Fast RC Flying Wing KFm4 (Scratchbuilt)

My 600mm wingspan scratchbuilt foamboard flying wing (balsa elevons) with KFm-4 step aerofoil. Max speed of 118mph (used a doppler).
Motor: Turnigy 450 Brushless Heli Motor 2830 3500kv
Prop: 4.5x4.5 EMP
ESC: TURNIGY Plush 40amp Speed Controller
Servos: HXT900 9g / 1.6kg / .12sec Micro Servo
Battery: 1800mah 4s 65~130c LiPo

[@tubeseek41]

Near the speed of sound ! :) What prop did you used ?

[@josanjosan]

thanks!

[@MrLimitlessME]

WOW..Good work!

[@josanjosan]

it was a 4.5x4.5 EMP prop. but it took so many landings, its slightly shorter

[@MyLonewolf88]

OMG....THAT WAS AWESOME!!

[@UnlimitedVertical]

I just did a scratch build video for a KFm-4 delta. I hope it's as fast as this one! I haven't had a chance to maiden mine yet.

[@RIPcombat]

nice

[@ikimonoz]

What flying wing did you used? What profiles and dimensions? Thanks