The possiblility of a Mars Cycler in KSP

[boomerdog2000]

Are we also considering reusing the shuttle? Because that's even more fuel. And if we're not, that's even more space junk. on roughly the same path as your cycler...

[blubbermonkeys]

This was a challenge on the forums a while ago.

people managed to do it.

http://forum.kerbalspaceprogram.com/threads/49803-the-cyclers-difficulty-inane

[Osprey]

...and broke upon entering the Kerbin lithosphere.

Best.... euphemism... ever.

[FITorion]

Actually it is partly about the consumables, but not because the cycler is magically stocked by the space ice-cream faeries and tang sprites, but because the infrastructure to recycle consumables (hydroponic gardens etc.) would not need to be accelerated each trip. The same is true for the large extra mass required to make an effective centripetal habitation unit. Oh and active course management would be needed, in the Solarian and Kerbol systems.

In KSP one option for dealing with a cycler, and one needed to plan two or more simultaneous interplanetary expeditions (or even simultaneous flights to Mun and orbital launches), is keeping a future manoeuvre timeline on paper or spread sheet and note each time you are considering a physics warp as to whether it would cross one of those points. If it does, then that is the time to go out to the Space Centre, switch to the cycler (or other vehicle) and do the manoeuvre. As a general rule you might want to avoid having certain types of manoevres overlap (landing, aerobraking, rendezvous/docking, etc)

or just use Kerbal alarm clock.