How do you create RSS rockets without mods or tinker panel

Well tank volume aswell as engine performance are worse than irl to better suit the smaller stock system, so if you want to make realistic replicas that perform the same you need to resort to tinkering or mods

@SamTheFox I will try it then

perhaps you are doing the orbiting procedure incorrectly

you could also try building the titan-centaur that carried the voyager probes to infinity

@SamTheFox but even when copying NASA, by making something like a Saturn v, even when accurately scales and made, it will barley have enough to get into earth orbit, if not failing to do even that.

copy nasa’s ideas

and do more gravity assists