<div>IT is definitely your timing and switching that is causing the chatter. </div> <div> </div> <div>Now i definitely recommend going to the 19X12 prop. This is the identical setup i used on the Pentathlon weighing 10.2 lbs RTF. I tried using a cut down 18X15 and performance was staggering until I let the magic smoke out of the motor!!!!! Lasted about 4 flights.</div> <div> </div> <div>Good luck</div> <div> </div> <div>Chuck<BR><BR><B><I>Ron Van Putte <vanputte@cox.net></I></B> wrote:</div> <BLOCKQUOTE class=replbq style="PADDING-LEFT: 5px; MARGIN-LEFT: 5px; BORDER-LEFT: #1010ff 2px solid">Sorry, I made a mistake. I've been involved with selling several <BR>Dualsky 6360-12T motors recently and, when I was typing what I am <BR>using on my airplane, I got the turns wrong. I am using a Dualsky <BR>6350-16T, not the 12T. I know the 16T can swing a bigger prop than <BR>the 12T. Does that change any of the responses I
received?<BR><BR>BTW, thanks for the help so far.<BR><BR>Ron VP<BR><BR>On Jun 4, 2008, at 9:20 AM, Charles Hochhalter wrote:<BR><BR>> Your soution to the problem will be timing... i switched to the <BR>> Castle 85 and reset timing solving the problem.<BR>><BR>> As for your prop selection and the 18X12, this is one of the worst <BR>> props for eating amps that is out there. I recommend a smaller <BR>> diameter prop. I ran the 16T on a 19X12 and liked the performance.<BR>><BR>> When I flew the 12T I had trouble developing the power I would be <BR>> happy with on a 10 lb airframe.<BR>><BR>> good luck<BR>><BR>> Chuck<BR>><BR>> Terrence Walker <TEWALKER10@YAHOO.COM>wrote:<BR>> Ron,<BR>><BR>> I've only been flying electric for only two months so be sceptical <BR>> of anything that I have to say. I have a setup very similar to <BR>> yours and I had that same problem.<BR>><BR>> Here's my setup:<BR>> Dualsky 6360
- 11T<BR>> Jeti Opto 90 Advance Plus ESC<BR>> APC 19X13 E<BR>><BR>> My solution was to set my ESC to "hard timing" to eliminate the <BR>> chattering.<BR>><BR>> I'm not familar with the programming card so "OUTRUNNER timing" may <BR>> be the same as<BR>> "hard timing" in which case in those immortal words of Gilda <BR>> Radner..."never mind"<BR>><BR>> Hopefully, someone more knowledgable than me post a solution.<BR>><BR>> Good Luck,<BR>><BR>> Terry<BR>><BR>> Ron Van Putte <VANPUTTE@COX.NET>wrote:<BR>> I have converted a World Models Spot-On 120 for electric-power. The<BR>> motor is a Dualsky 6350 - 12T (2000 watt), swinging an APC 18x12 E<BR>> prop. The speed control is a Jeti Opto 90 Advance. Using the Jeti<BR>> programming card, I set the timing for OUTRUNNER, the brake for OFF,<BR>> the cutoff voltage to HIGH, the cutoff type to SLOW DOWN and the<BR>> throttle curve to LINEAR. I am using a Futaba 9Z
transmitter, with<BR>> the throttle throw initially set from -100% to +100% as indicated in<BR>> the Jeti instructions.<BR>><BR>> When the throttle is advanced, RPM builds up normally, but at about<BR>> 60% of throttle stick position, the motor 'chatters' and I have to<BR>> shut it down. If I don't do anything other than reduce the high<BR>> throttle in ATR from +100% to +80%, the motor comes smoothly up to<BR>> maximum RPM.<BR>><BR>> What's going on?<BR>><BR>> Ron VP<BR>> _______________________________________________<BR>> NSRCA-discussion mailing list<BR>> NSRCA-discussion@lists.nsrca.org<BR>> http://lists.nsrca.org/mailman/listinfo/nsrca-discussion<BR>><BR>> _______________________________________________<BR>> NSRCA-discussion mailing list<BR>> NSRCA-discussion@lists.nsrca.org<BR>> http://lists.nsrca.org/mailman/listinfo/nsrca-discussion<BR>><BR>>
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