Rocket construction problem help! (root parts?)

[gr33n]

Hello ! Could you please solve my problem in the editor? (poor english, sorry, I try to do my best as I do not live in a british language country)
I made a rocket like this, from the top to the bottom :
* Command capsule pod
* Tri coupling accessory (to link the capsule above to three 2tourists capsules under )
* Three capsules for my tourists
* Thermal shield under each of the three capsules
* Ejection part under each shield
* Another tri coupling accessory to reduce from 3 to 1
* The rest of my stages under these...

Resume : commandpod - 1to3 - three tourist capsules with shield and eject -* 3to1 - fuel - engine ...

problem is at the * : only one of the three capsule stay attached on its bottom, even if all the parts are correctly placed. The two other tourists capsules are attached on their top but not on their bottom to the 3to1 part.
I think that two of the links [ ejection part - 3to1 tri coupling accessory ] do not weld together : i tried to use the root part accessory but didn't manage to improve things : i think that the root part button is the solution but could you tell me how to use it in my case?
Some ideas?

Another way to pose the problem : how to link parts which should link but do not link?

thanks !

[Brandon_Lee]

Why not place these tourist cabins inline? Theres ship lenght restriction, yes, but you're far from it.
Tip. Don't forget to place something at the bottom to shift yout CoM a bit backwards else you'll have big problems with insertion.
P.S. even if you manage to get this monstrocity to the orbit you're gonna have hard time bringing it back with this tricoupler anyway...

Upd: also note that just like irl general rule of thumb in KSP is "Build simple!". The moment you start joking with the game it starts joking back. But the choise is yours so if you want to find that out the hard way - you're welcome.

[Manwith Noname]

https://forum.kerbalspaceprogram.com/index.php?/topic/157131-13x-14x-recoupler-monocouple-your-bicouplers/

[Chibbity]

The craft building system works like a tree.

A part can have as many child parts as it wants but only one parent part.

Closed loops are not possible under this sytem except by cheating with struts.

[gr33n]

Thanks very much !!
I take good note of the "kiss" principle...
For the little story, i wanted to couple multiple tourist cabins in parrallel because when I aligned them with tankers and scientific bays, the whole thing tended to bend like a grass ...
But I will soon be able to get a big heat shield, and will be able to get a large cabin for all the crew members : problem solved soon.
Best regards from Reunion island !

[Brandon_Lee]

Ah, I see. Another way to avoid long bodies is to attach things radially. Use 3x symmetry setting and you'll be fine. Just place a tank and three tourist cabins around it, then add aerodynamic cones and maybe some struts. Use beams if you need to space parts out. But check your aerodynamics and CoM to avoid pitch/yaw. If you ie have a 0.3 ton part to the left and 30 ton part to the right, your rocket will be spinning like hell, and not only in atmosphere but in space too (this, of course, if you manage to lift it to the orbit somehow which is next to impossible).

[Manwith Noname]

Originally posted by gr33n:

I take good note of the "kiss" principle...

But I will soon be able to get a big heat shield, and will be able to get a large cabin for all the crew members : problem solved soon.

Just clarifying here, the link I posted above is for a mod that does exactly what you want. In short, it scans a craft for empty stack attach nodes that are next to each other and attaches them.

So, you can have your cake and eat it.

Edit:...and because you made a point about not being great with English, that saying means you can build your craft how you want and it will work, even though the stock game doesn't want to let you.

[gr33n]

Thank you very much dear fellow members !