Friznit

Correct. In case it helps, this is a summary (taken from Astronautix). With a bit of rounding and KSP Scaling, you basically only need 4 different MLV extended tanks as highlighted to cover all the variants. The numbers are the real world extensions to the standard tank sizes (not BDB Sarnus Scales). I'm not sure how increased structural strength translates in KSP game terms - is it strictly necessary or will it just create more parts for the sake of it? MS-IVB-1A and MS-IVB-2 are are near enough to the same length after scaling, and so are the MS-II-1A and MS-II-2 for that matter, so that just leaves the slightly shorter MS-II-1. Saturn MLV First Second Third Boosters MLV-V-1 MS-IC-1 (+6.1m); 5x F1A MS-II-1 (+1); 5x J-2 MS-IVB-1; 1x J-2 MLV-V-1/J-2T MS-IC-1 (+6.1m); 5x F1A MS-II-1 (+1); 5x J-2T MLV-V-1A MS-IC-1A (+6.1m); 6x F1 MS-II-1A (+4.7); 7x J2 MS-IVB-1A (+4.7); 1x J-2 MLV-V-2 MS-IC-1 (+6.1m); 5x F1A MS-II-1 (+1); 5x J-2 MS-IVB-2 (+5); 1x HG-3 MLV-V-3 MS-IC-1 (+6.1m); 5x F1A MS-II-2 (+4.7); 5x HG-3 MS-IVB-2 (+5); 1x HG-3 MLV-V-4(S) S-IC (5x F1) S-II S-IVB 4x UA1205 MLV-V-4(S)-A MS-IC-4(S)B (+8.5m); 5x F1 MS-II-1 (+1); 5x J-2 MS-IVB-1; 1x J-2 4x UA1205 MLV-V-4(S)-B MS-IC-1 (+6.1m); 5x F1A MS-II-1 (+1); 5x J-2T 4x UA1207 ELV MS-IC-4(S)B (+8.5m); 5x F1 MS-II-1A (+4.7); 7x J2 MS-IVB-1A (+4.7); 1x J-2 4x UA1207 Saturn V/4-260 S-IC (5x F1) MS-II-2 (+4.7); 5x HG-3 4x AJ-260X with addt'l fuel tanks Saturn V-24(L) MS-IC-1 (+6.1m); 5x F1A S-II MS-IVB-1A (+4.7); 1x J-2 4x MS-LRB-24(L);6.61m dia; 2x F1A

@Pappystein have a Saturn V-4-260. The NFLV nose cones go rather well. And for good measure, a Saturn V-24(L) And because it's you, I updated the MLV wiki page. I've not bothered to add every variation on the theme, but picked the ones that are markedly different for interest's sake. I'll add some more pics in a bit.

While you're about it can you check the node attach points on the flat bulkhead variants. I think they're off by some way if I recall correctly. I want to update the Saturn MLV page on the wiki a bit and make it clearer how to build the different stage variants. There's precious little info around but I'll give it a stab and you can let me know if it chimes with your understanding.

Do you have a reference pic / diagram / doc for that somewhere I can refer to?

https://github.com/friznit/Unofficial-BDB-Wiki/wiki/Saturn-MLV See also Saturn II and C series on there. It doesn't cover every single proposal ever but at least gives a flavour for some of the more significant variations.

Importing custom configs doesn't work yet. TWG is working on a fix.

Could you outline for those who don't do maths what the reasoning and implications are for this change, and how the engines now compare to stock/other mods? As I understand it, the 25% scaling is more balanced to real life engine instead of stock KSP (which tends to be overpowered). The impact is that upper stage engines will be significantly less powerful, so you will need more engines for a given payload and/or aim for a higher final orbits, given that low thrust will make circularising in low orbit more challenging.

Officially unofficial! It's also so I can legitimately claim ignorance for any glaring errors While it's not practicable to make a detailed build guide for every BDB rocket and variant (there are hundreds of them!), do please let me know if there are any specific improvements you would like to see, especially for those who are less familiar with the NASA rocket families. After all, it started with me taking notes on NASA rockets to learn how to put BDB parts together properly so a key principle is that it should be clear set of 'lego' instructions

I'm not going to do a build guide for every rocket variant! It's simply not practical. Besides, half the enjoyment is figuring out how to put the rockets together. The basic build guide should be enough to get you started in the right direction. If that's really not your thing, there are plenty of BDB craft files on KerbalX that you can download.

Are you asking for a build guide for the Saturn C-8?

I generally pick a variant with the most parts for the main build image, since in many cases you can then just remove bits for the other variants. Did you have anything specific in mind?

SSPXr parts are tweakscaled down slightly to match the diameter of the BDB MOL parts. They work together remarkably well.

Crew tubes and adjustable joints are SSPXr. Everything else is BDB. It all fits together rather well, I think, though it needs reCoupler to stop it being weird.

The wiki includes parts that are in the development branch. You can get it off github for testing but it changes often and could break save games, so use with caution.

The fix is actually a texture update in BDB itself, not the Colors mod so @CobaltWolf will need to include it in the next BDB release, which could be some time yet.

Obviously the screenshot we're talking about isn't mine but many of us use OrbitalPhoenix's guide as a starting point then tweak to taste.

It's not a BDB rocket and it's a bit of a kitbash of different parts. You can knock up an upper stage with a bit of tweakscale and the BDB RL10-B2 engine, otherwise reDirect has a DCSS model that you can use for the Delta IV upper stage. The interstage is just a procedural fairing interstage adaptor. If it's just looks you're after, the BDB SR-120 solid rocket motor looks the part.

You have to love the Atlas V. Such a pretty rocket.

Juno V-A would have used a Saturn 1 first stage with a whole Titan 1 ICBM. Bonkers. I found a picture so had to make one.

Saturn II INT-19 LDC-2 Centaur GT IUS

Before I make a MM patch file for GPP rescaled, is there a less manual way of scaling all the numbers by say, 2.6x? I'm assuming not and the manual approach is the simplest.

Awesome, super useful!

Your best bet is RD's own Karbonite Expansion. It has all the fusion drive goodness and of course works in concert with the other USI mod suite.