RC Helicopter Reviews

This is the 250 Class Electric Micro Helicopter from EXI! The EXI 250 is a fully capable 200 class helicopter are fairly new to the hobby. EXI is the newest modelers around the United States when it comes to advanced high-performance electric helicopter technology. This helicopter is quite small and capable of doing just about any 3D maneuver.

At a quick glance one can’t help but notice the EXI 250’s striking resemblance to the T-Rex 250. Although it’s not an exact clone, it does share an almost identical frame design. The EXI 250 is aggressively priced much lowered- and with that price point it will undoubtedly appeal to anyone who wants to jump in the hobby. Nonetheless, the Pryo 250 is a capable machine and should perform quite well in the hands of intermediate and advanced pilots.

Features:

* Electric Power System
* Simple and lightweight design provides awesome flight performance and extreme 3D capability
* Rigid carbon fiber frame design
* Direct-to-swash CCPM linkages
* Beautiful factory painted fiberglass canopy
* 3.5mm main shaft
* 2.5mm Feathering Shaft
* 8.5mm Tail boom
* Center of Gravity of battery tray designed close to the rotor head
* Belt-driven tail rotor system

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Kit Includes:

* EXI 250 Kit
* 205mm Main Rotor Blades
* Motor pinion gear 15T
* Strap, Zip locks, Double Sized Tape
* #00 Philips screw driver
* 0.9 Hexagon screw driver
* 0.9 (6 angle) star screw driver

Items needed to complete this kit:

* A helicopter ready six channel transmitter and receiver
* 1 – gyro
* Receiver(6-channel or more)
* 4- micro servos
* 1 – 3s-800mah Li-po battery and suitable charger
* Pitch gauge

Specification
- Length:430mm
- Height:187mm
- Main Blade Length:200/205mm
- Main Rotor Diameter:450/460mm
- Tail Rotor Diameter:108mm
- Motor Pinion Gear:15T
- Main Drive Gear:120T
- Tail Drive Gear:28T
- Drive Gear Ratio:1:8:4.28
- Weight (w/o power system):138g
- Flying Weight: Approx 330g

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New SE 450 Special Edition All Aluminum Mini Size 3D Electric Radio Remote Controlled RC Helicopter ARF w/ Fiber Glass Canopy!!

Features:
* Main shaft and tail rotor shaft running by direct transmission belt, which reduce the intermediate transmission energy loss.
* Read Axle screw used high-intensity M2.5 screw to meet the high-speed rotating of the blade.
* The up main shaft bearing block and bottom main shaft bearing block adopt integrated structure, which guarantee the main shaft running smoothly.
* The adjustable Aluminum battery mounting plate can meet different size of battery.
* The Read Axle of the blade used 4mm steel shaft to meet the hard 3D flight.
* 4mm width transmission belt, reducing the slip possibility of the Tail Rotor Drive Belt.

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More Features:
* Their Cowling made with lighter colored glass fiber.
* Safety and convenience Linkage ball.
* All the aluminum part for this TG-450 from CNC Machinery
* Flip-gyroscope sensor structure
* High-intensity hexagonal screw up to +-14 degree.
* 120 degree ECCPN SYSTEM

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Specs:
* Length: 656mm
* Height: 249mm
* Main Rotor Diameter: 714mm(320 Blades)
* Tail Rotor Diameter: 147mm
* Motor Pinion Gear: 12T/13T
* Main Drive Gear: 150T
* Drive Gear Ratio: 1:12,5:4.3(12T) 1:11.51:4.3(13T)
* Weight: 380g
* Flying Weight: 780g-820g

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EXI MB450 Aluminum Alloy ARF Electric Mini Heli w/ 325 Carbon Fiber Blade (PART COMPATIBLE WITH TREX450)

The MB 450 uses a combination of tough, lightweight aluminum and updated composite parts and is designed and equipped to be capable of the most extreme 3D maneuvers . And since it’s 95% assembled, you can have it flying in just a few hours.

This kit is for the flyers who want uncompromised performance and quality. This product arrived with 95% pre-assembled.
# New CNC fiber frame only 1.2 mm, improve the rigidity and perfect for 3D flying.
# CCPM version, new aluminum parts for prompt, precision actions.
# New longer 3K battery mounting plate connects to main frame. It makes the center of gravity closed to rotor blade, and can adjust the center of gravity according to the weight of battery, it reduces the correction when the heli rolling.

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Features:

* Rigid CNC aluminum rotor head for precision and smooth movements.
* Tail rotor hub made of stainless steel, very rigid.
* Use 35pcs precision bearing.
* Great stable and sensitive mixing lever design! Can disply the great stability and precision for 3D flight.
* Special adjustable pitch system, hold rotation system, tail rotor drive belt system! It is a work of great originality for helicopter!

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Key Features

* Using new Main rotor holder with thrust bearing and 4mm Feathering shaft, features smooth rotation and stability under high rotation speed.
* Using Ball and Hiller two systems mixing control. Through simple structure of Ball control system, power-saving of Hiller system and CCPM control, can simultaneously control 3 servo for AILE, EVLE, PIT 3 actions. This CCPM control system is great for 3D flying control and extending life cycle of servos.
* New c.g. amended tail blades feature streamlined and quick, make the gyro more efficient.
* Tail rotor control set with dual bearing, features CNC control piece and smooth structure design, get smooth pitch travel.
* Providing flybar weight- When normal flying, you can add the weights on flybar paddles for stable flight. When aerobatic flying, you don¡¯t need to add the weight, but you can see the flexibility of 3D actions.
* CNC tail pulley assembly and tail holder are using high rigid aluminum alloy, features wear resistant and falling resistance.
* New gear ratio(4.24:1), suitable for the motor with higher KV, provide more safty.
* Using new high strength ball links and stainless steel linkage balls on the whole unit, feature wear resistance, anti-oxidization.

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Specs

* Length:660mm
* Height:230mm
* Main Blade Length:325mm
* Main Rotor Diameter:700mm
* Tail Rotor Diameter:150mm
* Motor Pinion Gear:12T/13T
* Main Drive Gear:150T
* Autorotation Tail Drive Gear:106T
* Tail Drive Gear:25T
* Drive Gear Ratio:1:12.5:4.24/1:11.5:4.24
* Weight(w/omain blade):450g
* Flying Weight:Approx.730~760g

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The Pro Version EXI 450 uses a combination of tough, lightweight aluminum and is designed and equipped to be capable of the most extreme 3D maneuvers right out of the box. And since it’s 95% assembled, you can have it flying in just a few hours

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Key Features

* Extreme 3D capability right out of the box
* 95% factory-assembled
* Direct-to-swash CCPM linkages
* Carbon fiber frames
* Aluminum and composite swashplate
* Tail servo boom mount
* Stainless steel tail rotor hub
* 325mm PRO symmetrical plastic main blades
* Belt-driven tail rotor
* Auto-rotation system
* Rigid CNC aluminum rotor head for precision and smooth movements.
* Tail rotor hub made of stainless steel, very rigid.
* Use 35pcs precision bearing
* Great stable and sensitive mixing lever design! Can display the great stability and precision for 3D flight.
* Special adjustable pitch system, hold rotation system, tail rotor drive belt system! It is a work of great originality for helicopter!

Key Features

* Main Rotor Diameter:27.6 in (700mm)
* Tail Rotor Diameter:5.9 in (150mm)
* Gross Weight:22?4 oz (620?80 g)
* Length:25.6 in (650mm)
* Kit/ARF

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EXI 450 ARF Electric Mini Heli w/ UPGRADES AVAILABLE (100% PART COMPATIBLE WITH ALIGN TREX450)

Stuffs for the EXI
450 Trex 450 Upgrades, Alpha 400 (3500kv) Outrunner Brushless Motor, 11.1V 1300mAh 15C “Exceed RC Fusion Power Series” High Performance Lithium Polymer Battery, Upgrade Package (ESC+Battery+Brushless Motor)

Key Features

* Extreme 3D capability right out of the box
* 95% factory-assembled
* Direct-to-swash CCPM linkages
* Stacked aluminum frames
* Aluminum and composite swashplate
* Tail servo boom mount
* Stainless steel tail rotor hub
* 325mm PRO symmetrical plastic main blades
* Belt-driven tail rotor
* Auto-rotation system
* Gun-metal gray aluminum head block
* Gun-metal gray aluminum skids and tail boom

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Overview

The EXI 450 uses a combination of tough, lightweight aluminum and updated composite parts and is designed and equipped to be capable of the most extreme 3D maneuvers right out of the box. And since it’s 95% assembled, you can have it flying in just a few hours.

Specs

* Main Rotor Diameter:27.6 in (700mm)
* Tail Rotor Diameter:5.9 in (150mm)
* Gross Weight:22?4 oz (620?80 g)
* Length:25.6 in (650mm)
* Kit/ARF

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