it has to be said

[storchy neil]

if you have a Rotax 912 series motor

 

how legal is your plane do you have to have return line to your fuel tank to return excess fuel from carburettors

 

the number of aircraft that do not have this will come as a surprise to some neil

 

 

[metalman]

Yep mines fine

 

 

[Ultralights]

i think those that dont can sometimes have issues with flooding carbies,

 

 

[M61A1]

It is my understanding that the return line is to prevent vapour lock.

 

 

[geoffreywh]

to return excess fuel from the carbs???? What excess fuel???? That does not compute with the fuel regulated by float/ float bowl and needle and seat.. There could possibly a return line so that the fuel "head" is constant...

 

 

[rgmwa]

The RV-12 with a 912 ULS has a return fuel line.

 

rgmwa

 

 

[cscotthendry]

The return line is indeed a vapour return as described in the 912 installation manual. I put one in my Nynja, but the trike I owned previously that was commercially manufactured, didn't have it, AND the manufacturer ran the unshielded fuel line right under the intake manifold where it gets bloody hot! That was a recipe for vapour lock.