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Post by hol3shot on Jan 16, 2012 3:38:05 GMT 1
I think my stock Rx is bad. What's the easiest and cheapest way to get a new one in there?
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Gohmer
Squadron leader
Posts: 113
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Post by Gohmer on Jan 16, 2012 18:51:59 GMT 1
Are you in the UK? Best is Zimports. Hobbyking orange RX and a 20a brushed esc is another option.
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Post by john66 on Jan 16, 2012 20:04:44 GMT 1
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Post by hol3shot on Jan 18, 2012 0:37:07 GMT 1
Thanks guys, and I'm in Maryland, US
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Post by hol3shot on Jan 18, 2012 0:42:55 GMT 1
Btw - why not use the esc with ubec all in one?
Just in case one breaks and not the other?
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Post by flydiver on Jan 18, 2012 1:39:30 GMT 1
Here's where you get into a problem.
Most BRUSHED ESC are designed for NiMh. That means the LVC is for NiMh and too low for lipo.
The BEC is also designed for lower powered systems so is pretty low rated. That's fine as long as you stay with 2 servos. When you move to a full mod with 4 servos it's too much for the BEC. Having Spektrum and too small a BEC are a known cause of 'Brown Out' and the dreaded "HUH? I upgraded everything and lost total power on my first flight!!" And people claim Spektrum fixes everything. Sorry, ain't so.
Google [Spektrum + Brown Out] for a fun evening.
About the ONLY brushed ESC out there with a lipo friendly LVC is the Turnigy. Hard to find outside Hobby King.
Absolutely DO NOT buy anything GWS, their ESC are garbage. Electrifly ain't so hot. In fact, the vast majority of brushed ESC aren't worth having if you want to use lipo unless you are VERY careful not to fly your battery voltage too low. But, that's good lipo practice anyway.
In addition, once you are done with it, you'll never use it again most likely. So, it's kind of a bit of arm twisting to get out of the proprietary HZ racket, dump ALL the electrics, and start over again.
But, it ain't a simple 'drop in'. You got to do some research and some thinking about where you are going with this. It's been done countless times and it's documented in the power and battery threads. This seems to be a simple question but it doesn't have a simple answer.
So, to actually answer your question - buy another stock unit and take your chances. Most of the time they are OK.
I wonder what the actual failure rate is vs ones destroyed by newbie caused failure.
Super Cub > A major cause of upgrading.
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Gohmer
Squadron leader
Posts: 113
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Post by Gohmer on Jan 18, 2012 3:56:18 GMT 1
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Post by flydiver on Jan 18, 2012 7:40:11 GMT 1
Good find. Looks OK on 'paper'. So, with this and similar components to those posted above you could get a new electronics system. Do some searching in the threads. HeadsUPRC is great place for supplies (but NOT brushed ESC - I even wrote him about that item). www.headsuprc.com/servlet/StoreFrontHe'll have a number of suggestions for the Super Cub. I strongly recommend you read most of his [NEW TO ELECTRIC RC?] part way down the index page. Or, just buy the stock part. |
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blue320
Flight lieutenant
Posts: 50
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Post by blue320 on May 22, 2012 19:08:21 GMT 1
hey flydiver,
how often have you used headsup rc? are they reliable for parts and shipping?
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Post by flydiver on May 22, 2012 19:47:12 GMT 1
Jeff at HURC is one of the best in the industry. I've used him numerous times as have my buddies. If he has what you need I'd recommend him.
Fritz
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Post by flydiver on May 22, 2012 19:50:41 GMT 1
Btw - why not use the esc with ubec all in one? Just in case one breaks and not the other? This never got answered..... The ESC has a BEC on board (most park flyer type do, some do not but that should be specified sometimes with the term 'OPTO'). A UBEC is just a separate BEC. 2 BEC used at the same time unless they are EXACTLY matched will 'fight'. Use one or the other but not both at the same time. Too bad it works that way. A redundant system would be nice. |
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Post by ginginho on May 24, 2012 11:09:20 GMT 1
Has Fly released a bit of personal information that has been withheld for as long as I can recall on here? ;D |
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Post by flydiver on May 24, 2012 15:54:26 GMT 1
Oops. Now I need to scurry under something and hide!
Or do you mean about the UBEC?
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Post by ginginho on May 24, 2012 16:46:54 GMT 1
Oops. Now I need to scurry under something and hide! Or do you mean about the UBEC? nope I meant your name, or favourite cartoon cat.  Your technical information is, as always, spot on. |
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