RappyPilot

Hi all

A friend of mine gave me a Novarossi Exhaust Gas cooler. You know those jobbies that you put on your pressure line between the muffler and the fuel tank to supposedly keep the air cooler going into your fuel tank.

Read some articles on it and they say will cool the air coming from your muffler by about 7 degrees celcius giving you longer flight times etc.

Anyway, it looks quite cool from a bling point of view

Was just curious if anyone uses them and if they actually do provide something positive in terms of performance/fuel consumption etc.

w8ye

My Feedback: (16)

Just something to get your money?

Bobhend

My Feedback: (1)

Maybe I am missing something but it sounds ridiculous. Not much exhaust goes in, however it is important that it can move in and out rapidly so the tank pressure can track the engine speed and fuel demand. If they said it was there to keep the ex gas cleaner, it might make at least a little sense. Haven't had my coffee yet though.

downunder

A gadget like that can't do anything useful because, no matter what the temperature of the gas in the line, it can only flow into the tank at exactly the same rate that fuel is going into the carb. The only time the gas flow speeds up is when you've had a low throttle setting then go to a higher setting. At low throttle the slightly pressurised air in the tank flows back into the muffler then when going to a higher throttle the gas flows quickly into the tank to build up pressure again. So apart from changing throttle settings the gas flow always equals the fuel flow.

deadstick8409

My Feedback: (2)

Air at that velocity will not compress. The pressure is exactly the same cool or not. Snake oil in this hobby? Never~!

TimBle

A lower gas into tank temperature means less fuel vaporisation in the tank so more liquid fuel can reach the carb.

as the fuel volume decreases the gas space increase allowing for more vapour phase. Fuel vapour does not get drawn toward the engine...

freakingfast

My Feedback: (3)

Agree....What he said

I'm surprised the a great engine maker like Novarossi would make a .......... Exhaust Gas cooler?

fiery

My Feedback: (2)

I thought the first of April was some way off