Dear modleres
Please suggest hollow shaft out runner motors and variable pitch propellers equivalent to MEGA ACn 16/25/3 combat & MEGA ACn 16/15/4 combat motors with APC 8x4 E & 6x5 E propellers respectively.

Thanks

No hollow shaft outrunner can compare to a MEGA ACn 16/25/3 or MEGA ACn 16/15/4, there is a good reason why they have a 5mm hardened shaft
Outrunner with an hollow shaft & variable pitch prop are meant for 4-D flying and fairly low rpm with a large prop.
ACn 16/15/4 COMBAT

Electromotors MEGA ACn 16/15/4 COMBAT come from already known group of brushless electromotors MEGA ACn 16/15. The COMBAT form is designed and recommended for models, which must resist to high mechanical load. It is ideal for pylon models and for models without undercarriage. The shaft of theese motors is specially adjusted; its diameter is 5 mm and itīs made of hardened steel.