Our BB has 4 ballast weights, all 4 are behind the rear axle. I removed 3 of them.
They measure 6in. thick, 8in wide and 28in long. That makes a combined girth of 34in x 28in x 6in. They are steel plates welded together and have a 1/4in thick support frame.
I am able to lift only one end of these and I'd say 300 lbs each. What's your estimate?
I will be scrapping these so I can find out what they weigh.