[NSRCA-discussion] Brio 10

Wed May 17 04:23:52 AKDT 2006

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
>
>
>
>
>> [Original Message]
>> From: Larry <ledunn at centurytel.net>
>> To: NSRCA Mailing List <nsrca-discussion at lists.nsrca.org>
>> Date: 5/16/2006 10:22:33 PM
>> Subject: Re: [NSRCA-discussion] Brio 10
>>
>> There is a ton of info in this very long thread on RC Groups about the
> Brio.
>> Lots of details on several different motor setups, servos front vrs back
>> etc. Actual building info starts on about page 5 or so IIRC.
>>
>> http://www.rcgroups.com/forums/showthread.php?t=483149&pp=15
>>
>> I would not do 5 servos. It will add extra weight and you run a very good
>> chance of over heating the BEC in your esc. You could use a separate BEC,
>> but that adds weight too.
>>
>> Cutting the rear of the fuse is no big deal. It works fine.
>>
>> DO tape the canopy on when flying or do one of the canopy latch mods in
> the
>> thread. It will come off in flight if you don't. The gear axles are very
>> soft and bend easily, I would replace them - especially if flying off
> grass.
>>
>> With the 480 up front, you might be able to get a good cg with the servo
> in
>> the front, but in the rear seems to work better for most people.
>>
>> As someone else reported, the one I assembled came with almost ALL parts
>> warped. It took a good bit of work with the iron to get it straight.
>>
>> Mine came in at 31.2oz or so with a geared inrunner setup. Flys well
> enough,
>> tracks well. Tends to snap out in a hard pull. Knifes well. 3D is just
> OK.
>> Wants to land with some speed. Does not fly like a big plane.
>>
>> Hope that helps.
>>
>> Larry
>>
>>
>> ----- Original Message ----- 
>> From: "Eddie Batchelor" <perkinsrx at centurytel.net>
>> To: "'NSRCA Mailing List'" <nsrca-discussion at lists.nsrca.org>
>> Sent: Tuesday, May 16, 2006 10:17 AM
>> Subject: Re: [NSRCA-discussion] Brio 10
>>
>>
>> > Richard   ( or anyone else with info on the Brio 10)
>> > Just started looking at it. I don't like the stock elevator setup.
> Could I
>> > split the elevator halves with 2 servos. I don't like the stock
>> > instructions
>> > to cut the fuse rear for installation of stab/elevator and I hope to
>> > eliminate that step.
>> >
>> > How is the weight with the 480 setup. I'm wondering if an extra servo 
>> > on
>> > elevator would balance out ok, not be too heavy overall, and not be too
>> > much
>> > load on the BEC. After all with p-p rudder the extra hole is already in
>> > the
>> > fuse for 2 elevator servos. Yeah I know it is intended as an optional
>> > rudder
>> > servo location, just wondering could 5 servos work.
>> >
>> > Thanks in advance for any input/advice
>> > I've got a lot to learn.
>> > Eddie
>> >
>> > -----Original Message-----
>> > From: nsrca-discussion-bounces at lists.nsrca.org
>> > [mailto:nsrca-discussion-bounces at lists.nsrca.org] On Behalf Of Richard
>> > Strickland
>> > Sent: Tuesday, May 16, 2006 11:01 AM
>> > To: nsrca-discussion at lists.nsrca.org
>> > Subject: [NSRCA-discussion] Brio 10
>> >
>> > Finally got a couple flights with a 480 outrunner (weather has sucked).
> I
>> > think it'll be OK with some trimming and prop experimenting.  But one
>> > item-it screwed off on hard pulls and pushes.  The elevator halve
>> > connection/joiner could stand some reinforcement as it is driven from
> one
>> > side and allows some flex that needs to be reduced or eliminated.
> Easier
>> > to
>> > correct b/4 ass'y.
>> >
>> > RS
>> >
>> >
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>> >
>> >
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