Optiguard - is the added safety greater than the extra risk? - RCCanada - Canada Radio Controlled Hobby Forum
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Old 01-11-2016, 05:14 PM   #1
Dark Helmet
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Optiguard - is the added safety greater than the extra risk?

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So I was thinking about buying an optiguard for my T-Rex 800E to add some extra safety. Now that I checked how the system works, I have doubts. Right now I'm using a 2s 5000 mAh GensAce LiPo as a RX battery which plugs directly into the FBL unit which also powers the receiver and that's it.
So what could go wrong is that the RX battery dies mid-flight or the electrical connection fails for whatever reason. Securing the connectors and using a quality LiPo (and seeing its voltage on the transmitter) should be reasonably safe.
An extra battery or BEC (the latter being what I had in mind) would require more connections, not to mention that the optiguard itself might fail which would send the helicopter right into the ground (or worse). The unit is probably RoHS compliant which means that they don't use lead in their solder. Good for the environment, but is it also good in a vibrating helicopter? I'm not too sure.

So what I would like to know is if any of you guys ever had a crash that could've been avoided with optiguard. Or the other way round, has anyone had a crash that happened because of optiguard? Only real failures please, forgetting to charge the RX battery doesn't count. I'm more interested in failing electrical connections and dying batteries or other causes that are not necessarily predictable.
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Old 01-12-2016, 09:05 AM   #2
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Re: Optiguard - is the added safety greater than the extra risk?

If you have two batteries, you already have a redundant power source. There is no need for an Optiguard.
That said, I have Optiguards on 3 of my helis and plan to put one on all of them. Never had an Optiguard fail and so far, never had a failure where the optiguard saved the heli. I think they are great, cheap insurance. That's why I use them.
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Old 01-12-2016, 10:14 AM   #3
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Re: Optiguard - is the added safety greater than the extra risk?

I don't have any first hand experience with the Optiguard but I am also considering it for a build I will be working on. Anything electronic will eventually fail so nothing will be bullet proof.

Does your primary flight battery also power your Rx? If so your 2S lipo is your redundancy. Would it be correct to assume you will get 4-5 flights out of 1 x 2S lipo? What I like about the Optiguard is that its only powers on when there is failure. As long as the Optiguard does not get activated you lipo will be charged. If you forget how many flights you had using the 2S lipo you could run into trouble.

In both cases you need to make sure you charge the 2S lipo and the Optiguard lipo before you head out. I know the Optiguard can charge the on board lipo from the primary battery but that would be a waste. Both options will work but what I also like about the Optiguard is that you can get the LED which will tell you there is a problem. If you don't run telemetry you may miss a fault using the 2S setup.
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