Engine Comparison Chart

Engine Specification Comparison Chart


CAM 100

Rotax 912


Type4-cylinder, 4 stroke, in-line, liquid cooled4-cylinder, 4 stroke, opposed cylinders, liquid cooled4-cylinder, 4 stroke, opposed cylinders, liquid cooled
Power Output100 hp (75 kw) at propeller flangeMAX: 80 hp @ 5500 rpm100 hp
Displacement1488 cc (90.7 in.)1,211.2 cc (73.91 in.)1781 cc (108 in.)
Bore74 mm (3.07 in.)79.5 mm (3.13 in.)92 mm (3.84 in.)
Stroke86.5 mm (3.41 in.)61.0 mm (2.40 in.)67 mm (2.68 in.)
Direction of RotationClockwise facing propeller flangeCounter-clockwise (facing propeller flange) 
CoolingWater-glycol mixtureLiquid cooled cylinder heads, air cooled cylinder 
BlockOne piece aluminum with iron liners  
CrankshaftFull girdled, hardened, 5 main precision bearingsCase-hardened with plain bearings 
LubricationFull pressure, internal gear type pump, wet sumpDry sump with trochoid pump, cam shaft driven, oil return by BLOW-BY gasa) Dry sump, remote reservoir – engine b) Self contained oil sump / Internal Mist – reduction
IgnitionRedundant dual digital electronicCapacitor discharge double ignition, generator with electronic advance and integrated magneto, redundantCrank Triggered, dual ignition, single spark plug
Carburation2 barrel progressive opening downdraftCarburated 
Reduction System100 mm (3.93 in.) HTD cog beltIntegrated reduction gear, torsional shock absorptionHelical Cut, Steel spur Gear type
Reduction Ratio2.4:12.27:11.48 to 3.41:1 (2.34:1 std)
Oil Type5W30 SyntheticSAE 20W50 or SAE 30 
Oil Quantity3.5 liters (3.7 US quarts)3.0 liters (.8 US gal) 
Weight226 lbs (102.2 kg)140.8 lbs (63.9 kg)214 lbs (97.1 kg)
Fuel Required90 Octane unleaded, minimum (R + M)/2. Can also use 100 LL Aviation GasolinePremium grade leaded gas or SUPER ROZ 95 unleadedAuto Lead & No Lead, Reg. or Premium Aviation 80/87 (red) and 100 LL
Cylinder HeadOne piece aluminum cross flow design4 separate cylinder heads 
Compression Ratio9.6:19.0:18.9:1
CamshaftCast alloy, heat treated parkerized  
Alternator15 Amp belt drive (65 amp optional)12V/250 W AC, 18 AmpDual (2) “V” type Belt Drive
Specific Fuel Consumption.43 lb/bhp/hr at 80% power.45 lb/bhp/hr @ 75% cruise 
Starting SystemElectric gear reduction starterIntegrated electric starter2 kw, 3 stage, Geared Electric Starter
TBO2500 hours1,200 hours 
Warranty5 Years / 500 Hours6 Months (1 Year Extended – Optional)1 Year

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