OSENGINES 38600 GT60 W E 6020 MUFFLER

This is the O.S. GT60 Gasoline Large Scale Airplane Engine
with Pitts Style E-6020 Muffler.

FEATURES: Linerless cylinder with the cylinder head integrated with the
cylinder, this arrangement allows for extremely precise intake/
exhaust timing and very high scavenging efficiency resulting in
higher output
IG-02 electronic ignition system can be powered by 4-6 cell NiCd/
NiMH batteries or 2-cell LiPo batteries
Custom designed Walbro carburetor mounted to rear of engine with
integrated choke rod guide
Two year limited warranty through Hobby Services beginning at date
of purchase

INCLUDES: O.S. GT60 Gasoline Engine, IG-02 Electronic Ignition. E6020 Muffler,
CM6 Spark Plug

REQUIRES: Propeller: Break-In 23x8
Acro/Scale 22x10-12, 23x8-10, 24x8-10
Unleaded regular gasoline (no need to use high octane)
Two-Cycle Oil: Break-In, Klotz Modelube recommended, mix at 30:1
gas/oil mixture for 10 flights, 1.3 - 1.6 gallons (5-6 liters) of
gas
After Break-In: mix at 50:1 ratio, See COMMENTS below
Electric starter NOTE, The propeller must be brought up to at least
100RPM in order for the electronic ignition to work

SPECS: Displacement: 3.656 (59.91cc)
Bore: 1.732" (44.0mm)
Stroke: 1.551" (39.4mm)
RPM Range: 1,600-8,000 RPM
Output: 6.00 hp @ 7,000 RPM
Weight: Engine, 49.38oz (1400g)
Ignition module, 3.7oz (105g)
Muffler: 6.28oz (178g)
Suggested Propeller Size and RPM Data:
22x10 6,900 RPM
23x8 7,000 RPM
24x8 6,550 RPM
24x10 6,150 RPM
Distance/Vertical Mounting Hole Centers: 2.6" (66mm)
Distance/Horizontal Mounting Hole Centers: 3.1" (78mm)
Height of Mounting Tabs: 3.4" (85.6mm)
Height Lower Mounting Tab/Top of Cylinder Head: 6.9" (175mm)
Height Lower Mounting Tab/Crankshaft Center: 1.7" (42.8mm)
Height Crankshaft Center/Top of Cylinder Head: 5.2" (132.2mm)
Cylinder Head Width: 6.6" (168mm)
Width at Mounting Tabs: 3.8" (97.6mm)
Center of Muffler Mounting Holes: 1.6" (40mm)
Distance/Crankshaft Center to Muffler Hole Center: 2.7" (69.5mm)
Length from Carburetor to Backplate: 1.5" (38.8mm)

COMMENTS: If using a different brand of oil other than Klotz, OS recommends
their own mix ratio which may differ from the manufacturers'
For 40:1, and 50:1 oils, OS recommends a 30:1 gas/oil mixture
25:1 is 5oz of pre-mixed 2-cycle oil or 151 ml per gallon of fuel
30:1 is 4.3oz of pre-mixed 2-cycle oil or 126 ml per gallon of fuel
40:1 is 3.2oz of pre-mix 2-cycle oil or 95 ml per gallon of fuel
50:1 is 2.6oz of pre-mix 2-cycle oil or 76 mll per gallon of fuel