Thanks - and yes we love these boats. Finding good drives? Depends .. as always.
We started right away with the Graupner GTX 500 and 650, plus one or two Aquacraft EP 1. After replacing the bruhed by BL motors up to 4000 kV, we finally ended up in broken gear wheels and crumbled flex drives, due to at least 30.000 rpm - that´s not what they´d been made for. So we did the standard research and are testing the Kyosho Dolphin, the Bullet Drive and some Asian drives currently with different setups.
To answer: as long as we use GTXs, they are easy to get. Coming to more solid ones, overseas purchase and huge shipping costs must be accepted. But we hope to convince one or two manufacturers to build some more stable drives. What we will test, is more voltage, bigger prop size and less RPM by vast torque outrunners, since - as mentioned - speed is not our main target.
btw why do I always (!) have to answer three questions before sending a post??? And yes of course I´m logged ind and confirmed..