Circuit breakers

Roger · Post by **Roger** » Thu Apr 30, 2009 1:01 pm

A couple of questions for one of you guys that are into electronics way more then me.
I have the 912ULS Rotax in the Highlander and the Rotax manuel calls for a 2 amp breaker or fuse for the starter solonoid which is what I have. Last evening I hooked up the battery and turned the engine over maybe a half turn and the breaker popped. I tried again with the same results. Those of you that have this same setup, have you had anything like this, and if so whats the remedy?
Second question: I had the 10 amp breaker pop on the strobe lights too. Surely 10 amps is enough for the strobes. Right?
Any thoughts would be greatly appreciated.

Roger

jak · Post by **jak** » Thu Apr 30, 2009 7:23 pm

Hey roger jak here. I've never put the breaker on the starter relay and i've never saw a set of strobes that take less than a 15 amp breaker except the new led ones.

scubarider2 · Post by **scubarider2** » Thu Apr 30, 2009 8:21 pm

Roger, You need to contact Jak to talk about your wiring and breakers. He is the guy in the KNOW.............

Dennis

Roger · Post by **Roger** » Thu Apr 30, 2009 10:53 pm

Hey Jak, thanks a bunch for that. I thought that 10 amps on the strobes would be enough. I'll try a 15 amp and see what happens. I talked to a friend of mine today about the solonoid, and he said on all his old cars that he rebuilds, he uses at least a 20 amp breaker or fuse, and he's a pro. Don't know why Rotax calls for a 2 amp. Doesn't even make sense.

And thanks to Dennis too.

Roger

KevinC · Post by **KevinC** » Fri May 01, 2009 8:34 am

Roger,

I used this wiring diagram (with a few small mods) for my Rotax/Highlander. http://www.aeroelectric.com/PPS/Adobe_A ... s/Z16M.pdf

Not an expert by any means - but it worked the first time and so far (~24 hrs) no problems.

Lots of good info at this website.

k

jak · Post by **jak** » Fri May 01, 2009 9:48 am

Hey it's Jak again I'm not at the plant this week but as soon as I get back there I will look at the rotax book I have and see what the 2 amp is all about. I put a 30 on the power coming in from the eng and havn't put a 2 on anything yet. I will check and let you know though.

Dave Krall CFII SEL SES · Fri May 01, 2009 1:43 pm

Roger wrote:Hey Jak, thanks a bunch for that. I thought that 10 amps on the strobes would be enough. I'll try a 15 amp and see what happens. I talked to a friend of mine today about the solonoid, and he said on all his old cars that he rebuilds, he uses at least a 20 amp breaker or fuse, and he's a pro. Don't know why Rotax calls for a 2 amp. Doesn't even make sense.

And thanks to Dennis too.

Roger

The 2 could be a decimal point typo error...

Wes · Post by **Wes** » Sat May 02, 2009 8:13 am

Hey Guys,
I measured the current draw on the solenoid and it was 2.6 amp at 13.7 volts. So, the Rotax schematic is certainly in error where they show a 2 A breaker. Bob Nuchols schematic that calls for a 7A breaker is more correct. I would think 5 to 10 amp would be OK.

Figuring out fuel plumbing and fitting the turtle deck.

Wes

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