Ace R/C Mini-Titan e325 | Jon's Home Blog

I wanted to post some more pics of the heli for anyone who might be interested. The kit is an Ace R/C Mini-Titan e325. 325 is a relative number to the size of the motor in an electric helicopter, and they range quite a bit. A 600 size electric motor is equivilant to a .30/.50 cubic inch sized nitro-methonal helicopter.

You can click here to see more pics of electric, nitro and gasoline powered R/C helicopters I own or have owned (new window) from my helicopter site.

The picture below is of a nitro-methonal powered helicopter I owned, provided as a comparison for the smaller electric one which is the subject of this post, and pictured in the gallery images below it.

Ace R/C Raptor .50 Nitro-Methonal Helicopter

A .50 Powered Nitro-Methonal Raptor 50

The smaller electrics, though, are great for a quick quiet flight in a small area where you wouldn’t want to fire up a nitro-methonal or gasoline combustion engine powered chopper. Though they tend to have quite a few benefits, they are not really neighbor friendly, and it’s not really safe to fly them in tight quarters.

My Mini-Titan runs the stock motor and electronic speed controller included with the kit. The blades, as seen in the photo, are Align 325 Pros. They are wooden blades, but perform decently. The stock kit blades are very heavy and not great.

My e325 Setup:

Radio: Futaba 9CHP 9-channel computer radio
Receiver: Futaba 149DP 9-channel PCM receiver
Servos: 3 Hitech HS-65MG metal gear for the cyclic and collective pitch on the main rotor
1 Futaba S9257 Digital Tail Rotor Servo
Gyro: Logitech LGT-2100T heading lock gyro (for the tail)
Flight Recorder: flight data recorder from Eagle Tree

The data recorder board records voltage and current used and allows me to graph out power consumption from the motor and servos on my PC so I can see how to better tune or improve the helicopter towards better performance.

The cyclic and collective on the main rotor is controlled using eCCPM (electronic Cyclic, Collective, and Pitch Mixing). eCCPM allows 3 servos to perform the same function as 4 to 5 servos in a mechanically mixed system, but it requires stronger servos as the load from the head is the same as it would be with 4 to 5 servos.

Please check out the photos below for some pics of the heli’s internals, it is a bit dusty, I was hoping Sunday’s flight would help remove some of it, but I may just need to use some canned duster on it.