6
AeroVee 2.1
Rev Z. 01/14/2015
Sonex Aircraft
LLC
© 2014 All Rights Reserved
SPECIFICATIONS
General Specifications
(Subject to change without notice)
Power and Displacement:
HP @ 3400 RPM ..........................................................80 HP
Static RPM @ WOT (with correct propeller) ...... 3000 RPM
Bore ............................................................................. 92mm
Stroke .......................................................................... 82mm
Displacement ..............................................................2180cc
Compression Ratios (Builder Adjustable):
7.0:1
For use with automotive gasoline with a posted
(R+M)/2 of 90 or greater conforming with ASTM D 4814.
8.0:1
For aviation gasoline 91/98 minimum grade con-
forming to ASTM D 910
Ignition System:
Firing Order ........................................................... See Photo
Spark Plugs ........................................ Autolite 4163 or equal
Spark Plug Gap:
Top Plugs ....................................................................018”
Bottom Plugs ..............................................................032”
Timing:
Primary Ignition (Magnatrons) ........... Fixed @ 28
o
BTDC
Secondary Ignition (Electronic) ......................... 28
o
BTDC
Ignition Module Gap (Primary Ignition) .............. .010-.014”
Cooling and Lubrication:
Primary Cooling .............................................................. Air
Secondary Cooling ........................................................... Oil
Oil Capacity .......................................................2.75 US Qts.
Oil Type ............ See "Engine Oil" section for approved oils.
Fuel System:
Throttle Body ....................AeroInjector, ACV-C07S, 32mm
Approved Fuels:
7.0:1 Compression:
Automotive gasoline with a posted
(R+M)/2 of 90 or greater conforming with ASTM D 4814.
8.0:1 Compression:
Aviation gasoline 91/98 minimum
grade conforming to ASTM D 910.
Electrical System:
Battery Required (minimum) .........................12v @ 20 amp
Starter .........................................................................Geared
Alternator....................................................................20 amp
Propeller Drive:
Propeller Drive ....................................................Direct (1:1)
Prop Bolt Pattern .......... 6 holes, 9/16" dia., on 4" dia. center
Prop Drive Bushings .........................9/16" dia. x 7/16” long
Valve Setting:
Valve Setting (cold) .......................................... 006" to .008"
Operating Limitations
(Subject to change without notice)
Idle RPM .........................................................700-900 RPM
Cruise RPM ............................................. 3200 +/- 200 RPM
Maximum RPM ................................................... 4,000 RPM
Oil Temp. - Min. ..........................................................160
o
F
Oil Temp. - Max. ........................................................ 230
o
F
Oil Pressure - Min. ..................... 10 PSI (hot oil, idle RPM)
Oil Pressure - Max. ...................................................100 PSI
Oil Pressure@ Cruise ............................................ 40-50 PSI
CHT @ Cruise .....................................................350
o
-375
o
F
CHT @ Climb (5min.) ................................................ 420
o
F
CHT Max. .................................................................... 450
o
F
EGT Max. .................................................................. 1400
o
F
Cylinder Identification, Engine Orientation,
and Firing Order
Cylinder Identification
For assembly and maintenance, the AeroVee uses the cylinder
identification numbers shown below.
Engine Orientation
When referencing the location / orientation of items on the
engine, "Front", "Back", "Left", and "Right" are used as if the
engine is installed in a tractor configuration and viewed from
behind the engine, as shown below.
Firing Order
The AeroVee has a "wasted spark" ignition system which al-
lows the spark plugs to fire on non-combustion strokes as well
as combustion strokes. The arrows in this diagram illustrate
the order of combustion.
1
2
3
4
Front
Back
Left
Right
CYLINDER NUMBERING, FIRING ORDER,
and ENGINE ORIENTATION
