View Full Version : New 4 stroke Engine

Don83000 - n/a
25-Sep-06, 03:44 PM
AeroTwin Engine Specifications:

General Specifications:

• 65 HP @ 4200 RPM

• Weight: 105 lbs

• Dimensions (Height): 17.5"

• Two Cylinders, In Line

• Dry Sump (Runs in Vertical and Horizontal position)

• Air Cooled 972cc 4 Stroke

• Firing Angle 360

• Bore: 101.6

• Stroke: 60mm

• Compression Ratio: 8.0:1

• Manifold Pressure: 8 psi

• Two Sparkplugs per Cylinder

• Two Valves per Cylinder

• Belt Driven Twin Camshafts

• Electronic Fuel Injection and Ignition

• Fuel Octane Requirement: 91UL

• Gear Reduction Box: 18.5lbs (see detail below)

• Propellar Flange: standard output flange has 75mm and 100mm bolt-circle

pattern for mounting, an aircraft standard SAE No.2 propeller flange is also

available as an option



kach22i - n/a
25-Sep-06, 04:34 PM

I clicked the on-line order link, ended up at a RC helicopter site.

Have you seen this one?



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* Single rotor, 650cc displacement

* 85 HP @ 7,750 RPM

* 67 ft-lbs Torque @ 3,700 RPM

* 106 lbs

* (17.5"-L x 16.5"-W x 17.5"-H)

* Gasoline carburetor (standard)*

* Fuel injection (optional)

* Electric starter

* CDI Spark ignition

* Metered oil lubrication system

* 40 Amp generator coil (standard)

* Specifications for battery, exhaust

and cooling system provided

* Metric standard design


Don83000 - n/a
25-Sep-06, 07:10 PM
Looks interesting but a bit high end on rpm makes one wonder how long the tip seals will last what is the bhp and torque at a more respectable say 4500rpm. Also what about fuel consumption as the rotary we now use drinks fuel like a 2 stroke.