I too run mine off of 1 AC engine, but I went a slightly different approach. ( Pretty sure a single 8:1 won't meet the max speed requirement btw, so you probably do have something a little different. )
I have a multi-directional clutch set for 2 directions when power is on or off ( 0 and 15 ). Those go to either a 16:1 and 2:1 ( for 32:1 ) or straight in. This will run stages 1 and 4 together, or stages 2 and 3 together.
I originally built a 4 speed transmission similar to the above, with 8:1 and 2:1 paths as well, until I learned I didn't really need those. Woops. Yes, that one was getting pretty complicated, and could only run a single stage at a time.
Anyways, it takes something like 20 seconds for stage 1, 10 for 2 and 3, and stage 4 is around 30 seconds. I have a simple lever to swap between the 2 modes whenever they get clogged up or empty. It dumps into a diamond chest. I'm only processing the somewhat rarer stuff this way anyways. For the main line I have a hydro engine running a grinder pretty well. These 2 are currently far exceeding my demands for materials at the moment, especially thanks to the time it takes figuring out each new RoC build I do
I also have 2 magnetizers hooked up to an AC engine. Yes, it's quite slow, but it could provide me with enough magnetized cores for probably 20+ ac engines with just 1 core in each magnetizer. I too am not running the power conversion, so I don't need it to run any faster or better. ( PS: Does anyone know what the max charge for a shaft core is? Curious if I need to keep a closer eye on them, or if they still have a very long ways to go. )
I have a multi-directional clutch set for 2 directions when power is on or off ( 0 and 15 ). Those go to either a 16:1 and 2:1 ( for 32:1 ) or straight in. This will run stages 1 and 4 together, or stages 2 and 3 together.
I originally built a 4 speed transmission similar to the above, with 8:1 and 2:1 paths as well, until I learned I didn't really need those. Woops. Yes, that one was getting pretty complicated, and could only run a single stage at a time.
Anyways, it takes something like 20 seconds for stage 1, 10 for 2 and 3, and stage 4 is around 30 seconds. I have a simple lever to swap between the 2 modes whenever they get clogged up or empty. It dumps into a diamond chest. I'm only processing the somewhat rarer stuff this way anyways. For the main line I have a hydro engine running a grinder pretty well. These 2 are currently far exceeding my demands for materials at the moment, especially thanks to the time it takes figuring out each new RoC build I do
I also have 2 magnetizers hooked up to an AC engine. Yes, it's quite slow, but it could provide me with enough magnetized cores for probably 20+ ac engines with just 1 core in each magnetizer. I too am not running the power conversion, so I don't need it to run any faster or better. ( PS: Does anyone know what the max charge for a shaft core is? Curious if I need to keep a closer eye on them, or if they still have a very long ways to go. )