Aerospace Engines A to Z
Aerospace Engines A to Z

Updated: 18-Aug-2020

Moki Motoren makes small size radial engines for UAV aircraft and large scale models. With five cylinders it has three models available:

-The S-215, the S-250 and the S-400.

Moki S-215
“Moki S-215”

Moki S-250 running
“Moki S-250 running”

-The above photograph belongs to a Moki S-250 installed on a small plane, spinning smooth and without vibrations.

-The photograph comes from a YouTube video.

Moki S-400
“Moki S-400”

From Appendix 11: On their website they advertise a few more engines:

-The 5-cylinder radials S-180, S-300 and the 7-cylinders of 250cc and 350cc.

-The four-stroke, twin-cylinder 100BVT boxer.

-The 50 VT, a four-stroke, single-cylinder.

-And four single-cylinder, 2-stroke engines, 75cc, 45cc, 30cc and 20cc for smaller models.

Engines of MOKI

Model: 100BVT

Arquitecture: 4-stroke2-cylinder Horizontally opposed
Cooling:
Total Displacement: 100 cc
Bore / Stroke:
Power: 7 CV
Weight: 3 Kg

Other details:
Model: 250cc 7 cyl.

Arquitecture: 4-stroke7-cylinder Radial
Cooling:
Total Displacement: 250 cc
Bore / Stroke:
Power: 15 CV
Weight: 6500 g

Other details:
Model: 350cc 7 cyl.

Arquitecture: 4-stroke7-cylinder Radial
Cooling:
Total Displacement: 350 cc
Bore / Stroke:
Power: 20 CV
Weight: 7200 g

Other details:
Model: 50VT

Arquitecture: 4-stroke Single-cylinder
Cooling:
Total Displacement: 50 cc
Bore / Stroke:
Power: 4 CV
Weight: 1450 g

Other details:
Model: S-180

Arquitecture: 5-cylinder Radial
Cooling: Air
Total Displacement: 180 cc
Bore / Stroke:
Power: 10 CV
Weight: 5 Kg

Other details:
Model: S-215

Arquitecture: 5-cylinder Radial
Cooling:
Total Displacement: 215 cc
Bore / Stroke:
Power:
Weight:

Other details:
Model: S-250

Arquitecture: 4-stroke5-cylinder Radial
Cooling: Air
Total Displacement: 250 cc
Bore / Stroke:
Power: 16 CV
Weight: 5480 g

Other details:
Model: S-300

Arquitecture: 4-stroke5-cylinder Radial
Cooling: Air
Total Displacement: 300 cc
Bore / Stroke:
Power: 18 CV
Weight: 6300 g

Other details:
Model: S-400

Arquitecture: 4-stroke5-cylinder Radial
Cooling:
Total Displacement: 400 cc
Bore / Stroke:
Power: 23 CV
Weight: 9200 g

Other details:

The author of this edition of Aeroengines AtoZ, through Aeroteca, collaborated on Version 2 of this video, which is presented here.

To understand the operation of the connecting rods, the 1929 Continental R 670 single-cylinder engine was chosen.

A demonstration of Version 3, improved at the author's suggestion, is also available on YouTube at a later date. This version shows bronze valve guides, improved valve spring movement, and the split crankshaft counterweights and front bearing balls also move.

The design is from Juan Soler, Sant Cugat, Barcelona

Below we show a flash of version 3

Counting also with the coloboration of JMC of Enginys Mecanics in Mataro, Barcelona