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Procharged5.0 · 10:59 AM

A motor dyno would be the way to go. The graphs of the power output relative to voltage, current draw, etc plus measuring temps would be beneficial.

BUT.....

What if we could take and do an RC version of what we do in the 1:1 world?

Take one E-Revo w/4s2p Lipo's, Quark (or MM) and a Neu 1515/1Y run timed acceleration tests. For example: 0-30mph, 0-40mph, 0-50mph, 20-40mph and monitor voltage, temps, etc using something like the Medusa Power Analyzer Pro w/data logger and a Radar Gun (or maybe just acceleration for a fixed distance for simplicity) and then swap to a 1515/2.5D and re-run the tests.

Gearing swaps could be considered and several runs could be made w/various ratios and dropped into a matrix for comparison.

A major factor for me would be to see how the motor reacts/responds to mid-range acceleration. What motor/gear combo is most responsive and controlled for track use. Say your half throttle on track approaching a double or tripple jump and need power to clear it. Which combo is smoothest, most predictable and controlled? Lots of power is great but it needs to be in a useful rpm range and needs to be efficient to avoid excess heat buildup and battery drain.

that's my $3.52! Sorry for the lengthy response.

	(#42)
Procharged5.0 RC-Monster Titanium Offline Posts: 1,729 Join Date: Apr 2006 Location: Chicago, IL Area	11.02.2006, 10:57 AM A motor dyno would be the way to go. The graphs of the power output relative to voltage, current draw, etc plus measuring temps would be beneficial. BUT..... What if we could take and do an RC version of what we do in the 1:1 world? Take one E-Revo w/4s2p Lipo's, Quark (or MM) and a Neu 1515/1Y run timed acceleration tests. For example: 0-30mph, 0-40mph, 0-50mph, 20-40mph and monitor voltage, temps, etc using something like the Medusa Power Analyzer Pro w/data logger and a Radar Gun (or maybe just acceleration for a fixed distance for simplicity) and then swap to a 1515/2.5D and re-run the tests. Gearing swaps could be considered and several runs could be made w/various ratios and dropped into a matrix for comparison. A major factor for me would be to see how the motor reacts/responds to mid-range acceleration. What motor/gear combo is most responsive and controlled for track use. Say your half throttle on track approaching a double or tripple jump and need power to clear it. Which combo is smoothest, most predictable and controlled? Lots of power is great but it needs to be in a useful rpm range and needs to be efficient to avoid excess heat buildup and battery drain. that's my $3.52! Sorry for the lengthy response. Supermaxx-Racer-X, VBS, FLM chassis & Transcase, HSR Motorsports Slipper, Cage, MMM ESC, NEU1515. REVO 3.3, BL X1-CRT, CRT, BL-CRT.5, Procharged '92 Mustang visit www.chitownrc.com and www.rcbros.com Last edited by Procharged5.0; 11.02.2006 at 10:59 AM.