Safety Loops

[Boaterguy]

For my opinion it should go in the positive side. Current flow is fron Neg to Pos in a DC system. This is of course just an opinion.

that's how I feel, then any charge in the capacitors is isolated because they cannot discharge through to the batts.

[rcboatmanwithkids2880]

Thanks Guy's ,

Just set up " Safety Loop " for the positive wiring side ( see attached pictures ) , on my Dumas tunnel project , in aid of eventually racing it with MBCOFNSW


All the best in F/E R/C Boating ,
Brad

[martin]

Where possible use the longer bullet connectors rather than the standard shorter ones. With the shorter ones they can come unplugged if the water catches the loop in a spin or if the boat dives, Ive had this happen a few times with the shorter connectors.

[785boats]

Just thought I'd show a pic or two of how I (and many others) do a safety loop. I use 5.5 bullets & 8 or 10 gauge wire. Epoxied into a piece of wood which is epoxied up under the deck with the two female bullets protruding slightly. Never had any heating issues with them & a couple of my boats are pulling well over 100A.
You will notice that the loop is wired into the negative side of the battery & ESC. I have to agree with Steve here (& not just because we race at the same club) but as an electrician I was taught at College that in a DC circuit voltage flows with the carrier electrons. In our case, with the metals used in our circuits, the carrier electrons are negatively charged & flow from negative to positive. Therefor so does the voltage.
In actual fact it does'nt matter whether it's in the positive side or the negative side. Once the circuit is broken, nothing flows anywhere.

Cheers.
Paul
m_29 inch mono 003.jpgm_29 inch mono 007.jpg

[properchopper]

Drill two holes. Drop two in, tighten nut from bottom. O-ring will seal. Splice in. Plug loop in and Play.



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rcboatbuild@hotmail.com

[G1ST]

Brilliant Tony

[properchopper]

Brilliant Tony

Thanks. Sometimes I actually scare myself.

[Chenige]

Drill two holes. Drop two in, tighten nut from bottom. O-ring will seal. Splice in. Plug loop in and Play.



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rcboatbuild@hotmail.com

What are they and where can I get them?

[carlcisneros]

what size water outlets and bullets Tony?

[properchopper]

What are they and where can I get them?

What you see is a prototype. The only one in existance is sitting on my workbench. Lohring ( who is NAMBA's National Safety Director) asked me to help him develop ideas for what may one day be a requirement for NAMBA sanctioned events. I threw this one together to show him the concept of an installation friendly safety loop which would overcome the objections of being tricky/sloppy to install. I'm toying with the idea of making/selling them. We'll see.

[properchopper]

what size water outlets and bullets Tony?

Check your inbox

[carlcisneros]

got it

[Doug Smock]

http://www.youtube.com/watch?v=vz8-mgg2Q2A

And safety loops are a priority in LA?
Just sayin,
Doug

[Chenige]

Is there any concern with safety loops on accidental "shorting" across the two exposed connectors when the boat is on the table? Just wondering if that matters.

Seems like a female connection insulated from the outlet would be safer?

[sailr]

Regardless of what sort of safety loop you use, the retriever still has to pick the boat up out of the water to unplug it! They just need to be trained to stay away from the prop...PERIOD. The safety loop doesn't REALLY make it any safer in my opinion.

As it turns out, the safety loop issue has surfaced here in L.A. where FE is starting to be raced during gas/nitro events. The retrieve boat operators have inquired about a means of disarming an electric boat. While a traditional on/off switch disconnecting the rx from the speed control or the rx from its power source coupled with a fail safe in the rx or even the SC can cover certain faults, a wet rx and/or speed control could bypass these safety features as Lohring points out. Water intrusion into these components is a very likely possibility on boats to be retrieved, since they most often have sat in the water upside down for several minutes and even the most perfectly taped boat may eventually let water in. I believe the handwriting is on the wall, at least here in L.A. regarding a safety-loop device. I have two different designs in mind which would make installation minimally invasive but without manufacturing abilities this is only a mind game. Thinking, thinking......