View Single Post
Old 04-10-2008, 05:46 PM   #5
cjcyclesrc
Bad-ass Super Contributer!
 
cjcyclesrc's Avatar
 
Join Date: Sep 2006
Location: United States, NC, Winston-Salem
Age: 30
Posts: 3,411
Default Re: JR X9303 with or without 72 oz/in DS821 digital servos?

Quote: Originally Posted by krayzc
View Post
does the heli put to many vibs on those deals....? i am a plane guy so this is for education purposes only!

Yes. I have seen Raptor 50's flown without a problem with Hitec HS 425's and Futaba 3004's. The 821 I saw fail was on a friends helicopter. He wasn't 3d'ing the Heli just some loops and rolls. It was a problem with the electronics not being able to stand up to the vibs. The Servo's had just hit the market and was recommended by the LHS. He replaced them all with Futaba 9252's.

Here is what Horizon says about it. Link

Quote:
Tech Notes
Quote:
The DS821 servo is a powerful, accurate sport digital servo recommended for RC airplane applications up to 1.20-size. For helicopters, the DS821 operates best with 30-size glow models, and up to 50-size electric. Loads and vibration in larger models may cause premature failure of the servo resulting in damage or injury to property and persons.
__________________
Charles
Fly Extreme! Extreme Flight RC
WrongWay RC
cjcyclesrc is offline   Reply With Quote