You know you've built a huge rocket, when ...

[Jimbodiah]

When even you space station uses asperagus staging.

[Devric]

When Kerbol goes into orbit around it.

Edited December 27, 2015 by Devric

[Jimbodiah]

When an E-class asteroid serves as your fuel tanks.

[Snarfster]

6 minutes ago, Jimbodiah said:

When an E-class asteroid serves as your fuel tanks.

That is not a Mun...

[Jimbodiah]

No mods to hollow out the Mun (yet)

[Mikki]

When you install while wintertime a fresh air tube from outside the catdoor to your liquid cooled Pc case.. because all the things you start seem to have this size half the time. 

[Whackjob]

When a launch takes two hours twenty minutes in real time to get to orbit.  

I did this.  Seriously.  I literally prepared, cooked, and ate an entire dinner, while my poor old laptop chugged away dealing with it.  If I recall correctly, I dropped the first set of boosters and staged to the next somewhere around the thirty five minute mark.

Not surprised at all the processor in it eventually burnt to a cinder.

[Aetharan]

@Whackjob I actually have that time-to-orbit beat by an hour, although it was because of the type of engines involved rather than the actual mass of the ship...  as in your example, I had plenty of time to cook and eat a hefty meal during the ascent, and like you, I went through it on an over-taxed laptop.  I haven't killed it yet, but I have made it beg for mercy.

[Atlas2342]

When:

1.  Even the mighty Kraken cowers in fear over it.......

2. Even a black whole can't swallow it...

Edited December 31, 2015 by Atlas2342

[Pseudon]

When your CPU can ignite a thermonuclear fusion reaction, despite using quantum processors.

[V7 Aerospace]

You know your rocket is massive when the nose cone is traveling at escape velocity. 

[cubinator]

When the max strut length provided by the game is not enough to go from your boosters to your core stage.

[RainDreamer]

When it is an SSTO even though you didn't plan it to be one.

[Wild Cobra]

When it's too large for the launch pad, and you have to destroy the runway launching it:

 

 

 

 

 

[Puggonaut]

When you can go from Kerbin to Mun in less than 40 mins ( Ok so i missed the Obit by 400,000m )

[MagicFireCaster]

When you navball reads orbit instead of surface 

[jonrd463]

When you've decided that SRBs are in order to help get it off the pad, so you add them. 8 of them. Each the size of a Saturn V first stage.

In Realism Overhaul.

Edited January 17, 2016 by jonrd463

[SR]

When you install RSS, then go to Pluto in 12 days, and return.

Then repeat a million times.

When you use Mammoths , sized up to 20 metres with tweakscale, for attitude control, and still turn slowly.

 

[steuben]

when the .craft file hits 10 meg

[KerbonautInTraining]

When the mass of the rocket makes the engines bend, fire onto each other, and explode

When it would tip the scale to its side when paired with 8 Saturn V's

The rocket I'm talking about is a 24,000t monstrosity I built for this thread.

[MatttheCzar]

When the payload is 10m across and 100m tall.

[pasukaru76]

When your next door neighbor can't hyperdrive in Elite because of mass lock from your KSP rocket.

[The Optimist]

When you don't even have to start the engine to get into space.

[Francois424]

When it crumbles on it's own weight right when the physics finish loading...  And no amount of struts can save it.

Back to the drawing board !

[Guz]