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</o:shapelayout></xml><![endif]--></head><body lang=EN-US link=blue vlink=purple><div class=WordSection1><p class=MsoNormal>Jerry,<o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>If you look at the data Castle provides for the ProBec, The amps it can supply clearly (and expectedly) drop as input volts increase and output voltage decreases, but I think there is still good overhead for a pattern plane airborne running at 8V and using ~100 mah per flight. Just my opinion, and perhaps Castle Tech support would be able to verify.<o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>I have a 10S 74” Extreme Flight Laser with aggressive servos and 3D throws and a pair of ProBecs (one for 2 aileron servos, one for 2 elev and 1 rud), and when in “pattern” mode, I use the brake and have never had a problem. Certainly a pattern plane is never going to approach the current demand the Laser has when flying 3D and XA.<o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>Regards,<o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>Dave<o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal><o:p> </o:p></p><div><div style='border:none;border-top:solid #E1E1E1 1.0pt;padding:3.0pt 0in 0in 0in'><p class=MsoNormal><b>From:</b> jerry@buddengineering.com <jerry@buddengineering.com> <br><b>Sent:</b> Friday, June 12, 2020 7:38 PM<br><b>To:</b> NSRCA-list List <nsrca-discussion@lists.nsrca.org><br><b>Cc:</b> Dave Lockhart <davel322@comcast.net><br><b>Subject:</b> Re: [NSRCA-discussion] 10S UBEC Question<o:p></o:p></p></div></div><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>Dave,<o:p></o:p></p><div><p class=MsoNormal><o:p> </o:p></p></div><div><p class=MsoNormal>Do you know why the specs state it can only support voltages over 10S for an airplane with the brake disabled? I’m assuming that’s because of the EMF back flow from the ESC into the batteries raises the voltage significantly when the brake engages, but maybe that’s only a problem when running 12s batteries?<o:p></o:p></p></div><div><p class=MsoNormal><o:p> </o:p></p></div><div><p class=MsoNormal>Jerry<o:p></o:p></p><div><p class=MsoNormal><br><br><o:p></o:p></p><blockquote style='margin-top:5.0pt;margin-bottom:5.0pt'><div><p class=MsoNormal>On Jun 12, 2020, at 4:20 PM, davel322 <<a href="mailto:davel322@comcast.net">davel322@comcast.net</a>> wrote:<o:p></o:p></p></div><p class=MsoNormal><o:p> </o:p></p><div><div><div><p class=MsoNormal><o:p> </o:p></p></div><div><p class=MsoNormal><a href="http://www.castlecreations.com/en/accessories-5/cc-bec-pro-010-0004-01">http://www.castlecreations.com/en/accessories-5/cc-bec-pro-010-0004-01</a><o:p></o:p></p></div><div><p class=MsoNormal><o:p> </o:p></p></div><div><p class=MsoNormal>Castle ProBec will do that easily.<o:p></o:p></p></div><div><p class=MsoNormal><o:p> </o:p></p></div><div><p class=MsoNormal><o:p> </o:p></p></div><div id="composer_signature"><div><p class=MsoNormal><span style='font-size:9.5pt;color:#575757'>Regards, <o:p></o:p></span></p></div><div><p class=MsoNormal><span style='font-size:9.5pt;color:#575757'><o:p> </o:p></span></p></div><div><p class=MsoNormal><span style='font-size:9.5pt;color:#575757'>Dave<o:p></o:p></span></p></div><div><p class=MsoNormal><span style='font-size:9.5pt;color:#575757'><o:p> </o:p></span></p></div><div><p class=MsoNormal><span style='font-size:9.5pt;color:#575757'>Sent from my Sprint Samsung Galaxy Note8.<o:p></o:p></span></p></div><div><p class=MsoNormal><span style='font-size:9.5pt;color:#575757'><o:p> </o:p></span></p></div><div><p class=MsoNormal><span style='font-size:9.5pt;color:#575757'>Apologies in advance for any typos undoubtedly introduced by auto correct and / or talk to text. <o:p></o:p></span></p></div></div><div><p class=MsoNormal><o:p> </o:p></p></div><div><p class=MsoNormal><o:p> </o:p></p></div><div><div><p class=MsoNormal>-------- Original message --------<o:p></o:p></p></div><div><p class=MsoNormal>From: jerry--- via NSRCA-discussion <<a href="mailto:nsrca-discussion@lists.nsrca.org">nsrca-discussion@lists.nsrca.org</a>> <o:p></o:p></p></div><div><p class=MsoNormal>Date: 6/12/20 18:41 (GMT-05:00) <o:p></o:p></p></div><div><p class=MsoNormal>To: NSRCA-list List <<a href="mailto:nsrca-discussion@lists.nsrca.org">nsrca-discussion@lists.nsrca.org</a>> <o:p></o:p></p></div><div><p class=MsoNormal>Subject: [NSRCA-discussion] 10S UBEC Question <o:p></o:p></p></div><div><p class=MsoNormal><o:p> </o:p></p></div></div><p class=MsoNormal>Does anyone know of a 10S UBEC that will output 8.2V and will handle HV (43.5V) packs? I found one for conventional 10s packs but it only outputs up to 6V.<br><br>I bought a pair of OS controllers to use with 2 OS belt drives I have but they don’t have BEC output. Obviously I could go with dual lipos but my preference is to use a BEC with one lipo pack.<br><br>Thx, Jerry<o:p></o:p></p></div></div></blockquote></div><p class=MsoNormal><img border=0 width=701 height=578 style='width:7.302in;height:6.0208in' id="_x0032_B7904AB-CC88-44E0-AB2D-28D0C1EFE00C" src="cid:image001.png@01D64161.09A7BFB0"><o:p></o:p></p></div></div></body></html>