EngineAirplaneCarHelicopterElectronics
Helicopter Engine Series
Items
NO.
Displacement
 (cc/cu.in)
Bore
(mm/in.)
Stroke
(mm/in.)
Practical RPM
OUTPUT
(BHP/RPM)
Weight
 (g)/(oz.)
PRO-39H(R)
9604
6.45/0.394
21.6/0.850
17.6/0.693
 
2,000~17,000
1.35/16,000
290/10.23
PRO-50H(R)
9605
8.19/0.500
22.5/0.886
20.6/0.811
 
2,000~17,000
1.8/16,000
405/14.28
PRO-70H(R)
9607
11.49/0.701
25.0/0.984
23.4/0.921
 
2,000~17,000
2.5/16,000
570/20.10
PRO-90H(R)
9609
14.78/0.902
28.0/1.102
24/0.945
 
2,000~16,000
2.75/15,000
575/20.28
Helicopter Servos
Model
Part NO.
Category
Torque 4.8/6V
Speed
Gear
Bearing
Size L x W x H
Weight
 
 
Specification
size
(oz-in)
(kg-cm)
4.8/6V @ 60°
 
 
(in)
(mm)
(oz.)/(g)
S1903
8114
Analog
Standard
41.7/52.8
3/3.8
0.19/0.15 sec
P
Oiless
1.6x0.8x1.48
40.4x20.0x37.9
1.67/47.4
S1903MG
8121
Analog
Standard
41.7/52.8
3/3.8
0.19/0.15 sec
M
Oiless
1.6x0.8x1.48
40.4x20.0x37.9
1.82/51.7
DS1213
8126
Digital
Standard
133.3/173.6
9.6/12.5
0.16/0.13 sec
M
2BB
1.65x0.81x1.56
41.8x20.6x39.6
2.328/66
DS1313
8128
Digital
Standard
133.3/173.6
9.6/12.5
0.16/0.13 sec
M
2BB
1.65x0.81x1.56
41.8x20.6x39.6
2.328/66