There is a temperature drop because of the physical design of a carburetor. If the
temperature drops below the dew point moisture will condensate on the base.
This short article explains it better than a lengthy discussion here:
http://www.flightlearnings.com/2010/03/02/carburetor-icing/

DG


Last edited by Denny Graham; 11/21/2011 11:47 AM.

Denny G
Sandwich, IL