you don't need that big. You sheet metal is 48" wide. Make a 26F clone. Work to the middle and then turn the sheet around. If you run across some larger steel tubing, use the calculator to determine how big you can make it.
I love my 66" big wheel (Viagra), but almost never use more than 24" of his throat. That said, the deeper frame means that the angular deflection at the contact point is less. Irrelevant if you are using true radius anvils but significant with contact flats.
__________________
Kerry Pinkerton
|