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Post by spiderhole on Apr 15, 2008 6:22:28 GMT 1
My SC is on the way and I found out yesterday the flying field that I'll be using has major interference issues with 27mhz. So now I'm researching how to convert the cub to 72mhz or 2.4ghz. I've already been eyeing a great deal on a Blade 400 heli which comes with the Spektrum DX6i. If I go this route here are the rest of the parts on the list based on what I've read here...
AR6000 Rx
Electrify C-12 ESC
HS-81 servros
If I end up not getting the Blade 400, I'll probably use an extra 72mhz tx and rx I have already with the same ESC and servos. Am I on the right track here, or should I be looking at other options?
Thanks.
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jt01
Squadron leader
Posts: 166
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Post by jt01 on Apr 15, 2008 12:16:45 GMT 1
Welcome to the forum. Sounds like a great set up either way. Both will work nice for you but I think the 2.4 set up would work best for future needs with no worries of interference.
Jim
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Post by flydiver on Apr 15, 2008 15:14:59 GMT 1
The Electrify is 12A is borderline. You should give yourself about 50% headroom.
That said you are half way to brushless and lipo anyway. You can go brushed and lipo but I certainly wouldn't do it with that ESC (ANY Electrify ESC-they are behind the development curve). LVC for lipos should be 3.0v or more. The Electrify is something like 2.7 - NOT acceptable, also true with a number of their other ESC. Be SURE to find that out BEFORE you buy. Also look critically at the programming capability. Some like the cheap Mag8 by TowerPro drive people crazy. Programming cards, computer links, or at least understandable programming are important. Read a programming guide, if you can't understand it, don't buy it.
If you do put a lipo in there you will be over the top of 12A quickly.
Check out the Thunderbird 18A at b-p-p.com. I've been looking HARD at ESC for several months now and have come to realize a lot of them are really poor products but since the average flier can't tell what they are doing they accept anything if it's cheap or believe a 'major' company like Tower or Electrify are good-not necessarily true.
The RX and servos are fine, good choices.
fly
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Post by spiderhole on Apr 15, 2008 19:51:01 GMT 1
Thanks for the tips on the ESC. People on some of the other fourms are saying that I should get an AR61000 or 6200 Rx instead of the 6000. However I can get the 6000 for about $10 less.
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Post by flydiver on Apr 15, 2008 23:00:18 GMT 1
I'm still 72MHz-no advice on 2.4. I assumed it would be fine. I do know your choices are limited. Figure out why they are recommending the 'upgraded' RX. If the difference is only $10 there may be a compelling reason to step up-kind of like my suggestion to go to the T-Bird vs. Electrify. I started out cheaply and now find I'm replacing all kinds of electronics that I'm unsatisfied with.
fly
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Post by spiderhole on Apr 15, 2008 23:00:27 GMT 1
Ok, I think I have a gameplan. I want to use my existing 72mzh RX, the HS-81 servos and a decent ESC. Then, later on when I get the Blade 400 I'll get an AR6X00 to replace the RX. The question is, would I need a different ESC to work with the 72Mhz vs the Spektrum RX?
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Post by spiderhole on Apr 16, 2008 0:33:46 GMT 1
So, would a brushless speed controller work with the stock brushed motor? Also, would any of these would be recommended? www.ka-planes.com/inc/sdetail/2174www.ka-planes.com/inc/sdetail/10707www.ka-planes.com/inc/sdetail/968The Electrify is 12A is borderline. You should give yourself about 50% headroom. That said you are half way to brushless and lipo anyway. You can go brushed and lipo but I certainly wouldn't do it with that ESC (ANY Electrify ESC-they are behind the development curve). LVC for lipos should be 3.0v or more. The Electrify is something like 2.7 - NOT acceptable, also true with a number of their other ESC. Be SURE to find that out BEFORE you buy. Also look critically at the programming capability. Some like the cheap Mag8 by TowerPro drive people crazy. Programming cards, computer links, or at least understandable programming are important. Read a programming guide, if you can't understand it, don't buy it. If you do put a lipo in there you will be over the top of 12A quickly. Check out the Thunderbird 18A at b-p-p.com. I've been looking HARD at ESC for several months now and have come to realize a lot of them are really poor products but since the average flier can't tell what they are doing they accept anything if it's cheap or believe a 'major' company like Tower or Electrify are good-not necessarily true. The RX and servos are fine, good choices. fly |
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Post by flydiver on Apr 16, 2008 1:09:36 GMT 1
You can't mix brushed with brushless but the ESC should work with either 72 or 2.4.
The HobbyWing and Dynam are 2 common examples of cheap Chinese ESC that I have used and in the future will no longer use. They use poor quality FET's (these bring the voltage down to the control equipment level) and have poor quality control. Do what you will but I still recommend the T-Bird. It only costs a bit more and is a completely superior product. My opinion is the specs on the Chinese ESC's are pretty much bogus. You'll find the same crap claims posted from site to site on the web-just cut and paste. None of them can confirm the performance of the units. I've had 3 of them burn up when used WELL under spec and I watt test all my power systems. In order to safely use one to 20A you need to buy a 40A unit. That is a closer $$ comparison to the Castle ESC's. Never heard of Sonix. If I haven't even heard of it after spending 100's of hours on the web reading you don't even want to go there.
These things come from China-they can claim anything they want. There are no rules. Ever notice some of the down right dangerous stuff coming over here from there? Lead in kids toys, poison in the pet food, etc? Verify everything.
Go find the instructions for programming them. If you can't find it, you don't want it. If you can't understand it, you don't want them. The HW and Dynam have programming cards-one thing in their favor, but I wouldn't trust them having done so and gotten burned often enough to realize it wasn't a fluke.
fly
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Post by ledzeppelin on Apr 26, 2008 1:44:33 GMT 1
Hi Folks:) I am another proud owner of SC. I am from Toronto, Canada and I have a question related to how to change the Tx/Rx on my Cub.
I have Spektrum DX6i Tx which comes with the AR6200 Rx. I want to install this new radio system in my SC as recently I had a very nasty experience with frequency interference.
Will you be so kind to tell me how to do this? I need to know what new parts I should buy in order to make the Spektrum run in my SC. I guess I need a new ESC but what model/brand? Will I be able to use the stock HZ servos or I will need to get new ones? From the original SC set up I am willing to keep just the batteries as I jave plenty of them and I do not want to go to Lipos at this stage. But I am ok with changing the motor to brushless. The folks who have gone brushless and still keep the Ni-MH batts, can you share what parts you used?
Thank you very much in advance!
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Post by flydiver on Apr 26, 2008 3:03:42 GMT 1
Hi, ledzepplin. Welcome aboard.
What you are doing is called hijacking someone else's thread. It's generally not considered good manners.
We know you want answers to your questions. Likely all you have to do is go into this same forum section, find some else that has done exactly what you would like to do, and start reading. There are extensive threads on converting electrics and motors. You don't HAVE to convert the motor. You DO have to convert EVERYTHING else.
fly
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Post by ledzeppelin on Apr 26, 2008 5:42:03 GMT 1
Dear Flydiver, I did not mean to 'hijacking someone else's thread'. I posted my question in this thread as it is related to the topic and I wanted to avoid the situation of starting new threads and cluttering the forms with related questions. I spent the last two days reading various threads on SC including this one and could not find a proper answer to my questions. I'll keep reading. But I have noticed that newcomers could be overloaded with info and too many threads that actually makes things even more complicated as one can lose the pattern. I appologize for the inconvenience I created - it was not intentional  |
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Post by flydiver on Apr 26, 2008 7:09:50 GMT 1
I know at first impression it seems like a reasonable thing to do. In reality it creates even more of the confusion that you are referring to. After you've been doing this awhile you'll get to notice all the threads that start: What is the best/plane/lipo/brushless motor/transmitter....etc. often posted 3 lines above exactly the same question. Go back to the this threads main folder. Read the threads on the DX6 like this one: supercubclub.proboards78.com/index.cgi?board=rg&action=display&thread=489Follow necessary links. Read ANYTHING that has to do with converting the electrics. The only thing different about your's is the specialized RX to go with the TX. If you follow Dave Smith's 'recipe' do NOT buy the Electrify C-12 ESC-the LVC is unacceptable. None of the Electrify ESC's are up to modern lipo standards. fly |
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