Tactic receiver goes up in flames !

[properchopper]

Here's what happened : Ran my Shovel out from the stand, turned right & forgot to reverse the steering from my UL-1 setting, { yeah, I know, should'a checked it first } so I flipped it - 60 mph hydros don't like left turns . Got the rescue boat out to the shovel; blipped the throttle & it worked. Got back to the table, untaped & the rcvr was on fire !! Melted all the connectors & the case. Here's 3 possibilities :

1] My CC BEC was prgrmd for 6V out [ leftover setting from my LSO boat which needed some grunt to steer left]. I metered the BEC & it was right at 6V out.The UL-1 BEC puts out 5.2 V at 2 Amps ; the CC BEC puts out a "max" of 10 Amps. Overload ?

2] seemed wet, although it was Corrosion X'd, possible water shorting ?

3] random smoke-exiting for unexplained reasons.

I'm liking #1 explanation & will eliminate the CC BEC & use a rcvr pak most likely. Be Advised !!

This was right before I destroyed my sweet, sweet VS-1 by running it into a turn Buoy. What a day !!

[Flying Scotsman]

Tony, #1, never use BEC

Douggie

[theShark]

Whoa, hope nothing else got buggered. I use BEC in everything even if the esc has a bec an external will let the esc run cooler.

[properchopper]

Tony, #1, never use BEC

Douggie

the Hydra 240 BEC that I was running has the BEC bypassed [ red wire interrupted]. I was using an outboard CC BEC.

[properchopper]

Whoa, hope nothing else got buggered. I use BEC in everything even if the esc has a bec an external will let the esc run cooler.

That's exactly why I run an external BEC on pretty much all my fleet except for the watercooled, Etti-capped CC 80 in my UL-1 which stays within a reasonable range [ @ 110 deg]

[Steven Vaccaro]

Wow Tony thats the first I've heard of any rx. Did you see an actual flame or just smoke?

For years I have always just a cheapo 4 aa holder. So far they have never failed me, but I do use lots of Energiser batteries.

[Simon.O.]

Wow Tony thats the first I've heard of any rx. Did you see an actual flame or just smoke?

For years I have always just a cheapo 4 aa holder. So far they have never failed me, but I do use lots of Energiser batteries.

Tony, without seeing your setup, as seen and smoking, I can not offer a lot of help other than a 6V pack vs a 4.8V pack for a LSO justified by a powerful steering servo is a bit off.
I run a super-crawler, local mates only style comps and a 6V rx pack is fine (needed) there. These run 15 kg (35+lb) servos.

Fwiw. For a Rx pack for my boats I use a 9V flat cell that is commonly found in domestic smoke alarms, I hope you all have one or more and they work.

These are a low Ah cell but have high V for the Rx. They work for me well.

I have had one of my favourite Rx's wet so many times it is well less than funny. Each time it comes back for more. I have to do a waterproof rx box for the opc tunnel

I am surprised that a Rx would fry, including smoke.

[Steven Vaccaro]

Tony, without seeing your setup, as seen and smoking, I can not offer a lot of help other than a 6V pack vs a 4.8V pack for a LSO justified by a powerful steering servo is a bit off.
I run a super-crawler, local mates only style comps and a 6V rx pack is fine (needed) there. These run 15 kg (35+lb) servos.

Fwiw. For a Rx pack for my boats I use a 9V flat cell that is commonly found in domestic smoke alarms, I hope you all have one or more and they work.

These are a low Ah cell but have high V for the Rx. They work for me well.

I have had one of my favourite Rx's wet so many times it is well less than funny. Each time it comes back for more. I have to do a waterproof rx box for the opc tunnel

I am surprised that a Rx would fry, including smoke.

Simon I also used to run the 9v packs when I first started, but when the esc switch was rolling towards brushless, we were all told that brushless esc's would have issues with 9 volts. Wonder if that was false?

[RayR]

2.4 MHz recievers do not like 9V.

Ray

[bustitup]

the Hydra 240 BEC that I was running has the BEC bypassed [ red wire interrupted]. I was using an outboard CC BEC.

those can be just as bad....I never use a bec any more..... ALLWAYS RX BATT PACK NOW

[SJFE]

Wow sorry to hear you had such bad luck Props .

[Flying Scotsman]

the Hydra 240 BEC that I was running has the BEC bypassed [ red wire interrupted]. I was using an outboard CC BEC.

Woops, sorry Tony I did not see external BEC. Although, that was possibly the cause with a malfunction or more likely a RX issue
I run a external 5 cell NI-MH 1400mah packs and have had no problems. I just do not like BEC circuitry within the RX

Douggie

[Ub Hauled]

I was present at the time, it's a matter of fact, I asked him to go out one more time to play, I feel a little guilty but not much ... it would have gone up in flames anyhow...
I think the only reason there weren't any flames it's 'cause the Rx was in a balloon and had no air, it was a pretty thick smoke. I wanna say it was some sort of Rx failure, specially since it worked a couple for a rounds earlier.
Does anyone have an instruction sheet for the Rx? What is the max voltage specified for it?

[Flying Scotsman]

Simon I also used to run the 9v packs when I first started, but when the esc switch was rolling towards brushless, we were all told that brushless esc's would have issues with 9 volts. Wonder if that was false?

The problem with 9v nominal is that many servos will self destruct, as they are designed for 6v nominal, give or take 25%. Ask a Hitec service tech this question and you will have an interesting answer.

Douggie

[AndyKunz]

Rex - Spektrum takes 9V just fine. Read the specs here: http://www.horizonhobby.com/Products...odID=SPMSR3100

6V is usually not going to be a problem. I'd be very surprised if the Tactic rx fried from that, since most guys run 5-cell batteries on their receivers. Tower doesn't have a voltage spec on their website.

The CCBEC is a pretty good product.

Andy