Products

Evolution 45GX2 Gas Engine

[EVOE45GX2]

$599.99

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Required to Complete

Exhaust Systems:

EVO30044206E Silencer System Complete (cannister type)

EVO30043400 Inverted Wraparound muffler

BIS05546 Inverted muffler

Propeller:

22x8 or 23x8

Manuals

Parts Explosions

The 45GX2 was designed to give 50cc planes like Hangar 9’s 27% Cap 232G unlimited 3D performance.

With its lightweight magnesium crankcase and advanced porting, the 45GX2 offers the highest power-to-weight ratio in the Evolution® Gas lineup. Aimed directly at the very popular 50cc class of models, the Evolution 45GX2 will provide that vertical thrust you crave for 25% to 30% scale aerobatic planes like Hangar 9’s 27% Extra 260 ARF.

The 45GX2 comes equipped with Evolution’s new GX2 Ignition System. The GX2 system can be powered by most any 2-cell Li-Po pack without the need of a regulator. It also features a sophisticated auto-choke function, timing that can be programmed for mufflers or tuned pipes, and an optional, remotely-mounted LED tach.

Features

  • Specifically designed for 50cc 27% scale models
  • Easy-to-start electronic ignition
  • Superior Porting
  • Specially engineered for no-fuss flying
  • Preset Walbro carburetor
  • Same no-fuss reliability as Evolution's glow engines
  • Includes everything needed for installation

Specifications

Type:
2 - Stroke
Displacement:
2.60 cu in (43.00 cc)
Bore:
1.49 in (38.00 mm)
Stroke:
1.49 in (38.00 mm)
Cylinders:
Single
Engine (Only) Weight:
1290 grams (45.53 oz)
Crankshaft Threads:
M10 x 1 mm
Benchmark Prop:
23"x8" Mejzlik @ 6100 rpm
Prop Range:
22"x8" thru 24"x10"
RPM Range:
1,000 - 7,500 rpm
Fuel:
Gas/Oil mix 40:1
Muffler Type:
Can
HP:
5.2 PS /6,200 rpm
Cylinder Type:
Ring
Starting System:
Electronic Ignition
Carb Type:
Walbro
Crank Type:
Ball Bearing

Parts & Accessories

Parts Listing   (See All)

  • Connecting Rod Washer 45GX, 58GX, 50GX, 80GX

  • Reed Valve Gasket-Bottom(2),58GX,50GX

  • Drive Washer Taper Key 45GX,50GX, 80GX (2.6)

  • Propeller Nut, 45GX, 80GX (2.6)

Optional Accessories   (See All)

  • Evolution Gas Start Kit

  • Exhaust Coupler: 45GX/2,58GX/2,116GX/2

  • Muffler, Inverted, Wraparound EVO45GX/2, 50GX

  • Silencer System Complete:45GX/GX2/50GX

Used In...   (See All)

The "***DISC BY EVO ***REORD EVOE50GX" is used in the following:

Photos

 

Support

Detailed Information

Evolution 45GX Installed in the Extra 260 ARF

Bulletins

Update to installation and programming instructions for 45GX2/58GX2 ignition system

 

Short Silencer Choke Settings

(e.g. Pitts Style)

 

1)      Using the throttle stick, close the choke until it closes completely. Wait until the LED blinks once, indicating the ignition has memorized the “closed choke” position.

2)      Using the throttle stick, open the choke valve until it is all the way open. Wait until the LED blinks once indicating the ignition unit has memorized the “choke open” position.

3)      Move the choke to the closed position and hold there for an additional 5 seconds, and the LED will blink rapidly, indicating that the Short Silencer Pre-ignition program has been set.

4)      You can now disconnect the receiver.

 

Long Silencer Choke Settings

(e.g. Canister or Tuned Pipe)

 

1)      Using the throttle stick, close the choke until it closes completely. Wait until the LED blinks once, indicating the ignition has memorized the “closed choke” position.

2)      Using the throttle stick, open the choke valve until it is all the way open. Wait until the LED blinks once indicating the ignition unit has memorized the “choke open” position.

3)      Leave the choke open for an additional 5 seconds, and the LED will blink slowly, indicating that the Long Silencer Pre-ignition program has been set.

4)   You can now disconnect the receiver.

 

Recent tests have shown that the new Evolution Engines GT2 and GX2 ignition systems require a minimum of 6.4 volts for proper operation.  Subsequently, it is necessary to use either a 6-cell, 7.2-volt Ni-Cd/Ni-MH battery or a 2-cell, 7.4-volt Li-Po (lithium-polymer) battery as the power source for these ignitions.  Capacity ratings of 1200mAh are sufficient for a day’s flying time.

 When the battery voltage drops below 6.4 volts, the ignition will not allow the engine to restart.  This battery requirement applies to 26GT2, 45GX2 and 58GX2 engines having the new ignition and has now been incorporated into the instruction manuals for these engines.

It has come to our attention that some users are not aware that when using the GT2/GX2 electronic ignition that it fires the spark plugs for 1 second to clear any unwanted oil or drainage from the spark plug prior to starting the engine. If the engine is in the compression position (i.e. the piston is above the exhaust port in either the up or down part of the stroke) any compressed fumes may ignite causing the propeller to turn and possibly the engine to start un-intentionally..

To prevent this with the Evolution Gasoline GX2, GT2 Ignition System the Ignition Power Switch must be turned off, check to see that the piston is in the bottom dead center (BDC) position. (Bottom Dead Center can be found by rotating the propeller through the compression stroke. As you rotate the propeller you will feel it tighten, then suddenly loosen. Once the turn becomes very easy you have completed the compression stroke and are at Bottom Dead Center.)

Once you are sure the piston is in this position you may then turn on the ignition power switch and operate the system safely.

As always it is important to use extreme care when near or with engines, fuel and propellers. Please use caution when working with these components.

If you have any questions or concerns please contact our Product Support team at 1-877-504-0233 or productsupport@horizonhobby.com

Notice:

 

It has come to our attention that the muffler bolts provided with the Evolution® inverted wraparound mufflers for the EVOE45GX2 and EVOE58GX2, were not quite the correct size. This can result in the muffler coming loose in flight.

 

The part numbers for the effected mufflers are: EVO30043400 (fits 45GX/2) and EVO30013400 (fits 58GX/2).

 

To obtain the correct size muffler bolts, contact Horizon’s Product Support at 877-504-0233 or by e-mail at productsupport@horizonhobby.com. 

 

We regret any inconvenience this may have caused.

 

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