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Rotax 914 Electrical Supply Protection Devices

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tonyrenshaw268(at)gmail.c
Guest

Posted: Sun Apr 27, 2014 10:08 am Post subject: Rotax 914 Electrical Supply Protection Devices

Hi,

I am wondering if anyone with a 914 has used a device like this below?

Regards 

Tony Renshaw

Sent from my iPad

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jan_de_jong(at)casema.nl
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Posted: Sun Apr 27, 2014 11:02 am Post subject: Rotax 914 Electrical Supply Protection Devices

Strikes me as unlikely to be useful.

Low voltage is the result of either:

- an open circuit in the regulator; the battery takes over 

automatically, or:

- (less likely) a short in the regulator - the battery will make the 

fuse in the B-lead pop; the battery takes over automatically.

The device would take the role of the fuse I suppose.

And you still need overvoltage detection and relay.

Maybe you should become a member of the Aeroelectric list of Bob Nuckols 

(also a Matronics list) and ask him what he thinks.

He is loves this stuff and is knowledgeable and pretty eloquent.



Jan de Jong



 	  Quote: 	
		   Hi,

 I am wondering if anyone with a 914 has used a device like this below?

 Regards

 Tony Renshaw

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ptag.dev(at)talktalk.net
Guest

Posted: Sun Apr 27, 2014 11:33 am Post subject: Rotax 914 Electrical Supply Protection Devices

Hi! Tony,

I haven't any experience about the device you mention but I had an

overvoltage trip system Called a "Crowbar" system by Bob Nuckolls of

Aeroelectric Systems. It was wired into the Jabiru wireing system I had with

the original engine on G-PTAG.

When I replaced that engine with the 914 I simply wired it in the same way.

For my money (and it was of minimal cost from Bob Nuckols) you would be

better protected from a runaway voltage rather than an under voltage.

Having said that I have never had it trip out yet. But I did find the multi

spade connections burnt to the regulator once. It is imperative that they

are maintained positive connections I've had no further problems but I have

the Schick regulator which replaced the standard issue Ducati. ( I'm

touching wood !)

Regards

Bob Harrison G-PTAG



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