Servo question

[jim ivey]

John
I always count the number of guys I beat. I don't have to count so high.

Jim Ivey



jivey61 at msn.com





>From: "John Ferrell" <johnferrell at earthlink.net>
>Reply-To: discussion at nsrca.org
>To: <discussion at nsrca.org>
>Subject: Re: Servo question
>Date: Fri, 1 Aug 2003 11:33:06 -0400
>
>I discovered a long ways back it is much better for my self esteem count 
>the number of places from the bottom! Except, of course, when I am first!
>John Ferrell
>6241 Phillippi Rd
>Julian NC 27283
>Phone: (336)685-9606
>johnferrell at earthlink.net
>Dixie Competition Products
>NSRCA 479 AMA 4190  W8CCW
>"My Competition is Not My Enemy"
>
>   ----- Original Message -----
>   From: Gray E Fowler
>   To: discussion at nsrca.org
>   Sent: Friday, August 01, 2003 9:07 AM
>   Subject: RE: Servo question
>
>
>
>   Glen
>
>   I have never been able to really reproduce that coreless feel, yet with 
>more control due to digitals. I added more expo but all surfaces around 
>center are still more active. I rarely under roll, always over roll. Are 
>you saying that if I reduce the travel of the servo, yet keep the same 
>surface deflection that it gets more controllable? If this is the case I 
>should easily be able to move up from 22nd place to 21st...
>
>
>
>   Gray Fowler
>   Principal Chemical Engineer
>   Composites Engineering
>
>
>        Glen.Watson at aspentech.com
>         Sent by: discussion-request at nsrca.org
>         07/31/2003 03:59 PM
>         Please respond to discussion
>
>
>                 To:        discussion at nsrca.org
>                 cc:
>                 Subject:        RE: Servo question
>
>
>
>   Early this season I swapped my Futaba 9102 coreless wing servos for 9150 
>digitals.  As Gray mentions I first added more expo to reestablish feel.  
>With this added expo (mushiness) when doing points and slow rolls it was 
>difficult to maintain a consistent roll rate.  By decreasing travel volume 
>(9ZAP AFR) in addition to reducing relative expo, roll rate became more 
>controllable and predictable. I sense there is a relative amount of travel 
>volume + expo needed to overcome surface blow back with non-digitals to 
>achieve desired mushiness.
>
>
>   Switching to digital wing servos has greatly changed the rolling 
>characteristics for me in a positive way.  Rolls are crisper, more 
>predictable in all air speeds and stop-start with more authority.
>
>
>
>   Glen
>
>
>
>
>
>   -----Original Message-----
>   From: Gray E Fowler [mailto:gfowler at raytheon.com]
>   Sent: Thursday, July 31, 2003 3:04 PM
>   To: discussion at nsrca.org
>   Subject: Re: Servo question
>
>
>
>
>   What I noticed when switching to digitals was the need to add more 
>exponential. The coreless had a built in mushiness around center. Now I 
>program in the amount of mushiness I want. This probably means that once 
>you get used to a certain mushiness you would fly as well with or with 
>digitals.
>
>
>
>   Gray Fowler
>   Principal Chemical Engineer
>   Composites Engineering
>
>

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