We race Mono1 and Hydro1 with 2860 motors with very similar KVs to that on 3s with CNC low blade area 1.4 pitch 36mm props Tenshock are the best reasonably priced ones, followed by TP. Generally we use 90A or 100A ESCs but as you have 2 motors helping eachother out, I think you would likely be fine with the same props on your 80A ESCs.
There is not much to be gained from loading up a 2860 with that KV much past that, maybe gain 5mph and lose half your run time. Not worth upgrading the ESCs for IMO.
If you put bigger ESCs in you could run 4s and see a worthwhile speed increase on those motors, but it would be SAWs only setup, with reduced reliability and good only for only a couple of passes per run, so have a think about whether that is a compromise you are willing to make, before buying new ESCs and batteries.
Personally I don't like the layout or the reputation of the well known 180A ESC, but I don't believe it is overkill per say. Except for my SAW boats that come with a risk assumed, I always pick an ESC rated for at least double the average current that I will be pulling, to keep temps down and reliability and efficiency up.
I don't know that boat so cant say for sure that they wont fit, but the zelos and proboat 36 run bigger diameter motors with different mounting hole spacing and shaft diameter to a 2860, so you will for sure need new couplings to fit them, and I expect that you would new motor mounts too, assuming that you need new mounts you will need to replace the stuffing tubes to align with the mounts, and you should probably upsize the flex shafts while you are at it to cope with the extra torque.
What is the hull made from? Tamiya TS paints are formulated for styrene, so if it is Plastic then they may be an OK choice, but I don't know anyone that has tried it. If it is a glass hull then definitely not.
Almost everyone I know uses car spray cans from the local motor parts shop, and those that don't use 2k car paints through a gun.
Paul Upton-Taylor, Greased Weasel Racing.
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