Bell 412 Scale R/C Helicopter Electric Power Conversion

A quick video clip demonstrating the starting sequence of the heli. The mechanics set started 'life' as a Miniature Aircraft X-Cell 60, originally powered by a .60ci glow (nitro) fueled engine. I engineered an electric motor conversion to replace the nitro engine which results in a very realistic (turbine) starting effect, low vibration and paint that isn't suffering from the deterioration of the fuel and exhaust.

Category:

Science & Technology

Tags:

• Radio
• Control
• aviation
• space
• model
• aircraft
• helicopter

[MrAtvcrash]

Fail i thought it was a real one and i was thinking shouldnt it be moving the grass during start up

[StormyMaxPerry]

@MrAtvcrash You 'fail' because you didn't read the title of the video to know what you were watching.

I 'win' because my heli and its startup process was realistic enough to trick you into believing it was a full-scale machine. FYI: The grass under a 'real' helicopter won't move until some collective pitch is commanded of the rotor blades. On startup the pitch is at zero degrees to lessen the load on the turbine. Cheers

[yascumbag]

ah right you kept the clutch so the motor can freewheel before engaging!

what motor are you using and what is the voltage?

[StormyMaxPerry]

@yascumbag

Motor is a Great Planes RimFire 50-65-450 (450Kv) running off of 10S LiPo (37V nominal) and Castle Creations Phoenix 85HV ESC. The 85HV allows for a very slow startup when using a PC to set its internal parameters. The new ICE 80HV from Castle is the current king of ESC's for heli's. I can't guaranty all RimFire motors will give this same sound as the newer production models seem more quiet. GL!

[AsylumDevil]

@StormyMaxPerry No, your obviously a dumbass. hes saying HE failed. not you. Therefore, you fail

[xxxreason]

good engenering it sounds truly like jet

[MrAtvcrash]

Stupid i was saying i fail naaaw u fail cause i didnt know what it was that is a fail for u now

[StormyMaxPerry]

@yascumbag "so in essense youve made a starter motor for the chopper?"

No, not quite. The one motor inside the heli is the flight/driving motor. But because there's a centrifugal clutch on the motor's output and also because there's a "slow start" programmed into the brushless motor electronic controller, the clutch engagement delay allows the drive train to have a more realistic spool up. It's the best way to drive the rotors in an electric-powered, scale model heli. No engine inside the heli.

[yascumbag]

@StormyMaxPerry so in essense youve made a starter motor for the chopper?

thats funny real choppers or at least the ah64 has a electric start up called the APU (Auxiliary power unit) which runs the spool up process to start the engines and take the strain of powering up off them they also can be used in an emergency. you've made this thing amazingly realistic.

[yascumbag]

if theres one thing i have to do with my life... is to buy one of those i dont care how expensive it is! i must ultimatly own one of these!