Quote:
Originally Posted by sparksandtabs
For between the side rails, instead of one huge piece of angle, use u channel or a cut piece of box tubing. This way for the inner piece you have support from both sides. Or just weld 2 pieces of inderstrial angle, so that you have the corner support. Or tig wil the inside corners of the channel.
Also I don't know if you plan on including it or if you even care, but for attaching the angle, just make tapped holes this way you dont need nuts. And 1/4-20 screws should suffice. If you do a 2 pattern, it should be fine: Doing a 3 hole pattern should stop rocking if you only have the support on on side: -John
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The bolts are all in the 3-bolt pattern you showed.
What I am showing is 675's chassis design for this year -- sans fasteners (if people really want to replicate it, they can improvise).
We have supports for the middle, but we don't use them. The strength given by the wheel axles and driveshafts (with bearing plates on the outside of the chassis securly fastened) is more than sufficient.
Trust me... It's a tested platform. This chassis design has seen 3 competitions without failure (and it's dished out and received some good hits).