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HeliHobby . Ron’s HeliProz South . Century Helicopter

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Beginners Corner > Spektrum DS821
 
 
ZAC ATTACK
Veteran
Location: Hamilton Ontario, CANADA

DS821 is junk.Its that simple!!

MAAC#77677 Medicated daily for your protection
08-07-2008 09:44 PM
 
 
the Wasp
rrProfessor
Location: Vt

BarracudaHockey, what color were the splines, white or gray,,

another thing the throttle only need about 1 oz of torque..

Jim
Buzz Buzz Buzz
08-07-2008 10:06 PM
 
 
video232
Heliman
Location: St Joseph Mo

OK alot of input in this matter....looks like these servos will not be goiing into this heli.....how about JR servos which ones would be good to use......and if ur crazy Dave please dont respond on what you would use....lol
08-08-2008 02:34 AM
 
 
the Wasp
rrProfessor
Location: Vt

here is my friend's reply after I sent him a link to this thread,,

""Jim,
Don't know what all the fuss is about. It may be that you shouldn't use them in 50 size or bigger helis, I just haven't heard about it. I've been using them in my Shuttle Plus with an OS 37 for two years now with no problems. Also, if it is true that the 821 uses the same gear train as the 8101, why would the 821 break gears when the 8101 is recomended for use in 60 size helis ?
Later,""

Jim
Buzz Buzz Buzz
08-08-2008 07:56 AM
 
 
jester4
Key Veteran
Location: Brampton, Ontario

Any time a manufacturer steps up and issues a bulletin about a servo NOT being used in a certain application....I'd listen



NO SOUP FOR YOU!!
08-08-2008 01:36 PM
 
 
del19_82
Heliman
Location: Glasgow, Scotland

http://www.spektrumrc.com/Products/...?ProdID=SPM3702

Link to the DS821 page on the Spektrum website, which states upto 30 size nitro & 50 size electric

www.waterfoothelis.com
08-08-2008 03:02 PM
HOMEPAGE  
 
 
BarracudaHockey
rrMaster
Location: Orange Park FL

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.


AMA 77227
http://www.jaxrc.com
08-08-2008 03:29 PM
 
 
the Wasp
rrProfessor
Location: Vt

thanks for the link,,

I can't see there beaing a problem using it on the throttle,, but you never know..

Jim
Buzz Buzz Buzz
08-08-2008 07:43 PM
 
 
emag remrofni
Key Veteran
Location: Los Angeles California

Quote 
I can't see there beaing a problem using it on the throttle,, but you never know..

As was stated earlier, its not the load on the servo, its the vibrations.

**Compass Models**
I don't fly a turd no more!!
08-08-2008 08:01 PM
 
 
the Wasp
rrProfessor
Location: Vt

I can't believe a 50 vibrates more than a 30, the larger the engine the less they vibrate..

Jim
Buzz Buzz Buzz
08-08-2008 09:13 PM
 
 
emag remrofni
Key Veteran
Location: Los Angeles California

Quote 
I can't believe a 50 vibrates more than a 30, the larger the engine the less they vibrate..

There is no logic in that statement.

**Compass Models**
I don't fly a turd no more!!
08-08-2008 09:19 PM
 
 
jester4
Key Veteran
Location: Brampton, Ontario

http://runryder.com/helicopter/t437...=ds821+throttle

Wasp,
Just one example after a couple of seconds of searching, there are more.....

NO SOUP FOR YOU!!
08-08-2008 09:42 PM
 
 
ZAC ATTACK
Veteran
Location: Hamilton Ontario, CANADA

The problem aswell with these servos is they come in a otional package with the x9303! You would think that a high-end transmitter would come with desent servos!Lots of guys install them,then,well youve heard what they do!

MAAC#77677 Medicated daily for your protection
08-08-2008 09:49 PM
 
 
Blade_Master1
Key Veteran
Location: Canada

I like the Hitec HS5625 MG, great torque, good speed, low power consumption.
did I mention affordable

JM2C's :)
08-09-2008 02:25 AM
 
 
naked painter
Senior Heliman
Location: Mid glamorgan uk

Why buy a radio set with 4 servos you can't use?
08-11-2008 07:49 AM
 
 
BarracudaHockey
rrMaster
Location: Orange Park FL

Some vendors sell it without servos, others get it with the servos and sell them for 50 or 60 bucks (thats about the going price)


AMA 77227
http://www.jaxrc.com
08-11-2008 12:54 PM
 
 
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Beginners Corner > Spektrum DS821
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