8411 conversion to SA

[vicenterc at comcast.net]

Bob,
Yes, I have seen and felt the slop on ground. However, with this type of digital servos I can NOT feel any difference when fly.  My point is:  If I can not feel any difference why we need to change the gears?  Probably the reason is that are digital servos and the servo can compensate so fast to the slop that normal human "precision" can not feel any change.  It will be interesting to get the JR engineers opinion in this regard or the JR Team pilots.
Vicente
-------------- Original message -------------- 

Vicente, the metal gear servos develop slop in the gear train almost immediately, worsens through the first 50 flights, and stays SLOPPY. That's why most of us change the metal gears to the nylon, and the same reason JR offers the 8411 and 9411 WITH "nylon gears", as the SA versions.
ON every 8411 I've changed, I have immediately noticed the slop GONE. It is worth it.

Bob Pastorello
rcaerobob at cox.net
www.rcaerobats.net
----- Original Message ----- 
From: vicenterc at comcast.net 
To: discussion at nsrca.org ; discussion at nsrca.org 
Cc: Troy Newman 
Sent: Wednesday, July 28, 2004 6:03 PM
Subject: Re: 8411 conversion to SA


I have a question in regard the conversion from metal to nylon gears. I have two planes one is older. Both with 8411 and 9411 metal gears. When I flew the new one with new servos I could not feel any difference in the air compared with the old plane. The new plane didn't not have any noticiable slop. Now both have develop some slop and looks like the slop does not change with time. I can feel the slop with my hands but I can not feel it in the air. Both planes are flying great. Are you guys having the same experience? if yes, why we need to replace the gears?
Please don't tell me that I am too old to feel the difference. I know that the first problem you notice is that trim changes continuosly. Unfortunetely, this could be true since I am more than 50 forever. 
Vicente Bortone
-------------- Original message -------------- 

> JRPS8411SAC 
> 
> This is leaving the metal output gear in place. I choose to do this on all 
> my servos I convert. I like the Metal Output gear as it gives better 
> connection to the aluminum Servo Arms I use. I know some have chosen to 
> replace the output with a plastic one, either way works...But the 8411SA 
> Conversion kit doesn't include the output gear just the internal gears 
> needed and a new face plate. 
> 
> The gears are actually from an 8101, 8231 gear set This is where you get the 
> nylon output gear if you choose it.....Like I said I don't, the nylon output 
> gears have more flex than the metal ones and I prefer to use a machine screw 
> with blue thread locker as opposed to the self tapping screw. 
> 
> Enjoy, 
> 
> Troy 
> ----- Original Message ----- 
> From: "gabrielg74" 
> To: 
> Sent: Wednesday, July 28, 2004 12:56 PM 
> Subject: 8411 conversion to SA 
> 
> 
> > I have several 8411 servos becoming sloppy, I would like to convert them 
> to plastic gears, can anybody tell me what is the replacement set (part 
> number) to convert a metal 8411 to SA?, and where to get it? 
> > 
> > Thanks, 
> > 
> > Gabriel 
> > 
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