Rotax 912 icing

Chuckhhill · Post by **Chuckhhill** » Fri Oct 03, 2008 4:43 pm

Since I have a 912 ULS which doesn't have provision for carb heat, I was wondering if anyone has had any experience with 912 carb icing and also if there is a reason no carb heat is needed or provided (if that is the case).

Thanks

rsteele · Post by **rsteele** » Fri Oct 03, 2008 8:55 pm

There was a long thread about this on the Matronix Rotax list. To summarize, the Bing carbs' used on the 912 are pretty resistant to icing. However there have been instances of it happening in severe icing conditions.

Ron

Chuckhhill · Post by **Chuckhhill** » Sat Oct 04, 2008 2:13 pm

Ron,

Thanks,

David · Post by **David** » Sat Oct 04, 2008 10:31 pm

Chuck,

I have a sport hornet - see post under Sport Pilot Talk Forum Index -> Light Sport Aircraft Update on Sport Hornet – N25DV
http://sportpilottalk.com/viewtopic.php ... highlight=

I ask the manufacturer to provide the Coolant Carb Heat system - (Always On, without effecting performance or smoothness. Hot coolant runs only around the carb throat keeping it above freezing temperature. This avoids heating any incoming air at all that decreases performance and makes the engine run rough. Used in many aircraft equipped with the 912. Proven system)

More info on Light Sport Aircraft Store website

http://www.lightsportaircraft.ca/912rot ... _heat.html

David

flyboy2007 · Post by **flyboy2007** » Tue Jan 06, 2009 1:08 pm

can any one tell me or s there a diagram on richening or leaning the carb on the 912. My freind has one and doesnt know how to do it, and I don't either cause i have the 503. any help would be appreciated.

CharlieTango · Post by **CharlieTango** » Tue Jan 06, 2009 1:17 pm

the carbs are self adjusting ( lean / rich )

flyboy2007 · Post by **flyboy2007** » Wed Jan 07, 2009 3:22 pm

I was showed how to do it from an a&p but thanks for the reply. they are not self adjusting they hace a clip on the needle you move down for rich and up for lean. fly safe!

CharlieTango · Post by **CharlieTango** » Wed Jan 07, 2009 4:11 pm

flyboy2007 wrote:I was showed how to do it from an a&p but thanks for the reply. they are not self adjusting they hace a clip on the needle you move down for rich and up for lean. fly safe!

this is from http://www.rotax-owner.com/support/FAQs.pdf

it says:

-Where is the mixture control?

The Rotax 9 series has automatic mixture control as a feature of the carburetors.

flyboy2007 · Post by **flyboy2007** » Thu Jan 08, 2009 9:47 am

Huh, Maybe the newer ones are different. This one is a 93 maybe I should have said that to start with. anyway thanks for the reply it's all done now.

Cub flyer · Post by **Cub flyer** » Fri Jan 09, 2009 7:27 am

X air Ireland has a little electric heater which fits the Bing carb.
I had one on the X air and it worked ok. Might be simpler to install than a coolant system.

Rotax 912 icing

Rotax 912 icing

carb adjustment