P-38 Prop rotation

[Hoops]

I just watched the assembly video. The staff made it clear the props are to rotate outwards. Mine rotate inwards. Came that way from factory. Getting to the Esc and the motor wires could be quite the travail.

[Hoops]

Found an easy access to motor power wires. All good

[kallend]

Most twins with opposite rotation props rotate inwards at the top, unless there is a good performance or aerodynamic reason to do it differently.

BUT the P-38 rotates outward at the top, not inward. They tested inwards rotation, but it created undesirable turbuluence on the tail section.

After a change to outward rotation, the problem went away.

[nuts-n-volts]

Some will disagree, however this is my opinion.

The benefit to outward rotation on electric twins is inherent down-thrust created and proportional to thrust due to the inward vortexes pushing up on the horizontals (instead of down).

The reason "engines" tend to use inward rotation is for an unexpected "one engine out" scenario. ...Torque "semi-" cancels out yaw. It only mildly helps the problem as the pilot still must maintain directional yaw with only one engine. The real problem with this setup is encountered at low speed with two engines running and a hard push on throttles. The pressure from inward vortexes and subsequent downforce on the horizontals can create a stalled condition.

Most of our electric models benefit from outward rotation as they really don't have that "one out" issue. How often do you see an electric motor fail in flight?... especially just one? I use outward rotation on every single one of my twins. Very noticeable in a straight up climb as the aircraft no longer wants to pull onto its back. Aircraft tracks level with applied power in high speed pass. Try it!