[NSRCA-discussion] MG Servos to use

[Dave]

Hi Vince,

 

I think the servos you listed are fine.

 

The plane belongs to a friend of mine (Lee Morey), and he is using an Eflite
Power 160 which is doing a nice job.  I think the Scorpion F3A will do well
also, but from some of the data posted on the RCG thread for the EF 78"
Extra, it sounds like the motor might spin up pretty good and draw a lot of
amps on typical pattern props.  I'd start with something lighter..like a
20x11 or thereabouts.

 

Regards,

 

Dave 

 

  _____  

From: nsrca-discussion-bounces at lists.nsrca.org
[mailto:nsrca-discussion-bounces at lists.nsrca.org] On Behalf Of Vicente
"Vince" Bortone
Sent: Monday, March 29, 2010 9:57 PM
To: General pattern discussion
Subject: Re: [NSRCA-discussion] MG Servos to use

 

Dave,

 

What motor are you using?  I am building one.  I am planing to use 9411 on
elevators (max ~20-25 degrees).  8411 on ailerons (max 15-20 degrees) and
8611 on rudder  (max ~35-40) degrees.  Using the Scorpion F3A motor.   I
think I should be fine with this set up for IMAC.  Any suggestions welcome.


Vicente "Vince" Bortone

----- Original Message -----
From: "Dave" <DaveL322 at comcast.net>
To: "General pattern discussion" <nsrca-discussion at lists.nsrca.org>
Sent: Monday, March 29, 2010 10:00:32 AM GMT -06:00 US/Canada Central
Subject: Re: [NSRCA-discussion] MG Servos to use

Matt,

 

I put a little bit of flight time on an EF 78" Extra electric 2 weekends ago
(It has 8711 HVs running on unregulated 5 cell Nimh - so figure 400 oz/in
and 0.15 sec - definitely overkill).  My personal opinion is that 100 oz/in
of digital torque is fine for elevator (2 servos), but more like 150 oz for
ailerons (2 servos) and 200 oz for rudder, especially if you are going to
have 3D throws.

 

Spektrum has some relatively new servos -

6010 is $40, metal gear, 100 oz/in, 0.14 sec

6030 is $85, titanium gear, 278, 0.15 sec

6040 is $80, titanium gear, 167, 0.08 sec

 

I used some of the 821 "standard" servos (composite gear, 88, 0.15) on the
ailerons of my 120 mph Sundowner and they are solid (not fast, but solid).

 

I've been flying a 65" Vyper from 3DHobby, and the first few flights were
with JR 8717 on the ailerons, and then some JR 8411sa's, and now I have some
Spektrum 6030s to try (next time the weather clears).  The 8717s draw a lot
of current, but have absolutely stunning performance - very stable roll
trim, smooth response for pattern stuff, and very positive/crisp for snaps
and 3D work (and yes, pricey at $140, but I think an example of getting more
performance for more $$$).

 

 Regards,

 

Dave Lockhart

Team Horizon/JR/Spektrum

 

  _____  

From: nsrca-discussion-bounces at lists.nsrca.org
[mailto:nsrca-discussion-bounces at lists.nsrca.org] On Behalf Of
rcmaster199 at aol.com
Sent: Monday, March 29, 2010 10:20 AM
To: nsrca-discussion at lists.nsrca.org
Subject: [NSRCA-discussion] MG Servos to use

 


Hey folks,

 

I need some MG Digital Servos to use on the 78" Xtra. These need to have at
least 100 in-ozs of torque and I prefer at least 0.15 sec transits. I've
looked at Airtronics and JR.....For cored servos prices are not too bad but
for coreless, prices are too high. I prefer coreless. 

 

Would someone with experience with the other brands shed some light on this?
I'd like reasonably priced (50-70$ as opposed to 120$), metal geared servos
with torque and speed shown above. I started to look at Hitec but I
understand these need some kind of programmer!? The need is 4 at about 100
in-ozs and 1 at about 170 in-ozs

 

Thanks

 

Matt Kebabjian


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