FRC Bridge Weight

[slijin]

Originally Posted by Rangel(kf7fdb)

Are you sure that it is 22lbs? I thought that it was supposed to be around ~16lbs.

This.

On another note, please use the search function to find this information in the future, rather than starting new threads.

Originally Posted by slijin

The video said 28" to 30", so assuming 29" is the tipping point, 26" is the effective tipping point (CoG of battery isn't at the end). Keeping in mind that the bridge rotates on the edges of the bump and not the exact center, subtract another two more inches to get 24". Two batteries are 27 lb. That gives 27 lbf * 24" * (1'/12") = 54 lbf-ft = 648 lbf-in.

However, because of the double hinge, it's not a perfect lever, so aim for a bit more than that.

(88"/2) - 2" = 42"; 648 lbf-in / 42 in = 15.4 lbf, so approx. 16 lbf to tip.