[NSRCA-discussion] Servicing Servos

[Dave]

For a good soft mounted 2C glow setup -

9411sa aileron ~200 flights, change pots and gears

841sa rudder ~200 flights, change pots and gears

8417sa elevator (single with pushrod), or pair of 3421sa / 3517 nylon in the
tail ~400 flights, change pots and gears

 

For a good soft mounted 4C setup...expect to change pots and gears twice as
often.

 

For a good electric setup...figure about 300 flights ail/rud, and 500
flights for elev.

 

And by good setup, I mean linkages with no slop, ATVs/endpoints running ~
130% (150% is max for JR), and lightweight control surfaces that do not have
resonance issues at any particular throttle settings, and softmounts that do
not resonate at any particular throttle setting.  "Bad" setups can rapidly
increase wear on servos, and kill them in very short order.  When I ran
glow, I never allowed my engine to idle super slow for than a second or two
on the ground (after it was properly setup) because of the vibration that
occurs with the vast majority of setups when the idle gets low enough.

 

AND.I would add that it is not just geartrain slop and poor centering that
are signs of aging servos.  Very often before the centers go, the endpoints
will start to vary.this is another sign of wear on the pots, and while not
easy to notice (because it is a gradual change) on rudder and elevator,
endpoints can change enough to throw off aileron differential.

 

Regards,

 

Dave Lockhart

Team Horizon / JR / Spektrum

 

 

 

  _____  

From: nsrca-discussion-bounces at lists.nsrca.org
[mailto:nsrca-discussion-bounces at lists.nsrca.org] On Behalf Of Atwood, Mark
Sent: Monday, May 17, 2010 1:28 PM
To: General pattern discussion
Subject: Re: [NSRCA-discussion] Servicing Servos

 

I assume the number changes for Glow vs Electric?  If so, is that 100-200
typical for Glow or E?  And what should we expect from the other?

 

-Mark

 

Mark Atwood

Paragon Consulting, Inc.  |  President

5885 Landerbrook Drive Suite 130, Cleveland Ohio, 44124 

Phone: 440.684.3101 x102  |  Fax: 440.684.3102

 <mailto:mark.atwood at paragon-inc.com> mark.atwood at paragon-inc.com  |
<http://www.paragon-inc.com/> www.paragon-inc.com

 

From: nsrca-discussion-bounces at lists.nsrca.org
[mailto:nsrca-discussion-bounces at lists.nsrca.org] On Behalf Of colin
chariandy
Sent: Monday, May 17, 2010 1:26 PM
To: General pattern discussion
Subject: Re: [NSRCA-discussion] Servicing Servos

 


Thanks Tony.

 

Is the Pot replacement the only work needed to recover the performance and
give another 100-200 flights?

 

Colin

--- On Mon, 5/17/10, Tony <tony at radiosouthrc.com> wrote:


From: Tony <tony at radiosouthrc.com>
Subject: Re: [NSRCA-discussion] Servicing Servos
To: "'General pattern discussion'" <nsrca-discussion at lists.nsrca.org>
Received: Monday, May 17, 2010, 12:44 PM

Colin:
I do a lot of competition pattern servos here at Radio South.  Most of the
time, you will be able to get 100-200 flights on servos, however there are
some that say they can feel degradation of centering in as few a 30 flights.
Most of the time, replacing a pot will cost you around $20 per servo.

 

 

Tony Stillman, President

Radio South, Inc.

139 Altama Connector, Box 322

Brunswick, GA   31525

1-800-962-7802

www.radiosouthrc.com

  _____  

From: nsrca-discussion-bounces at lists.nsrca.org
[mailto:nsrca-discussion-bounces at lists.nsrca.org] On Behalf Of colin
chariandy
Sent: Monday, May 17, 2010 12:12 PM
To: NSRCA Mailing List
Subject: [NSRCA-discussion] Servicing Servos

 


Generally, are people servicing their servos? How often (for glow powered
airplanes) and does the service correct chatter about the centre?

 

Where is a good place to send Futaba Servos and what's the typical cost and
turn around time?

 

Thanks

Colin.

 


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