Temperus Maximus

if I remember correctly it was roughly twice the height of the VAB.

@DStaal the one I showed above made it to eeloo without any problems, but I added four more orions onto it, but unless your mission is going to be greater than 7.5k tons, 3 racks of 2500 nukes, 2 1000 nukes, and 1 500 rack should be plenty, though if your going for eve I would throw six orions on to be safe.

I built this trying to see how heavy a vessel the orion could put into orbit on it's own, this is the result. takes about a thousand of the biggest nuke pellets to get off the pad and into orbit, barely enough power to get off the pad, not to mention heavy enough to classify as an asteroid, enough reaction wheels to spin a small moon, and can build a base as big as you want wherever you want in the kerbol system, except maybe eve. Thanks for the mod Rover