Updated: 08-Aug-2019
(Former Rockwell JLO). Engines designed especially for ULM.
-All are two-stroke engines. Outstanding was the single-cylinder "215" that gave 20 hp with a displacement of 214 cc.
-The very similar "340" with 338 cc and the twin-cylinder "430" with 428 cc.
"Cuyuna 430 cutaway"
-Some had direct transmission and others belt gear.
-We saw them installed on the Quicksilvers and the Pterodactyls, first generation of ULMs.
-The Cuyuna and the JLO engines were almost identical and had many interchangeable parts.
-In fact the original Cuyunas were installed in American snowmobiles in the style that Austrian Rotax is doing now.
"Cuyuna pusher"
-Due to the modular shape of the cylinders and air flow through their fins, a single fan could cool all the cylinders.
-Each cylinder has its contact, its coil and its electric capacitor.
-If the engine is a "430-D" it has direct transmission and if it is a "430-R", it has reduction gear.
-It can be operated upright or inverted. Starting, as we see, is done by a start puller.
"Cuyuna invertido"
-The Cuyuna ULII-02 and the "Pave Tiger" engines responded to military orders for RPV (Remotely Piloted Vehicle).
Engines of CUYUNA
Model: 2si-215
Arquitecture: 2-stroke Single-cylinder
Cooling: Air
Total Displacement: 214 cc
Bore / Stroke:
Power: 20 HP @ rpm
Weight:
Model: 2si-230
Arquitecture:
Cooling:
Total Displacement:
Bore / Stroke:
Power: @ rpm
Weight:
Model: 2si-340
Arquitecture: 2-stroke Single-cylinder
Cooling: Air
Total Displacement: 338 cc
Bore / Stroke:
Power: @ rpm
Weight:
Model: 2si-460
Arquitecture:
Cooling:
Total Displacement:
Bore / Stroke:
Power: @ rpm
Weight:
Model: 2si-540
Arquitecture:
Cooling:
Total Displacement:
Bore / Stroke:
Power: @ rpm
Weight:
Model: 2si-690
Arquitecture:
Cooling:
Total Displacement:
Bore / Stroke:
Power: @ rpm
Weight:
Model: 2si-808
Arquitecture:
Cooling:
Total Displacement:
Bore / Stroke:
Power: @ rpm
Weight:
Model: Cuyuna 430
Arquitecture: 2-stroke2-cylinder In-line
Cooling: Air
Total Displacement: 428 cc
Bore / Stroke:
Power: @ rpm
Weight:
"Cuyuna - 430 engine cutaway"
Model: Cuyuna 430D
Arquitecture: 2-stroke2-cylinder In-line
Cooling: Air
Total Displacement: 338 cc
Bore / Stroke:
Power: @ rpm
Weight:
Direct transmission to the propeller
Model: Cuyuna 430R
Arquitecture: 2-stroke2-cylinder In-line
Cooling: Air
Total Displacement: 338 cc
Bore / Stroke:
Power: @ rpm
Weight:
With reduction gear.
Model: Pave Tiger
Arquitecture:
Cooling:
Total Displacement:
Bore / Stroke:
Power: @ rpm
Weight:
Model: UL-II-20
Arquitecture:
Cooling:
Total Displacement:
Bore / Stroke:
Power: @ rpm
Weight: