Servos

[Bill Glaze]

Troy:
Didn't read far enough before my first reply:
A write-up for the K-Factor would be a big plus.  It's one of the few 
'zines I read from cover to cover, because it targets my particular 
interest.  The other mags are just a little too general for my taste, 
save, perhaps, Model Aviation, where I can read advertisements for 
upcoming contests!  As well as, of course, what AMA says it's doing.
Bill Glaze

Troy Newman wrote:

> Bill,
>  
>  I have a spread sheet that has all the specs. Some of the Servos are 
> no longer available from the old days. It shows a comparison on the 
> specs as the servos evolved....but I can send you the sheet offlist as 
> a reference.
>  
>  
> Central might have some of the 9411SA's in stock as an actual part 
> number from the factory..... I have not checked with them in a few 
> weeks....but They usually get this kind of stuff right way. I know the 
> 9411SA as a day one servo is out in hobby shops. It's a cool deal with 
> the servos about $5 cheaper and no work to convert them day 1. Also 
> the 3421SA's have been around for a couple months I think.
>  
> Another note for all you guys with worn 9411 gears. JR service will 
> replace the gears for at N/C if they are sloppy due to normal use. You 
> might ask about converting to the SA for you. They are already 
> sticking gears in it...and the result would be a less expensive gear 
> change for them. I don't know the rules they have to follow....but it 
> never hurts to ask. I have found the techs to be more than willing to 
> serve your needs.
>  
> By the way I am using standard 9411's in my Flashdance on the 
> elevators. The reason is the huge 3D surfaces. The stock gears work 
> fine...they just develop a little more slop quicker than the nylon 
> converts. I was concerned about a really hard wall or Pop up and these 
> huge elevator surfaces driving the servo instead of the other way around.
>  
> I would be happy to write up something for the KF regarding the 
> conversions many of us are doing.
>  
> Troy
>
>     ----- Original Message -----
>     From: Bill Glaze <mailto:billglaze at triad.rr.com>
>     To: discussion at nsrca.org <mailto:discussion at nsrca.org>
>     Sent: Wednesday, February 04, 2004 10:10 AM
>     Subject: Re: Servos
>
>     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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