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ESC Choice - 9/8/2008 8:21:55 PM   
glenndening


 

Posts: 24
Joined: 1/21/2007
From: Doncaster, UNITED KINGDOM
Status: offline 		Can anyone please tell me the difference between cheap ESC's and the dear ones. for an OPTO 100A they range from about £10 to over £100. I know the more expensive will probably be more reliable, but is there really much difference ?
Thanks for your help,
Glenn
       Post #: 1

RE: ESC Choice - 9/9/2008 5:37:15 AM   
jdetray



Posts: 1249
Joined: 12/7/2004
From: Napoleon, OH, USA
Status: offline 		If better reliability isn't enough for you, also consider that ESCs from top companies such as Castle Creations and Jeti may offer a warranty and repair service. For example, Castle will repair any of their ESCs for a flat fee. Getting a no-name ESC repaired may not be possible at any price.

The well known companies may be somewhat more conservative in their specifications. Would you want to operate a no-name ESC close to its specified limits? I would not.

Also, the top brands may offer more features and programmable options that can be important in some applications.

On the other hand, if you operate a no-name ESC conservatively, do not expect to need factory service and support, and do not need lots of features, they are worth considering. If possible, purchase no-name products from a dealer you know and trust to stand behind what he sells.

That is my 2 cents (or 2 pence) worth of advice.

- Jeff

_____________________________

My other hobby: www.AstronomyBoy.com

(in reply to glenndening)
       Post #: 2

RE: ESC Choice - 9/9/2008 7:37:51 AM   
glenndening


 

Posts: 24
Joined: 1/21/2007
From: Doncaster, UNITED KINGDOM
Status: offline 		Thanks Jeff,
I have been using a 100A opto, no brand name, for six months, bought from Giantcod.co.uk. It has been pulling around 70A with no problem.

(in reply to jdetray)
       Post #: 3

RE: ESC Choice - 9/9/2008 1:02:58 PM   
whitecrest


 

Posts: 92
Joined: 8/8/2007
From: Orleans, MA, USA
Status: offline
quote:

ORIGINAL: glenndening

...I have been using a 100A opto, no brand name, for six months, bought from Giantcod.co.uk. It has been pulling around 70A with no problem.


You are operating with a nice 30-amp cushion. For much of a typical flight, it's probably more than that. I would be surprised if that controller did not last a long time if you continue in the same fashion.

I have had no failures with very inexpensive controllers. I substantially overrate the controller capacity for my intended application. This is easy to do without incurring a significant weight penalty.


_____________________________

Some things that count can''t be counted, and some things that can be counted don''t count. << A.E.

(in reply to glenndening)
       Post #: 4

RE: ESC Choice - 10/8/2008 8:38:23 PM   
johnpcunningham



Posts: 236
Joined: 2/11/2007
From: Austin, TX, USA
Status: offline 		I am an electrical engineer and I can tell you that I will NEVER EVER pay for top brand again. I've run Castle Creations 80 amp and hextronic 80 amp (unitedhobbies.com) and they both perform the same. The hextronic is $55 where teh CA is well over $120. Go to something like a standard 30 or 40 amp and the cost is even less. They are very well built.

Same goes for their Rhino lipos. $22 for a 3S-25C 11.1v 2150 MHa battery vs a Thunderpower equivalent 25C battery at $79. Even the motors from the above website are excellent (over Axi).

It is often said you get what you pay for, but I have found excellent prices for high quality motoros, ESCs and batteries.


(in reply to whitecrest)
       Post #: 5

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