[NSRCA-discussion] Brio 10

Wed May 17 08:06:37 AKDT 2006

But if you are pulling 29 to 39 amps with the motor and 3+ amps on the BEC
you are above spec.  With electrics the only way to be in the ball park is
motocalc or programs like it.  Then to verify a watt meter to read real
world stats.

I myself never trust running in the "Burst" range either with my batteries
or my electronics.  If you had an older version Phoenix they were only rated
for 3 servos.

I do have to agree that the over limit should have caught it and shut the
motor down.  From my understanding Castle is very good to deal with.

Michael

-----Original Message-----
From: nsrca-discussion-bounces at lists.nsrca.org
[mailto:nsrca-discussion-bounces at lists.nsrca.org] On Behalf Of Dean Funk
Sent: Wednesday, May 17, 2006 7:47 AM
To: NSRCA Mailing List
Subject: Re: [NSRCA-discussion] Brio 10

I agree with Jay,

I was using a smaller motor with the storm, a very reputable electric flight
hobbyshop sold me all this stuff and justified it with the same "25A
continuous and 35A surge" statement.... saying I should be fine and go fly
it...  NOT

I don't think it's the hobbyshops fault as we both read the specs and
thought it was a good set-up- 

regardless - it's all history now..... and maybe a lesson learned on my
end... 

I got a waste can full on these little planes ; )

--- Jay Marshall <lightfoot at sc.rr.com> wrote:

> It is rated at 25A continuous and 35A surge. The programming 
> instructions says that the "Current Limiting" at the standard setup 
> (used) will provide "moderate over-current threshold, will shut down 
> after a slight delay". The issue may be what is shut down. If it is 
> just the motor, then good. If, however, it is the motor and BEC then 
> very bad! In any case, I wouldn't expect any overheating with this 
> protection enabled to the extent that it would melt the solder on the 
> ICs.
> 
> -----Original Message-----
> From: nsrca-discussion-bounces at lists.nsrca.org
> [mailto:nsrca-discussion-bounces at lists.nsrca.org] On Behalf Of Michael 
> Laggis
> Sent: Wednesday, May 17, 2006 11:12 AM
> To: 'NSRCA Mailing List'
> Subject: Re: [NSRCA-discussion] Brio 10
> 
> What it sounds like to me is the Phoenix 25's are being used outside 
> of spec.  Following threads on RCGroups most of these setups for the 
> brio are pulling in the high 20's to high 30 amp range.  I believe 
> most would be better off with a 35 or 40 amp speed controller.
> 
> Michael
> 
> -----Original Message-----
> From: nsrca-discussion-bounces at lists.nsrca.org
> [mailto:nsrca-discussion-bounces at lists.nsrca.org] On Behalf Of Dean 
> Funk
> Sent: Wednesday, May 17, 2006 6:44 AM
> To: NSRCA Mailing List
> Subject: Re: [NSRCA-discussion] Brio 10
> 
> HI Jay,
> 
> I had the same situation with the Phoenix 25 in a Quiet Storm. Had 
> about 20 flights on it with no overheating and then on the last flight 
> the ESC unsoldered it's self. Same result - at first my brain said - 
> deadstick no problem - then I realized just how dead my "sticks"
> where. as it plowed
> in....
> 
> aggghhhh!
> 
> wondering if it's a manufacturing defect....
> 
> My little brio snap rolled to it's death this past saturday. I was 
> doing a stall turn with a easy pull up from the down leg.
> Nothing hard or sharp.  I
> was on low rates. I was just feeding in elevator while slowly 
> advancing the throttle. and whammm, a couple quick snaps to the right 
> and well, slamm....
> 
> I really feel like I have no luck with these little electrics. I am 
> thinking about selling all the electric junk - oh -  I mean stuff that 
> I own....
> Besides that they fly like small toy airplanes and I don't feel they 
> help me much as a practice pattern plane anyhow.
> 
> I get more out of Aerofly sim for practice.
> 
> good luck to anyone with the little Brio - lots of hype there. I was 
> really dispointed right from the first flight - not great performance 
> here - I had about 10 flights on her. and thought that the Quite Storm 
> was a much better plane that flew more like a bigger plane than the 
> little brio.
> 
> The Brio seems to fly like it's about 6 oz over weight even at 32 
> oz....
> 
> I guess I am going to put up a garage sale on RCU, I've got a couple 
> of Tourque outrunners, 45 amp Airboss ESC, a couple of 2100 packs and 
> charger,
> 8 micro servos etc....
> 
> 
> 
> 
> --- Jay Marshall <lightfoot at sc.rr.com> wrote:
> 
> > Lost my Brio 10. I was using a Castle Creation's
> Phoenix 25 ESC which
> > was programmed to 25A. Regardless, it overheated,
> the surface mount
> > integrated circuits became unsoldered, and the BEC
> shut down. I was in
> > the 3rd quarter of a loop. The rest is history.
> The motor was shut
> > down but a 90 down dive destroyed the front end
> anyway. I had flown it
> > three times before and checked the temp after each
> flight. It was
> > barely warm to the fingertip.
> > 
> > -----Original Message-----
> > From: nsrca-discussion-bounces at lists.nsrca.org
> > [mailto:nsrca-discussion-bounces at lists.nsrca.org]
> On Behalf Of Larry
> > Sent: Wednesday, May 17, 2006 1:09 AM
> > To: patternrules at earthlink.net; NSRCA Mailing List
> > Subject: Re: [NSRCA-discussion] Brio 10
> > 
> > When the BEC causes the esc to shut down, its
> because the esc is over
> > heating. Normally it shuts down the whole works -
> including the
> > throttle channel - because the RX has no power.
> > 
> > Did he have throttle control but no roll/pitch/yaw
> control or did the
> > motor just continue to run on its own?
> > 
> > It could have been a case where the esc shut down
> power to the rx, but
> > there
> > 
> > was a slight delay (1 to 3 seconds IIRC) before
> the power to the motor
> > got cut off. That's the way Castle (and several
> others) esc's usually
> > work. When
> > 
> > the signal is lost from the rx throttle channel,
> the esc will wait a
> > bit, incase its just a glitch, then it shuts off
> the motor.
> > 
> > Not all esc's have that feature tho.
> > 
> > You can test how your system responds to a loss of
> signal by starting
> > the plane at idle speed and turn off your tx. The
> motor should shut
> > down after a
> > 
> > few seconds at most.
> > 
> > This will be dependent on the RX as well - if your
> rx has failsafe
> > programming, the tx off test may give different
> results depending on
> > how its
> > 
> > programmed and if it has a throttle failsafe
> setting. If the rx has a
> > throttle failsafe programmed - then the only way
> to test the esc is to
> > unplug the throttle lead while the motor is
> running.
> > 
> > What servos was he running and what voltage was
> the pack and which
> > esc?
> > 
> > I have run 4 servos on 1.5 amp bec's for years and
> never had any
> > issues.
> > 
> > Larry
> > 
> > 
> > 
> > ----- Original Message -----
> > From: "Steven Maxwell"
> <patternrules at earthlink.net>
> > To: "NSRCA Mailing List"
> > <nsrca-discussion at lists.nsrca.org>
> > Sent: Tuesday, May 16, 2006 9:44 PM
> > Subject: Re: [NSRCA-discussion] Brio 10
> > 
> > 
> > > We had a Prodigy go in a couple of weeks ago
> > because of a 1.5 amp bec
> > > runner 4 servos had to send in for upgrade to
> the
> > 3 amp, the weird thing
> > > is
> > > the motor kept runner just no control, you think
> > esc design would cut the
> > > motor first for safety.
> > >
> > > Steven Maxwell
> 
=== message truncated ===

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