Alright, I understand the concept now. Thank you sensei.
But: you are applying one negative tick per 10.4 sec (104 ticks? wiki says 1 tick = 0.1 sec, no?) to keep them desynchronized, because BC notices one-tick delay on an engine and ejects another bucket? Or is it because you are just preventing overheating?
What exactly I mean by the above; in the situation when the engines are placed under constant signal completely synchronised and then you turn sequencer on and it sends first 3 negative ticks (20.9 sec passes). Will it make them desynchronised? Or do you need to pick the engines up and then place them again under signal with sequencer on?
I had an idea about high volume bucket flow based on what my friend showed me some time ago. Engines in series <]<]<] keep the desynchronisation and I am nearly sure the power gets transmitted instantly through previous engines without waiting for their pulses. If this is correct you can power extraction pipe with up to 104 redstone engines (104 ticks?). I am not very familiar with BC so I don't know if heat generation works similarly in this situation. It might require more frequent negative ticks or something.
About your design: somewhat more than a week ago I explored it and then recreated from nothing to be sure about detailed mechanisms. Changes I introduced weren't really much about getting rid of RP, but rather about some other concepts. Although I am perfectly sure my first recreation of your design was working exactly in the same way as yours I might be wrong. Due to either of reasons there were flaws. Big ones - the ones you would call lethal to reactor. Bucket leaks in numerous places: bucket fillers' inlets, reactor inlets (double leak, still working on second one since buckets are getting shot in crazy surrealistic way) + infrequent leak by random buffer chest. Aside from that I got an impression your design supports only 4 bucket/tick flow instead of desired 6, because of presence of only 4 chests (1 chest = 1 redstone engine = 1 bucket/tick at inlet, you got 4 chests). There were other issues. If you like to design cooperatively, I am looking forward to discussing them with you, as I am aware I might have misdiagnosed some.
I welcome posting my reactor as continuation to your reactor design, but it would be appropriate to make a new 'co-design' thread, as many things changed and reactor is likely to have different specs and different list of mods involved (Btw, do you insist on RP? I would prefer not to use it unless absolutely necessary and unavoidable).