like the idea, and don't be surprised if I borrow some of these ideas for a future robot. - Greg Needel [more] |
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This is the first iteration of a sheet metal chassis.
All aluminum is 1/8".
It's 30x24".
Weighs 25.2 pounds
Older 4" AM Performance wheels.
Shifting transmissions geared for 13.8/5.2 FPS.
All chain is ran inside of the side rails.
The side rails have an open bottom.
The side rails are composed of 2 halves, allowing for easy removal of the sprockets without removing the transmission.
It still needs some work like adding a belly pan etc.
Discussion
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15-04-2013 19:31
pmangels17
Re: pic: Sheet Metal WCD
Wow looks great. However, I have two suggestions. The top CIM looks like it could warp the plate backwards if it isn't thick enough. Also, I know personally that chain inside tubes is typically problematic, though not impossible. I would recommend all gears if going inside the rails, and even then, you need large access holes. A better alternative would be to let the chain be outside the rain, so you can tension it with ease and access it more easily.
15-04-2013 19:56
theawesome1730
Re: pic: Sheet Metal WCD
I would be concerned about warping or torquing the frame where the wheels are. We had some minor issues with using 2x1 inch 1/8 wall aluminum tube on our WCD this season, so just a precautionary
15-04-2013 22:16
GMAdan
Re: pic: Sheet Metal WCD
Great job!
Though I agree with the comments above. I would be worried about warping the frame as well especially sustains a strong impact. I would think about gusseting some of the corners as well as maybe adding a mounting point for the gearboxes on that cross beam. That way not all the load is just on that side plate.
just my 2cents
16-04-2013 01:34
BJT
Re: pic: Sheet Metal WCD
You might want to look into what it takes to put bumpers on a wcd.
16-04-2013 07:42
theawesome1730
Re: pic: Sheet Metal WCD
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Originally Posted by BJT
You might want to look into what it takes to put bumpers on a wcd.
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16-04-2013 08:50
thefro526
Re: pic: Sheet Metal WCD
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Originally Posted by theawesome1730
Oh yes. Bumper mounting was a pain this year. It can be done with tube and a welder, but it will be more challenging with sheet metal
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16-04-2013 09:36
sdcantrell56
Re: pic: Sheet Metal WCD
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Originally Posted by theawesome1730
I would be concerned about warping or torquing the frame where the wheels are. We had some minor issues with using 2x1 inch 1/8 wall aluminum tube on our WCD this season, so just a precautionary
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16-04-2013 09:43
Akash Rastogi
Re: pic: Sheet Metal WCD
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Originally Posted by thefro526
On my previous team, we prototyped a 'sheet metal coast drive' in the off-season of 2011 and did sheet bumper mounts and they can be tricky. There is a bunch of information in this thread: http://www.chiefdelphi.com/forums/sh...ad.php?t=98808
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That drive also used 2x1 tubing and had 0 issues with the chassis as far as I know. Bellypan was integrated .090" pan into the front and back cross member. 10/10 would build again.
Overall, I must admit I enjoyed designing with 2x1 tube much more than with a pure sheetmetal frame. I felt that it simplified the design and was easier to have parts manufactured with a mix of tube+sheet.
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