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<DIV>George and everything except motor you'll have will work on a 2 meter if you deside to go that way.</DIV>
<DIV> Steve </DIV>
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<DIV> </DIV>
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<DIV style="FONT: 10pt Arial">----- Original Message ----- </DIV>
<DIV style="BACKGROUND: #e4e4e4; FONT: 10pt arial; font-color: black"><B>From:</B> <A title=glmiller3@cox.net href="mailto:glmiller3@cox.net">George Miller</A> </DIV>
<DIV style="FONT: 10pt arial"><B>To: </B><A title=nsrca-discussion@lists.nsrca.org href="mailto:nsrca-discussion@lists.nsrca.org">NSRCA Mailing List</A></DIV>
<DIV style="FONT: 10pt arial"><B>Sent:</B> 1/12/2006 10:44:38 PM </DIV>
<DIV style="FONT: 10pt arial"><B>Subject:</B> Re: [NSRCA-discussion] Electric Power Consumption</DIV>
<DIV><BR></DIV><FONT size=2>
<DIV><FONT face=Arial>H-L recommends the AXI 5320/28 with a 18X10 APC electric prop and the Jeti 90 amp controller for use with a 10S Lipo pack (two 5s in series in my case) Here is Justin's reply to me:</FONT></DIV>
<DIV><FONT face=Arial></FONT> </DIV>
<DIV>"This one will rock any 8-9 pound 90 sized 3d/pattern plane's world...and it uses your 5s4p packs in series for 10s:<BR>Here's everything you'll need to complete your Glow to Electric Conversion of the Fliton Infinity 90 (or the Showtime)<BR><BR>You'll be happy to hear that we actually already have a perfectly suited electric setup and charger ready as a combo. Order # FLTINF90, for $1299.00. You can see it on the web at <A href="">http://www.hobby-lobby.com/g2e-flitinfinity90.htm</A><BR><FONT face=Arial>"</FONT></DIV>
<DIV><FONT face=Arial>Here is the link to just the motor and some specs:</FONT></DIV>
<DIV><FONT face=Arial></FONT> </DIV>
<DIV><FONT face=Arial> <A href="http://www.hobby-lobby.com/brushless-axi5320.htm">http://www.hobby-lobby.com/brushless-axi5320.htm</A><BR></FONT></DIV>
<DIV><FONT face=Arial>I'll let you know how it flies in a week or so.</FONT></DIV>
<DIV><FONT face=Arial></FONT> </DIV>
<DIV><FONT face=Arial>George</DIV>
<DIV><BR></DIV></FONT>
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<DIV style="FONT: 10pt arial">----- Original Message ----- </DIV>
<DIV style="BACKGROUND: #e4e4e4; FONT: 10pt arial; font-color: black"><B>From:</B> <A title=patternrules@earthlink.net href="mailto:patternrules@earthlink.net">Steven Maxwell</A> </DIV>
<DIV style="FONT: 10pt arial"><B>To:</B> <A title=nsrca-discussion@lists.nsrca.org href="mailto:nsrca-discussion@lists.nsrca.org">NSRCA Mailing List</A> </DIV>
<DIV style="FONT: 10pt arial"><B>Sent:</B> Thursday, January 12, 2006 8:30 PM</DIV>
<DIV style="FONT: 10pt arial"><B>Subject:</B> Re: [NSRCA-discussion] Electric Power Consumption</DIV>
<DIV><BR></DIV>
<DIV>
<DIV> Very good of HL I'm happy for you. Could you give us more info on what motor and speed control so others could benefit from your experience, and please keep us updated on your progress.</DIV>
<DIV> Steve Maxwell</DIV>
<DIV> </DIV>
<DIV></DIV></DIV>
<DIV> </DIV>
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<DIV style="FONT: 10pt Arial">----- Original Message ----- </DIV>
<DIV style="BACKGROUND: #e4e4e4; FONT: 10pt arial; font-color: black"><B>From:</B> <A title=glmiller3@cox.net href="mailto:glmiller3@cox.net">George Miller</A> </DIV>
<DIV style="FONT: 10pt arial"><B>To: </B><A title=nsrca-discussion@lists.nsrca.org href="mailto:nsrca-discussion@lists.nsrca.org">NSRCA Mailing List</A></DIV>
<DIV style="FONT: 10pt arial"><B>Sent:</B> 1/12/2006 9:01:34 PM </DIV>
<DIV style="FONT: 10pt arial"><B>Subject:</B> Re: [NSRCA-discussion] Electric Power Consumption</DIV>
<DIV><BR></DIV><FONT size=2>
<DIV><FONT face=Arial>Just to update the thread, I heard today from Hobby Lobby and they recommend a different motor/esc combo that will run with my 5s4p packs in series...so I'll go with that. They also said they would give me a 50% credit for the ESC which I think is pretty nice considering that I take full responsibility for burning it up<G>. </FONT></DIV>
<DIV><FONT face=Arial></FONT> </DIV>
<DIV><FONT face=Arial>Is there any way to tell that I fried the motor or not? H_L says that I can send it back to Actro for repair, but I hate to send it back to the continent if it isn't broken.</FONT></DIV>
<DIV><FONT face=Arial></FONT> </DIV>
<DIV><FONT face=Arial>George</FONT></DIV>
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<DIV style="FONT: 10pt arial">----- Original Message ----- </DIV>
<DIV style="BACKGROUND: #e4e4e4; FONT: 10pt arial; font-color: black"><B>From:</B> <A title=d.pappas@kodeos.com href="mailto:d.pappas@kodeos.com">Dean Pappas</A> </DIV>
<DIV style="FONT: 10pt arial"><B>To:</B> <A title=nsrca-discussion@lists.nsrca.org href="mailto:nsrca-discussion@lists.nsrca.org">NSRCA Mailing List</A> </DIV>
<DIV style="FONT: 10pt arial"><B>Sent:</B> Wednesday, January 11, 2006 9:53 AM</DIV>
<DIV style="FONT: 10pt arial"><B>Subject:</B> RE: [NSRCA-discussion] Electric Power Consumption</DIV>
<DIV><BR></DIV>
<DIV><SPAN class=296374515-11012006><FONT face=Arial color=#0000ff>Hi George and Gang,</FONT></SPAN></DIV>
<DIV><SPAN class=296374515-11012006><FONT face=Arial color=#0000ff>Lacking a copy of one of the fancy e-simulator tools, you can go to <A href="http://www.aveox.com">www.aveox.com</A>, and find their free simulator. It ain't fancy, but if you adjust the number of NiCad cells used by default to get 34 or 35V, then it produces meaningful results. Plug in the numbers for Kv, winding resistance, and no-load current of your motor (should all be available on the mfgr's website and to any who don't shame on you!) and you will get a good +/- 10% estimate of the current you should expect with a given prop. The tool works, and can save you money and grief. Most importantly, use a current meter the very first time you try any new prop size! Sears sells a nifty clamp-on DC current meter for $50. RVP, what was the part number on that critter, again?</FONT></SPAN></DIV>
<DIV><SPAN class=296374515-11012006><FONT face=Arial color=#0000ff>later,</FONT></SPAN></DIV>
<DIV> </DIV>
<P><FONT face="Times New Roman">Dean Pappas</FONT> <BR><FONT face="Times New Roman">Sr. Design Engineer</FONT> <BR><FONT face="Times New Roman">Kodeos Communications</FONT> <BR><FONT face="Times New Roman">111 Corporate Blvd.</FONT> <BR><FONT face="Times New Roman">South Plainfield, N.J. 07080</FONT> <BR><FONT face="Times New Roman">(908) 222-7817 phone</FONT> <BR><FONT face="Times New Roman">(908) 222-2392 fax</FONT> <BR><FONT face="Times New Roman">d.pappas@kodeos.com</FONT> </P>
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<DIV class=OutlookMessageHeader dir=ltr align=left><FONT face=Tahoma>-----Original Message-----<BR><B>From:</B> nsrca-discussion-bounces@lists.nsrca.org [mailto:nsrca-discussion-bounces@lists.nsrca.org]<B>On Behalf Of </B>George Miller<BR><B>Sent:</B> Wednesday, January 11, 2006 7:25 AM<BR><B>To:</B> patternrules@earthlink.net; NSRCA Mailing List<BR><B>Subject:</B> Re: [NSRCA-discussion] Electric Power Consumption<BR><BR></FONT></DIV>
<DIV><FONT face=Arial>Thanks, Steve- I picked the Actro 32-3 because I'm going to use one in my Ion and I therefore knew that it would run on the 5s4p packs. I picked the prop at the upper end of the Hobby Lobby range...didn't do the RPM/volt calculation...but if that is true, even with only only one pack(5S), I'd be pushing 10K rev's ..... My Plettenberg turns about 9K with 42 Volts. As to the cell count--- at 1.5 volt per cell, 26 nicad cells is about 39 volts...and since I knew the actro was run in heli's with the 10S setup, I thought that was pretty close.....</FONT></DIV>
<DIV><FONT face=Arial></FONT> </DIV>
<DIV><FONT face=Arial>I'm not trying to be contentious, I'm just trying to learn how to do these calculations properly in the future. Its all well and good to say use a proven system, but someone has to "prove" each one as they come available. I guess I need much more info before I become a pioneer<G>.</FONT></DIV>
<DIV><FONT face=Arial></FONT> </DIV>
<DIV><FONT face=Arial>G</FONT></DIV>
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<DIV style="FONT: 10pt arial">----- Original Message ----- </DIV>
<DIV style="BACKGROUND: #e4e4e4; FONT: 10pt arial; font-color: black"><B>From:</B> <A title=patternrules@earthlink.net href="mailto:patternrules@earthlink.net">Steven Maxwell</A> </DIV>
<DIV style="FONT: 10pt arial"><B>To:</B> <A title=nsrca-discussion@lists.nsrca.org href="mailto:nsrca-discussion@lists.nsrca.org">NSRCA Mailing List</A> </DIV>
<DIV style="FONT: 10pt arial"><B>Sent:</B> Tuesday, January 10, 2006 11:22 PM</DIV>
<DIV style="FONT: 10pt arial"><B>Subject:</B> RE: [NSRCA-discussion] Electric Power Consumption</DIV>
<DIV><BR></DIV>
<DIV>
<DIV> I'm trying to learn some of this also, so take anything I might say with a grain of salt, I will be using a standard setup this spring that many have already used.</DIV>
<DIV> From Hobby-Lobby site for Actro 32-3</DIV>
<DIV>
<DIV align=left><FONT face="Verdana, Arial, Helvetica, sans-serif" color=#ff0000>For 14-26 cells in propeller models and 28-32 cells in helicopters. Propeller range is 13" to 18" in diameter. This 3 turn motor has an RPM/Volt of 555, resistance of 34 mOhm. Maximum efficiency of about 89% in the 50-95 amp draw range. Power output in the 550-2000 watt range.</FONT></DIV></DIV>
<DIV> Sounds like you used 5S4P in series 42 volts X <FONT face=Verdana color=#ff0000>RPM/Volt of 555<FONT color=#000000>=23,310 rpm.</FONT></FONT></DIV>
<DIV><FONT face=Verdana color=#ff0000><FONT color=#000000> I tried to run a setup on motor calc but there data is so outa date nothing there to use maybe somehas elecalc to do figures for you.</FONT></FONT></DIV>
<DIV><FONT face=Verdana> The other thing I have found on Hobby Lobby site is most of the time they talk about cells is to NiMh or NiCd if Lipo's they generally say so.</FONT></DIV>
<DIV><FONT face=Verdana> </FONT> Hope this will generate some info and the best of luck.</DIV>
<DIV> Steve Maxwell</DIV></DIV>
<DIV> </DIV>
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<DIV style="FONT: 10pt Arial">----- Original Message ----- </DIV>
<DIV style="BACKGROUND: #e4e4e4; FONT: 10pt arial; font-color: black"><B>From:</B> <A title=glmiller3@cox.net href="mailto:glmiller3@cox.net">George Miller</A> </DIV>
<DIV style="FONT: 10pt arial"><B>To: </B><A title=discussion@nsrca.org href="mailto:discussion@nsrca.org">discussion@nsrca.org</A></DIV>
<DIV style="FONT: 10pt arial"><B>Sent:</B> 1/11/2006 1:32:01 AM </DIV>
<DIV style="FONT: 10pt arial"><B>Subject:</B> [NSRCA-discussion] Electric Power Consumption</DIV>
<DIV><BR></DIV>
<DIV><FONT face=Arial>I have a problem with an electric conversion which while not precisely pattern related, I'm sure will be applicable to electric pattern problems...so I'll ask it here.</FONT></DIV>
<DIV><FONT face=Arial></FONT> </DIV>
<DIV><FONT face=Arial>I am trying to convert a Showtime from YS 110 4 cycle power to electric power. After looking around the web, I got an Actro 32-3 - which is a popular motor for the Ion electric helicopter. I know that this motor runs well with available ESC's on 5S4P lithium packs, so I set it up with a 17X12 APC e prop and a 77amp ESC from Hobby Lobby ( esc and prop recommended on their website). To make a long story short, the ESC litterally burned up 30 seconds into the first flight....but BOY WHAT POWER for that 30 seconds<G>!!!</FONT></DIV>
<DIV><FONT face=Arial></FONT> </DIV>
<DIV><FONT face=Arial>OK, so I'm thinking that burning up probably indicates a problem.....and I start to investigate...I hook up a watts-up to my Focus II with a Plettenberg 30-10 and a 21X12 APC and it pulls about 65 amps at full throttle on the bench....Then I set up the Showtime and it tops 75 amps at half throttle!! HMMM, so there is the problem....Now I try to make changes to decrease the amperage -- larger prop and smaller prop---no major change, then I tried just using a 5 cell pack cutting voltage in half...still about the same....so the question is: How do you adjust the current drawn by an electric motor? Can this set up be salvaged...Where did I go wrong and how can I avoid this in the future? </FONT></DIV>
<DIV><FONT face=Arial></FONT> </DIV>
<DIV><FONT face=Arial>TIA for your help and the benefit of your experience!</FONT></DIV>
<DIV><FONT face=Arial></FONT> </DIV>
<DIV><FONT face=Arial>George</FONT></DIV></BLOCKQUOTE>
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