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<DIV>In the case of the large Castle ESCs without BEC, the ESC is far more sensitive to noise/interference and will cut the throttle long before a PCM RX goes into hold or failsafe.</DIV>
<DIV> </DIV>
<DIV>For the small stuff w/ BECs, it is always a good idea to plug a whattmeter into the system to check current draw of the servos - there are substantial differences in current draw and efficiency of the little servos. 4 of brand "Q" may provide better performance (more torque and speed) at less current draw than 4 (or even 3) of brand "Z". And as the servos wear, they may increase current consumption as well - so periodic checks are a good idea if you are running the BEC near capacity.</DIV>
<DIV> </DIV>
<DIV>Regards,</DIV>
<DIV><BR>Dave Lockhart</DIV>
<DIV><A href="mailto:DaveL322@comcast.net">DaveL322@comcast.net</A></DIV>
<DIV>Team JR</DIV>
<DIV>Team Castle Creations</DIV>
<DIV> </DIV>
<BLOCKQUOTE style="PADDING-LEFT: 5px; MARGIN-LEFT: 5px; BORDER-LEFT: #1010ff 2px solid">-------------- Original message -------------- <BR>From: "Larry" <ledunn@centurytel.net> <BR><BR>> When the BEC causes the esc to shut down, its because the esc is over <BR>> heating. Normally it shuts down the whole works - including the throttle <BR>> channel - because the RX has no power. <BR>> <BR>> Did he have throttle control but no roll/pitch/yaw control or did the motor <BR>> just continue to run on its own? <BR>> <BR>> It could have been a case where the esc shut down power to the rx, but there <BR>> was a slight delay (1 to 3 seconds IIRC) before the power to the motor got <BR>> cut off. That's the way Castle (and several others) esc's usually work. When <BR>> the signal is lost from the rx throttle channel, the esc will wait a bit, <BR>> incase its just a glitch, then it shuts off the motor. <BR>> <BR>> Not all esc's have that feature th
o. <BR>> <BR>> You can test how your system responds to a loss of signal by starting the <BR>> plane at idle speed and turn off your tx. The motor should shut down after a <BR>> few seconds at most. <BR>> <BR>> This will be dependent on the RX as well - if your rx has failsafe <BR>> programming, the tx off test may give different results depending on how its <BR>> programmed and if it has a throttle failsafe setting. If the rx has a <BR>> throttle failsafe programmed - then the only way to test the esc is to <BR>> unplug the throttle lead while the motor is running. <BR>> <BR>> What servos was he running and what voltage was the pack and which esc? <BR>> <BR>> I have run 4 servos on 1.5 amp bec's for years and never had any issues. <BR>> <BR>> Larry <BR>> <BR>> <BR>> <BR>> ----- Original Message ----- <BR>> From: "Steven Maxwell" <PATTERNRULES@EARTHLINK.NET><BR>> To: "NSRCA Mailing List" <NSRCA-DISCUSSION@LISTS.NSRCA
.ORG><BR>> Sent: Tuesday, May 16, 2006 9:44 PM <BR>> Subject: Re: [NSRCA-discussion] Brio 10 <BR>> <BR>> <BR>> > We had a Prodigy go in a couple of weeks ago because of a 1.5 amp bec <BR>> > runner 4 servos had to send in for upgrade to the 3 amp, the weird thing <BR>> > is <BR>> > the motor kept runner just no control, you think esc design would cut the <BR>> > motor first for safety. <BR>> > <BR>> > Steven Maxwell <BR>> > <BR>> > <BR>> > <BR>> > <BR>> >> [Original Message] <BR>> >> From: Larry <LEDUNN@CENTURYTEL.NET><BR>> >> To: NSRCA Mailing List <NSRCA-DISCUSSION@LISTS.NSRCA.ORG><BR>> >> Date: 5/16/2006 10:22:33 PM <BR>> >> Subject: Re: [NSRCA-discussion] Brio 10 <BR>> >> <BR>> >> There is a ton of info in this very long thread on RC Groups about the <BR>> > Brio. <BR>> >> Lots of details on several different motor setups, s
ervos front vrs back <BR>> >> etc. Actual building info starts on about page 5 or so IIRC. <BR>> >> <BR>> >> http://www.rcgroups.com/forums/showthread.php?t=483149&pp=15 <BR>> >> <BR>> >> I would not do 5 servos. It will add extra weight and you run a very good <BR>> >> chance of over heating the BEC in your esc. You could use a separate BEC, <BR>> >> but that adds weight too. <BR>> >> <BR>> >> Cutting the rear of the fuse is no big deal. It works fine. <BR>> >> <BR>> >> DO tape the canopy on when flying or do one of the canopy latch mods in <BR>> > the <BR>> >> thread. It will come off in flight if you don't. The gear axles are very <BR>> >> soft and bend easily, I would replace them - especially if flying off <BR>> > grass. <BR>> >> <BR>> >> With the 480 up front, you might be able to get a good cg with the servo <BR>> > in <
BR>> >> the front, but in the rear seems to work better for most people. <BR>> >> <BR>> >> As someone else reported, the one I assembled came with almost ALL parts <BR>> >> warped. It took a good bit of work with the iron to get it straight. <BR>> >> <BR>> >> Mine came in at 31.2oz or so with a geared inrunner setup. Flys well <BR>> > enough, <BR>> >> tracks well. Tends to snap out in a hard pull. Knifes well. 3D is just <BR>> > OK. <BR>> >> Wants to land with some speed. Does not fly like a big plane. <BR>> >> <BR>> >> Hope that helps. <BR>> >> <BR>> >> Larry <BR>> >> <BR>> >> <BR>> >> ----- Original Message ----- <BR>> >> From: "Eddie Batchelor" <PERKINSRX@CENTURYTEL.NET><BR>> >> To: "'NSRCA Mailing List'" <NSRCA-DISCUSSION@LISTS.NSRCA.ORG><BR>> >> Sent: Tuesday, May 16, 2006 10:17 AM <BR>> >> Subjec
t: Re: [NSRCA-discussion] Brio 10 <BR>> >> <BR>> >> <BR>> >> > Richard ( or anyone else with info on the Brio 10) <BR>> >> > Just started looking at it. I don't like the stock elevator setup. <BR>> > Could I <BR>> >> > split the elevator halves with 2 servos. I don't like the stock <BR>> >> > instructions <BR>> >> > to cut the fuse rear for installation of stab/elevator and I hope to <BR>> >> > eliminate that step. <BR>> >> > <BR>> >> > How is the weight with the 480 setup. I'm wondering if an extra servo <BR>> >> > on <BR>> >> > elevator would balance out ok, not be too heavy overall, and not be too <BR>> >> > much <BR>> >> > load on the BEC. After all with p-p rudder the extra hole is already in <BR>> >> > the <BR>> >> > fuse for 2 elevator servos. Yeah I know it is intended as an optional <
BR>> >> > rudder <BR>> >> > servo location, just wondering could 5 servos work. <BR>> >> > <BR>> >> > Thanks in advance for any input/advice <BR>> >> > I've got a lot to learn. <BR>> >> > Eddie <BR>> >> > <BR>> >> > -----Original Message----- <BR>> >> > From: nsrca-discussion-bounces@lists.nsrca.org <BR>> >> > [mailto:nsrca-discussion-bounces@lists.nsrca.org] On Behalf Of Richard <BR>> >> > Strickland <BR>> >> > Sent: Tuesday, May 16, 2006 11:01 AM <BR>> >> > To: nsrca-discussion@lists.nsrca.org <BR>> >> > Subject: [NSRCA-discussion] Brio 10 <BR>> >> > <BR>> >> > Finally got a couple flights with a 480 outrunner (weather has sucked). <BR>> > I <BR>> >> > think it'll be OK with some trimming and prop experimenting. But one <BR>> >> > item-it screwed off on hard pul
ls and pushes. The elevator halve <BR>> >> > connection/joiner could stand some reinforcement as it is driven from <BR>> > one <BR>> >> > side and allows some flex that needs to be reduced or eliminated. <BR>> > Easier <BR>> >> > to <BR>> >> > correct b/4 ass'y. <BR>> >> > <BR>> >> > RS <BR>> >> > <BR>> >> > <BR>> >> > _______________________________________________ <BR>> >> > NSRCA-discussion mailing list <BR>> >> > NSRCA-discussion@lists.nsrca.org <BR>> >> > http://lists.nsrca.org/mailman/listinfo/nsrca-discussion <BR>> >> > <BR>> >> > <BR>> >> > _______________________________________________ <BR>> >> > NSRCA-discussion mailing list <BR>> >> > NSRCA-discussion@lists.nsrca.org <BR>> >> > http://lists.nsrca.org/mailman/listinfo/nsrca-discussion <BR>> >
;> > <BR>> >> <BR>> >> _______________________________________________ <BR>> >> NSRCA-discussion mailing list <BR>> >> NSRCA-discussion@lists.nsrca.org <BR>> >> http://lists.nsrca.org/mailman/listinfo/nsrca-discussion <BR>> > <BR>> > <BR>> > _______________________________________________ <BR>> > NSRCA-discussion mailing list <BR>> > NSRCA-discussion@lists.nsrca.org <BR>> > http://lists.nsrca.org/mailman/listinfo/nsrca-discussion <BR>> > <BR>> <BR>> _______________________________________________ <BR>> NSRCA-discussion mailing list <BR>> NSRCA-discussion@lists.nsrca.org <BR>> http://lists.nsrca.org/mailman/listinfo/nsrca-discussion </BLOCKQUOTE></body></html>