Mod for huge engines?

[mateusviccari]

Does anybody know a good mod for huge engines? And I mean huge like in sea dragon huge, or bigger. I'm playing RSS with stock parts and smurff and even so I still have to make colossal ships, and my CPU doesn't really like clusters of 40 mainsails 

[DeadJohn]

Tweakscale.

[bigyihsuan]

Near Future Launch Vehicles has large, powerful engines, more powerful than mainsails. However they're more geared towards clustering many engines to get the required thrust.

SpaceY and SpaceY Extended fills a similar niche as NFLV, but instead of engine clusters it tends to use one big engine instead.

BDB also has some large engines and giant SRBs, especially with the Saturn parts.

[Second Hand Rocket Science]

Just now, bigyihsuan said:

SpaceY and SpaceY Extended fills a similar niche as NFLV, but instead of engine clusters it tends to use one big engine instead.

Totally agree. However, the issue I've found with SpaceY is that second stages are almost impossible. For some reason, even if you use the same engine as your first stage engine, you always get super low TWR and super high fuel consumption. I have no idea why, it must be a bug.