The ECO 8/16 require a servo no taller than 1.1 inches, so this limits servo choices consider-
ably.
• JR 341 (0.22 secs/60 degrees, 32 oz-in)
• JR 351 (0.22 secs/60 degrees, 32 oz-in)
• HS-81 (0.11 secs/60 degrees, 36 oz-in)
• HS-85MG/BB+ (0.16 secs/60 degrees, 42 oz-in)
• GWS Micro 2BBMG (0.17 secs/60 degrees, 75 oz-in)
• Futaba S3102 (0.22 secs/60 degrees, 63 oz-in)
• Volz Micro-Maxx (0.16 secs/60 degrees, 55 oz-in)
• Volz Micro-Maxx XP (0.16 secs/60 degrees, 66 oz-in)
• JR DS368
• Multiplex Mini Polo Digi 4 (0.10 sec/60 degrees, 39 oz/in)
6.2.1.2. Logo 10 choices
The Logo 10 uses servos from 1.1 inches to 1.3 inches tall, so it can use all the servos used in
the ECO 8/16 except the servos with less torque are not suitable. Probably 42 oz-in of torque
is a reasonable minimum requirement for a Logo 10.
• HS-85MG/BB+ (0.16 secs/60 degrees, 42 oz-in)
• JR 341 (0.23 secs/60 degrees, 42 oz-in)
• JR DS368
• Multiplex Micro BB?
6.2.1.3. Summary
I've been told the Volz servos are too deep to fit into the Logo 10 frame, so they are sup-
posedly not usable for the Logo 10.
For the Piccolos, the most popular choices seem to be the Hitec HS-50 and the HS-55.
If you use ANY digital servos, see the BEC section for more info.
The HS-81s and HS-85BBs can be upgraded HS-81MGs and HS-85MGs by replacing the
plastic gears with the metal gears from the MG version, which are available at many places
(Servocity, etc).
6.2.2. Tail (rudder) servo
The tail servo for a helicopter needs to be very fast to respond quickly to small random tail
movements. The tail servo should have a specification of 0.12 sec / 60 degrees of travel or
better.
For the Corona, Logo 10, and ECO 8/16, some usable tail servos are:
Helicopter Parts Selection
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