Mark 5 Reactor

From the list of good reactor designs.

http://www.talonfiremage.pwp.blueyonder.co.uk/reactorplanner…7ps011111101110

Shorter run time than yours, but higher effective output (that is, average output over hot and cooldown periods) as well as higher efficiency and higher total EU/t. Your design has a mere 2.83 efficiency, and it's possible to get 2.6 with a Mark II design.

Design
It has
- higher output
- higher effective output
- higher efficiency
- lower cooldown, lower total time
It also uses less uranium cells.
It's not the best Mark V, since it's not very effective. (it's better to run Eff 3 mark II many times)

Make this, build a cooling system(great way to do so in this thread (yay, self-advertisment ftw!)),push button, make bacon from UU-matter you can make with it(you can do it if you try hard enough).

Quote from mutedcurmudgeon

I actually built this Mark-II reactor in about 10 minutes and it works much better than yours does.

http://www.talonfiremage.pwp.blueyonder.co.uk/reactorplanner…38a2nfg6ctroaps

http://www.talonfiremage.pwp.blueyonder.co.uk/reactorplanner…uo5iyui1x9m4hfk

Deleted two of your uranium cells, but moved the other four together for more efficiency. Exactly one cycle. ( I always try to make it exactly one cycle, saves on DS and coolant cells. )

Quote from NuclearStudent

http://www.talonfiremage.pwp.blueyonder.co.uk/reactorplanner…uo5iyui1x9m4hfk

Deleted two of your uranium cells, but moved the other four together for more efficiency. Exactly one cycle. ( I always try to make it exactly one cycle, saves on DS and coolant cells. )

Way cheaper and as effective, removed a chamber and got rid of the reactor platings. There is simply no reason to use IRP's on reactors like these, as they don't cool well and cost quite a bit. Try using less IHD's next time.
http://www.talonfiremage.pwp.blueyonder.co.uk/reactorplanner…gn70p9ys29slx6o

Back to the original post, Mark V are considered a joke because of their extremely short run times in comparison to their cool down periods.

I consider Mark V designs that melt parts to be sissies. If it takes the time to melt a part before going critical, it doesn't deserve the classification. Also, the only thing that higher class reactors can do better than lower is efficiency (more total power per fuel consumed). Therefore, I will restate your goals thusly:

Make it better without taking out the uranium cells.
Make it last longer.
Make sure the hull explodes before any parts have a chance to melt.
More effective Eu/t for more power in the same timespan.
More fuel efficiency, because 340k power more per fuel is worth waiting an extra 13 hours for!

So, this gem is created:
Mark V
Efficiency: 4.17
Effective Eu/t:52.08 @5sec on &91sec off

If you want better effective output, both Draco and Ragan's suggestions are superior, but looking at a mark V suggests you don't care about output.