We are planning to restock on those motors in the future, and some additional windings and lengths. They aren't huge sellers, but we haven't been promoting them much either.
This means that Castle will sell some 1524-1527/1Y or some 1518-1520/1.5Y motors ? That would be "cool"
Inferno VE MMv3 NEU-CC 1515/1Y 4S "Flying machine"
1515/1.5Y 1500kv : more inductance so more controllability than the higher Kv 1515/1Y (perfect for 1:8 racing buggies 5-6S).
1518/1.5Y 1200Kv: same for 1:8 racing truggies
1520/1.5Y ~1050Kv : same for 1:8 racing truggies
1524/1.5Y or 1Y : 6x6x6 Monster Trucks or heavy crawler
1717/1.5Y ~1050Kv : XXXXL Monster trucks on 6S ?
Inferno VE MMv3 NEU-CC 1515/1Y 4S "Flying machine"