[Marck]

Gwagensteve wrote:

tom240 wrote:

someone told me its only purpose was to stop the carburettor icing up when its very cold, pointless in Australia

Not really. It doesn't have to be below freezing to ice a carb - Ice will form below about 2-3˚C, all the more so with fuel acting as a cooler.

Steve.

Carb icing can happen well above 2 or 3 degrees c

This is aviation based but gives you a bit of a picture

https://www.casa.gov.au/sites/g/files/n ... _chart.pdf