From the specs... I can find no difference in the Futaba S-3001 and the S-3004 except the mounting lugs....

From the Tower Website... I see that the 3004 has a note that it is not recommended for heli use. I also know that the main difference between the 3004 and 3003 is the ball bearing at the output shaft.

I have had 2 Futaba 3003's fail on my heli. (luckilly I was able to bring it down)

I'm just flying an inexpensive Century Hawk, and don't want to stick $300 worth of servos in a $150 heli.[&:] But I also don't want to be replaceing a servo every 3 or 4 flights. (or have one fail and not be able to control where the heli goes...)

Will the 3001's handle the heli's vibration better? If not... which servos SHOULD I put in realizing that this is supposed to be a low end heli?

What are the differences in the 3001 and 3004 aside from the mount lugs?

(typos... again...)

Hi FHHuber,

The S3001 has a different motor, amp, and output gear than the S3003 and S3004. The S3001s' should be fine for heli use, but if you would like to "upgrade", the S9001s' would be the next step up.

I hope you find this information helpful. You can also reach our Futaba support technical team at 217-398-8970, or via fax at 217-398-7721.

Sincerely,
Krysta
Lead Futaba Customer Service and Programming Technician

Hi Krysta

Does Futaba have any web based resources explaining servos and the differences between them like digital and non-digital
and if they can work with all futaba radios ETC

thanks

cheers

http://www.futaba-rc.com/servos/index.html

The 3001 has an indirect drive which is less susceptible to vibration and therefore better suited to helis, while the 3004 is direct drive. This is supposedly why the 3001 is more expensive even though it has less torque and speed than the 3004.