Twin 43bs vs Single 81

[Nick Blackhurst]

"Which is more fuel efficient

"Which is more fuel efficient twin 4.3's with single prop, or a single 8.1 with a dual prop."

 

[Bt Doctur]

A apples and oranges question

A apples and oranges question
I would choose the "twin" factor over a single for reliability.duo-props reduce if not illiminate prop torque though.