[NSRCA-discussion] Servos suggestions for a 90 size patternplane

[J N Hiller]

Mike I agree that we are probably stronger / more expensive servos than most
of us needed.
What's really needed is a tight servo that returns to center from either
direction. I'm not familiar with JR stuff I still use Futaba and kind of
like their standard torque S-3151 and high torque S-3152 digital servos,
both in the $30 - $35 range. I don't think I would notice the difference
between these and $100+ servos. As for torque, set up the linkage to use
full travel (100 - 120%) on both aileron and elevator which gives near
maximum torque amplification converting 40+ degrees of servo rotation to 7 -
9 degrees aileron deflection and unless you are flying snaps or spins 10 -
14 elevator control surface deflection. Many will likely disagree with what
I've said and that's OK.
How many of us really get our money's worth using the latest and greatest.
Jim Hiller

-----Original Message-----
From: nsrca-discussion-bounces at lists.nsrca.org
[mailto:nsrca-discussion-bounces at lists.nsrca.org]On Behalf Of mike mueller
Sent: Friday, June 12, 2009 6:55 AM
To: General pattern discussion
Subject: Re: [NSRCA-discussion] Servos suggestions for a 90 size
patternplane


 Not to be argumentative but I think the 8411 is overkill on a 90 sized
plane thus the 8231 reccomondation on rudder. It's cheaper especially used
($35) and it has the SA like gear train. I think that we are using larger
than needed servos in most of our planes. But hey it's just my opinion and I
could be wrong. Mike

--- On Fri, 6/12/09, Jon Lowe <jonlowe at aol.com> wrote:

> From: Jon Lowe <jonlowe at aol.com>
> Subject: Re: [NSRCA-discussion] Servos suggestions for a 90 size pattern
plane
> To: nsrca-discussion at lists.nsrca.org
> Date: Friday, June 12, 2009, 8:03 AM
> JR  (or Spektrum) DS821 on
> everything except rudder, and something like a DS8411SA on
> rudder.  The DS821's are very precise, almost zero
> deadband, have about 72 oz-in of torque @ 4.8v, 88 @ 6v,
> carbonite gears and only cost about $30 US. Amazing servo
> for the money.  I've seen them on several 2 meter
> planes.  I've checked Hitec's and Futaba's offerings at
> this price point, and they either lack the torque, the speed
> or both.   I'd run on 6 volts for a little
> extra speed and torque.  The 8411 has the extra power
> you need on rudder.
>
> And no, I'm not sponsored by JR!
>
>
> Jon Lowe
>
>
> -----Original Message-----
> From: Dean & Melissa Williams <DMWILLIAMS at bigpond.com>
> To: nsrca-discussion at lists.nsrca.org
> Sent: Fri, Jun 12, 2009 7:40 am
> Subject: [NSRCA-discussion] Servos suggestions for a 90
> size pattern plane
>
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> Hi
>
>
> Which servos (brand and #) would you use for a 90
> size pattern plane like the ESM Adrenaline 90 and which
> ones on what surfaces
> ?
>
>
> Thanking you for your sugestions
>
>
>
> Dean (Outback OZ)
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