Servos

[Henderson,Eric]

Keith,
       Thank you for including the link. i am not looking at the 8411 e series.

The two that I use are 9411's and 8311's. Both come with metal gears. I have seen a 9411(low profile digital) listed as an SA. But not the 8311. This probably because it is aimed at helicopters. It does work well on rudders and elevators in our planes.

-----Original Message-----
From: discussion-request at nsrca.org
[mailto:discussion-request at nsrca.org]On Behalf Of Keith Black
Sent: Wednesday, February 04, 2004 1:30 PM
To: discussion at nsrca.org
Subject: Re: Servos


Try this link for the 8411SA:

http://horizon.hobbyshopnow.com/products/description.asp?prod=JRPS8411SA

----- Original Message ----- 
From: "Henderson,Eric" <Eric.Henderson at gartner.com>
To: <discussion at nsrca.org>
Sent: Wednesday, February 04, 2004 10:27 AM
Subject: RE: Servos


This URL worked - it had 4 pages but did not show the 9411SA only the 9411.

BTW - a really good [pattern servo is the 8311 with nylon gears. It is
smoother than the 8411 and has a less sensitive center that translates into
longer pot life and a lot less dancing at center.

Regards,

Not sponsored Eric :-)



-----Original Message-----
From: discussion-request at nsrca.org
[mailto:discussion-request at nsrca.org]On Behalf Of Larry Caldwell
Sent: Wednesday, February 04, 2004 11:12 AM
To: discussion at nsrca.org
Subject: Re: Servos


http://horizon.hobbyshopnow.com/services/advanceresultsDetail.asp?strProd=&strSearchType=ALL&strInCategory=RPS&strInManufacturer=JRP

Larry

Bill Glaze wrote:

> Eric & All:
> What is the U.R.L. that Horizon is using for a complete servo listing?
> I've got one dialed in, but while it lists quite a few servos, it
> doesn't list anything in the 9000 series stuff at all.  Actually, it
> acts more like a hobby shop listing, than it does Horizon's official web
> site.  And, for some reason or other, Horizon's web site seems to have a
> security problem; must be the wrong site.  thanks.
>
> Bill Glaze
>
> Henderson,Eric wrote:
>
>> Nat,
>>        The 9411 has this weakness. It does not matter if it is an SA
>> version or not. I run them in ailerons only. The conversion set to
>> make a 9411 into a 9411SA are 9011 gears,
>>
>> Unfortunately if you spin up the servo arm by hand and let it hit the
>> "stops" anywhere near firmly, it strips the little gear next to the
>> motor. The motor keeps on going and does the damage. Both the metal
>> and plastic gear sets use the same last gear, which is plastic.
>>
>> I have never had an in-flight failure with this servo but it treat it
>> with care when it comes to moving the controls by hand. The wing bags
>> take care of the aileron servos.
>>
>> What is most annoying is that this is the only Digital low-profile
>> that they market over here.
>>
>> The 9011's that I use do not seem to be this vulnerable. My guess is
>> that this is due to the motor types and how fast/freely they move when
>> spun up by hand.
>>
>> Sorry, I didn't solve the problem but I can confirm it to be the
>> servo and not just you :-)
>>
>> Regards,
>>
>> Eric.
>>
>>
>> -----Original Message-----
>> From: discussion-request at nsrca.org
>> [mailto:discussion-request at nsrca.org]On Behalf Of Nat Penton
>> Sent: Tuesday, February 03, 2004 10:29 PM
>> To: discussion at nsrca.org
>> Subject: Servos
>>
>> I had two DS9411's coverted to SA . A gear , or gears, stripped in
>> both with relatively no torque by hand. They could have easily crashed
>> an airplane. Does  the stock SA have all plastic gears, or only one or
>> two ? These were converted to all plastic.
>

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