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Sheet Metal WCD

androb4

By: androb4
New: 15-04-2013 00:36
Updated: 15-04-2013 01:42
Views: 2031 times


Sheet Metal WCD

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.

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15-04-2013 19:31

pmangels17


Unread 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


Unread 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


Unread 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


Unread 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


Unread Re: pic: Sheet Metal WCD

Quote:
Originally Posted by BJT View Post
You might want to look into what it takes to put bumpers on a wcd.
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



16-04-2013 08:50

thefro526


Unread Re: pic: Sheet Metal WCD

Quote:
Originally Posted by theawesome1730 View Post
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
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



16-04-2013 09:36

sdcantrell56


Unread Re: pic: Sheet Metal WCD

Quote:
Originally Posted by theawesome1730 View Post
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
I'm curious what type of issues you ran into with 2"x 1" tube. Was it 6061-T6?



16-04-2013 09:43

Akash Rastogi


Unread Re: pic: Sheet Metal WCD

Quote:
Originally Posted by thefro526 View Post
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
We designed some very simple .090" bumper mounting brackets on 3929 based off of 2826's. They have simple 90* bends to form two tabs on the sides to rivet or bolt through. https://sphotos-b.xx.fbcdn.net/hphot...81089086_n.jpg

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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