Can the FMS Ranger 1220mm fly on 4s? Yes, but with limits!
I might add a lower kv motor to run 4s but it flies just fine either way. On 4s at close to full throttle there is a loud vibration thats likely in the motor area. But, it flies!

▶︎
Why The BD-5 is Every Pilot’s WORST Nightmare?

▶︎
Most Pilots Get Slips Wrong — And They Could Save Your Life

▶︎
FMS Ranger 1220mm revisit

▶︎
Top 5 Best RC Planes for Beginners in 2026

▶︎
The Best beginner RC Airplane got BETTER - FMS Ranger 1220mm V2

▶︎
Was this your first? Hobbyzone AeroScout S

▶︎
The Yak-28 | Fast & Terrifying

▶︎
Unbelievable Workers Compilation | Working with Talented Engineers #45 #adamrose #smartworkers

▶︎
I Acquired a WWII Fighter (replica)

▶︎
100% Blown Wing Powered Airplane

▶︎
FMS 1700mm PA-18 Super Cub PNP - Model AV8R Quick Look/Fun Flight

▶︎
Rookie Pilot's Mid-Flight Error Could Cost Him Everything | Ice Pilots

▶︎
Joe Nall 2026: Epic RC Spectacle Unveiled - Triple Tree

▶︎
Air Force B-52 Crashes Moments After Departure | Captain Steeeve

▶︎
Building the Eclipson Skyward 1.5m 3D Printed RC Plane #rcplane #3dprinting

▶︎
Modifying CargoJet for Extremely Short Runways!

▶︎
Unbelievable Smart Worker & Hilarious Fails | Construction Compilation #7 #adamrose #smartworkers

▶︎
FMS Ranger 1220mm flaperon mod

▶︎
Insane Aviation & Sky Fails Caught on Camera

▶︎
