What is the maximum efficient/cheapest early game rocket to get to an orbit around Kerbal?

[glorsh66]

What is the maximum efficient early game rocket to get to an orbit around kerbal? 

Fully early game - only thumper, swivel and reliant engines.

What is the best rocket design.  how much delta -v do I need.

What trajectory should I choose? 

 

[king of nowhere]

1 hour ago, glorsh66 said:

What is the maximum efficient early game rocket to get to an orbit around kerbal? 

Fully early game - only thumper, swivel and reliant engines.

What is the best rocket design.  how much delta -v do I need.

What trajectory should I choose? 

 

this one

mk1 command pod, 14 fuel tanks, swivel. It can reach high orbit it well piloted, and it can even be recovered whole. it only requires to unlock a single tech - well, this version also has a couple extrra science instruments, but you get the idea.

it's the simplest ssto, really.

 

for ascent path, start turning early, and hit 500 m/s with a 45° inclination. Stabilize around 30° until you get suborbital.

Edited May 27, 2022 by king of nowhere

[Streetwind]

15 hours ago, glorsh66 said:

how much delta -v do I need.

3400 m/s vacuum dV from surface to low Kerbin orbit. You probably want to add some margin, though.

 

Edited May 28, 2022 by Streetwind