Thread Tools
Jan 11, 2012, 08:45 PM
The Need4Speed
fooyukvoon's Avatar
Discussion

Can different Brands of ESCs give different results on similar settings?


Hi everyone,

New to this section of RCGroups. I m having a bit of a confusing problem with a few of my ESCs. In a few of my setups, I noticed big differences in Watts with different ESCs. For example, in my latest setup...
Sapac 4000kv Outrunner, 4S, 2200mah 25C, Hobbyking SS 60A ESC - 533W peak

With a Turnigy 100A DLux ESC - 687W

Nothing changed other than the ESCs. The Turnigy is on auto detect mode.

The Hobbyking SS was tested thru all setting, just could not get the same figures as the Turnigy.

Can a Hobbywing Programming Card be used to program a HobbyKing SS Series ESC?

How do we reset the ESC to autodetect mode? (the online manual from HobbyKing does not show)

Lipo was fully recharged every test.

Thanks.

Foo
Sign up now
to remove ads between posts
Jan 12, 2012, 08:08 AM
Space Coast USA
hoppy's Avatar
Quote:
Can a Hobbywing Programming Card be used to program a HobbyKing SS Series ESC?
I just plug it in and see what happens. Some do, some don't. I would doubt seriously if the SS will work with that. You can set the battery type and brake - that's all.

Different ESC's, different results? In my experience, yes. You can say the same thing.
Last edited by hoppy; Jan 12, 2012 at 08:13 AM.
Jan 12, 2012, 12:53 PM
Rangers Lead the Way
They should theoretically give similar maximum output. However, differences in motor timing, throttle calibration / curve interaction with the TX, and size of wires / connectors could make a difference. I assume the 100A comes with bigger wires, which pass more current without heating up (which increases resistance).

Don't think the HW / Turnigy programming card will work with the SS controllers.
Jan 12, 2012, 07:47 PM
Registered User
While the basic circuits are pretty much the same for different ESCs, the software is a different story. When the ESC is set for 10 degrees of timing is it really 10 degrees? Does the ESC output the same waveforms that are shown in the text books? If you think so you have much more faith in programmers then I do. In any case there are other software problems such as interrupt latency that programmers have to work around that means what you get may not be what you think it is.
Jan 12, 2012, 08:13 PM
The Need4Speed
fooyukvoon's Avatar
Latest test on a setup I plan to put into the Hobbyking X-83, the figures I get :-


Sapac 4000kv Outrunner, 2650mah 40C 3S, 64mm EDF, Same Tx,Rx

Turnigy Plush 60A - AutoSetting - 687W
HobbyKing Birdie 60A - 533W
Hobbyking SS 60A - 505W

All on the same Lipo pack (Fully Balanced Charged before each test)

Found out only possible to program the HobbyKing SS/Birdie ESCs with Tx/Rx.

I am suspecting the ESC software or FET.

Foo
Jan 12, 2012, 08:30 PM
Registered User

Yes


Because there are different designs, components, tolerances, electronic chips & various suppliers still using people to control the quality.

How can we build it cheaper ???
The most important goal of all long lived companies.
All those cause constant changes in a product. By accident or design.
Most ARE DOING the best that they can.
Jan 13, 2012, 04:49 AM
Aka: Tom Jenkins
ApexAero's Avatar
Foo, IMHO reading more watts doesn't necessarily mean more power. It most likely is the cheaper means of parts and assembly on the ESC(resistance). You have two ESC's that are close on the readings and one not. Try the thrust test on a scale nose down and see which one does the best. Performance and efficiency don't always go hand in hand.
Jan 13, 2012, 05:55 AM
The Need4Speed
fooyukvoon's Avatar
Ok, will try to get thrust figures of all 3 ESCs n post my findings.

Foo
Jan 13, 2012, 07:28 PM
Space Coast USA
hoppy's Avatar
Simpler to just measure the rpm with a tach.
Same prop, more rpm, more thrust......and, more accurate.
Jan 13, 2012, 11:58 PM
Registered User
Philipp's Avatar
I will second Hoppy on the RPM measurement.
Easiest of all tests (Using same prop, of course)
Jan 14, 2012, 07:00 PM
The Need4Speed
fooyukvoon's Avatar
Now that would b a big problem. Can't think of where to find or buy a tachometer here. Have to search Hobbyking for it.

Foo


Thread Tools

Similar Threads
Category Thread Thread Starter Forum Replies Last Post
Discussion Motors start at different throttle settings on Twinstar... is there anything I can do NeveSSL Beginner Training Area (Aircraft-Electric) 4 Aug 06, 2011 01:02 AM
Discussion 3 different motors, too similar to be different sgomes Power Systems 1 Jun 21, 2011 06:06 PM
Help! Can PCM receivers be mix with different transmitter brands va02rcb Radios 2 Mar 17, 2006 06:00 AM
24 cell charge rate on different brands of chargers? gpeden Batteries and Chargers 10 Feb 23, 2003 10:02 AM