-------------- Original message from "Ed Anderson" <eanderson@carolina.rr.com>: --------------


> The answer is that they don't, Ernest. A carb system is just a susceptible
> (if not more so) to troubles caused by excessive heat as fuel injected
> systems. If you ever get the carb hot enough to start boiling the fuel in
> the bowl you are in for a very interesting experience. I suspect that
> perhaps the fuel vaporizing in the throat of the carb may draw a
> considerably amount of heat from the carb keeping it cooler than you might
> expect. But, there has been more than one carburated aircraft engine
> stopping due to excessive heat in the fuel system. You have to take prudent
> measure to shield your fuel system from excessive heat regardless of whether
> Carb or injected.
>
> Ed A
>
>
> ----- Original Message -----
> From: "Ernest Christley"
> To: "Rotary motors in aircraft"
> Sent: Wednesday, March 16, 2005 10:16 PM
> Subject: [FlyRotary] Returnless fuel systems
>
>
> > I'm not trying to beat this horse to death, but this question has been
> > irritating me.
> >
> > We spent a lot of time discussing how the fuel that is firewall forward
> > gets hot and boils, therefore, the fuel had to be routed someplace where
> > it could cool.
> >
> > But what happens in carbuerated systems? There is a bowl there
> > collecting and holding a 1/2 cup of fuel along with the delivery lines
> > and the pumps only deliver a few pounds of pressure vs the 10's of pound
> > in an injected systems. How do the carbs get away with it?