MDS Helicopter Engines

These engines are made in Russia.  MDS engines tend to have quite a high compression so give it a try with 5% or less nitro .

Engine Specification Chart:

  .18 .28 .38 .40 .58 .68 .78 1.48 2.18
Bore 16.0 mm 19.0 mm  20.3 mm 21.0 mm  23.6 mm 25.4 mm 26.2 mm  32.5 mm 36.5 mm
Stroke 14.0 mm  16.0 mm  18.4 mm  18.7 mm  22.0 mm  22.0 mm  24.3 mm  29.7 mm  34.55 mm
Displacement .18cu in .28 cu in  .37 cu in  .39 cu in .59 cu in  .68 cu in .78 cu in 1.48cu in  2.18 cu in
Output 0.52 hp  0.86 hp  1.20 hp  1.30 hp 1.72 hp 2.21 hp 2.40 hp 3.7 hp 4.8 hp
Engine Wt. 6.08 oz  9.60 oz 10.56 oz 12.8 oz  14.08 oz 18.24 oz  19.6 oz 29.5 oz 48.32 oz
Muffler Wt. 1.69 oz  3.2 oz 4.8 oz 5.12 oz  5.4 oz 6.4 oz 6.4 oz n/a n/a
RPM Range 2.5 - 22k  2.5 - 20k 2.5 - 18.5k 2 - 17k  2.5 - 18k 2.5 - 18k 2.5 - 13k 2.5 - 10k 2-8.9k
Crankshaft 10-32  1/4 x 28 1/4 x 28 1/4 x 28 1/4 x 28 5/16x24 5/16x24 5/16x24 10x1 mm


MDS engines  -  Instructions with parts listings for the 2003 range from 18 to 218 sizes  including 38/48/68 Helicopter variants.