Site Links:

Hirth  PowerFin  BlueMax Accessories  New Stuff


Engine Links:

15hp 25hp Inline 45hp  Opposed 40hp  55hp/2703  65hp  85hp  110hp 


3502 water cooled 2 cycle 60hp

 

Dual Carb 
Recoil Start

Available April 08 .00

Dual Carb 
Electric Start

.00

Dual Carb 
Recoil Start 
with Gear Box

.00

Dual Carb 
Electric Start 
with Gear Box

.00

Oil injection option

$232.00

Electronic Fuel Injection Option

$1430.00

Note: Initial deliveries of 3502 engines are scheduled to begin in April 2008.

Special Design - High Torque/Low Rpm - fuel efficient Engine

The 3502 produces 60hp at only 5000 rpm while building an impressive torque of 62 ft lbs. at 4750 rpm. Operating in an Rpm range 1500 Rpm less than conventional 2 cycles and 1200 Rpm less than competing 4 cycles results in a very smooth, quiet running engine with impressive power. Fuel rate is lowered and TBO increases.

3502 incorporates Al-Nikasil coated cylinders for superior performance and reliability. Al-Nikasil in simple terms is a nickel based material, applied in a paste form, when super heated it becomes part of the cylinder itself. Al-Nikasil provides for a super low coefficient of friction, reducing engine heat and wear. The combination of Nikasil cylinders with water cooling render these engines immune from cold seizure, shock cooling or seizure from high EGT conditions. The pistons and cylinders expand at the same rate thus providing for a seizure resistant environment. 3502 crankshaft is 4130 chromemolly steel. Heads, cylinders, rings, block casting, connecting rods and associated components are all of the highest grade alloys available. With optional vertically mounted fuel injection 3502/03 can be used in compact engine compartments. Mounting bolt pattern is identical to the R-582.

 Factory recommended TBO is rated at 1200 Hrs. @ 75% power.

Model:

3502

Carburation:

Dual 34mm slide or optional electronic fuel injection

Engine Type:

2 cycle, two cylinder

Fuel Pump:

Auxiliary external pneumatic - 12VDC with fuel injection

Bore:

76mm

Lubrication:

Fuel mixed with oil @ 50:1 /Blue Max @100:1 or optional oil injection

Stroke:

69mm

Rotation:

Counter clockwise, viewed from output end

Displacement:

625cc

Starter:
Alternator:

12 volt electric, recoil or both
250 watt/20 amp alternator standard

Compression:

9.5:1

Cooling:

Water cooled.

HP Output:

60hp @ 5000rpm

Weight:

79 lbs-not including radiator & coolant. Optional gearbox adds 19 lbs.

Torque:

62ft/bs @ 4750rpm

Reduction Units:

G-50 gearbox available in 2.16:l, 2.29:l, 2.59:l, 3.16:l and 3.65:l ratios.

Ignition:

Dual CDI
(Capacitive digital Ign.)

Drive Coupling:

Elastomeric dampener or optional centrifugal clutch.

Click here to view engine print side view.

Click here to view engine print end view.

Click here view to exhaust system print.

Picture of 3502 exhaust side of engine  

Picture of 3502 intake side of engine

Picture of 3502 bottom view of engine

Top Of Page