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500 Class Electric Helicopters 500 Class Electric Helicopters manufactured by Align, Tarot, SYMA, Airhog, Chaos, HK and similar.


View Poll Results: What is causing Lockout/Brownout?
Static in belt/boom only 10 34.48%
Rx/electronic placement only 1 3.45%
BEC/ESC noise or slight drop in BEC voltage only 5 17.24%
ESC not grounded to motor mount only 0 0%
2 of the above 4 13.79%
3 of the above 1 3.45%
All of the above 5 17.24%
None of the above 3 10.34%
Voters: 29. You may not vote on this poll

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Old 02-11-2008, 07:56 PM   #1 (permalink)
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Default True cause of Lockout/Brownout

Starting another poll to see what you think the source of these problems with lockouts are.

Please read all options before voting!
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Old 02-11-2008, 08:36 PM   #2 (permalink)
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You may want to try a poll for what servos people are using too. I have heard that the 3400gs are lockout prone with spektrum rxs. An Align pilot had no issues when running 9257s, when he switched to 3400gs he started getting brown outs. I may not have been the servos but it sure looks suspect.
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Old 02-11-2008, 08:40 PM   #3 (permalink)
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Quote:
Originally Posted by EKIM View Post
You may want to try a poll for what servos people are using too. I have heard that the 3400gs are lockout prone with spektrum rxs. An Align pilot had no issues when running 9257s, when he switched to 3400gs he started getting brown outs. I may not have been the servos but it sure looks suspect.
I can't see how it can be servo related, if it's servo current draw related, then it will fall under the BEC not supplying enough voltage under load.
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Old 02-11-2008, 08:45 PM   #4 (permalink)
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These observations were with the stock electronics and the jr servos are amp hogs compared to some others supposedly. So yes I guess it would fall under failing or low volt BEC.
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Old 02-11-2008, 08:53 PM   #5 (permalink)
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I'm just wondering if all the lockouts happened to those helis using the internal BEC of the ESC or there were also cases that effecient external BECs were used?
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Old 02-11-2008, 08:57 PM   #6 (permalink)
 

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im just curious... if the problem does have to do with bec/esc noise, i wonder if a ferrite ring between the esc and receiver might help?
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Old 02-11-2008, 09:15 PM   #7 (permalink)
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What I question is....Is it possible that running 4 digital servos plus gyro and receiver might be over taxing the 3amp internal BEC to the point where it shuts down or drops/reduces supplied power? Then if you add in a few rod ends/linkage balls that are possibly too tight, adding more resistance to a system that is already short on power. Not sure what else it could be, but I know that most people with the 450 size heli's are using stock setups usually didnt have any issues. Of course most are using Hitec hs65mg's which arent digital. If I remember correctly the 600 came with a 3 amp BEC but most ended up going to the updated 6 amp unit because of digital servos.

I personnally havent had any issues yet, But I sure have been reading a lot about them.

I hope this gets figured out soon, It does make me wonder when or if it will happen to me.
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Old 02-11-2008, 09:55 PM   #8 (permalink)
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I'm curious too.......are any of these brownouts occurring with an external BEC's and/or aftermarket ESC's?
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Old 02-12-2008, 02:41 AM   #9 (permalink)
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OK I voted 2 of the above! It has to be MORE than one issue or we would not be having these convo's and people would have resolved it by now if it was a single issue.

Based on ONLY user submissions here and that I CANT relate since I am not having an issue I think it is a noise problem AND a static ARC that is resetting the DX RX.

My .00002 cents.

Bob
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Old 02-12-2008, 02:57 AM   #10 (permalink)
 

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Could you change the vote to a multiple choice vote, so we can check every option we think - not only "two of the above"?

Peter
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Old 02-12-2008, 03:02 AM   #11 (permalink)
 

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Quote:
Originally Posted by Finless View Post
OK I voted 2 of the above! It has to be MORE than one issue or we would not be having these convo's and people would have resolved it by now if it was a single issue.
100% sure

Quote:
Originally Posted by Finless View Post
Based on ONLY user submissions here and that I CANT relate since I am not having an issue I think it is a noise problem AND a static ARC that is resetting the DX RX.
And perhaps ESC placement?

Quote:
Originally Posted by Finless View Post
My .00002 cents.

That wasn't much!

Peter
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Old 02-12-2008, 03:12 AM   #12 (permalink)
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Quote:
Originally Posted by psindrup View Post
Could you change the vote to a multiple choice vote, so we can check every option we think - not only "two of the above"?

Peter
I can't change the poll once it's started, so you should state which 2 or which 3 the problems are if you voted for those.
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Old 02-12-2008, 05:37 AM   #13 (permalink)
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It seems to me that the Spectrum receivers are not tolerant to low voltage and static. If you are going to use one, you better be very careful with component placement (good for any receiver), lube your belt with silicon containing no petrolium distilates, and use a quality external BEC. Otherwise, hope you are one of the lucky ones that doesn't see this problem.

I'll go out on a limb here and say that Spectrum needs to upgrade their design.

Rick


Note: I'm not a big fan of grounding schemes. That's why I said lube the belt. Thats not to say you can't be successful grounding if done right.
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