I would love to see a Hercules upscale! Are you thinking MD two-state? I have seriously considered doing a 29/29 mm MD upscale, but I have other things that are higher on the build list. Please keep us updated on your progress.
I'd really like to do 3" using a modified pinnacle NC from Giant Leap and a 38 mm MMT in the sustainer. But the problem is that 3" ID airframes (LOC, Bluetube, etc) won't work well with the 3" OD of clear polycarbonate tubing. I may end up glassing a 3" OD mailing tube or upscaling even more to 4" OD / 3.9" ID just so everything will fit.BDB
What size airframe are you planing on up sizing the Magnum Payloader to ?