Over-all length

[_deltaV]

In general, is a longer airplane more favorable? I've had issues with the motor bunching up into itself and explosively uncoiling itself during flight so to solve this I've made the motor stick longer. My current motor stick is 11" long which seems to have solved the problem and my tailboom is about 10" long. I lengthened the motor stick from 9" to 11" so should I shorten the tailboom a corresponding length or keep it as is?

[Less_Incidence]

I use a 12" motor stick and a 13" tailboom.

Theoretically, a model with a longer tail moment is more efficient. Theoretcially and practically, it's more stable. Also practically, the longer the tail moment gets, the wider the turning circle will inherently want to be. Initially, my tailboom was 18" long and I trimmed it to 13" to have a decently tight (~30') turning circle without running an ungodly amount of stab tilt.

Personally, I don't think OAL really matters that much unless it's really extreme.