Re: McCormick Deering 10-20 carb freezes up

Posted by Terry Johnson on November 15, 2002 at 18:13:34 from (216.51.195.31):

In Reply to: McCormick Deering 10-20 carb freezes up posted by R. Perry on November 15, 2002 at 17:12:07:

The carb is freezing due to the combination of three things: evaporation of the fuel, the low pressure area developed by the venturi in the carb and the low amibent air temperature with relative high moisture content.

The evaporation of the fuel is essential (basic principle of the carb is mix fuel with the air). The venturi of the carb is required to develope the low pressure area to draw the fuel into the air stream of the carb. That just leaves the incoming air temperature and relative humidity that can be easily changed.

You are on the right track to raise the temperature of the incoming air. Piston driven aircraft utilize heat from the exhaust system to preheat the incoming air to eliminate carb icing conditions. The aircraft carb heat is always recommended to be used in the "full on" position, due to half applications can cause the carb ice to relocate further down stream in the carb around the throttle butterfly, not a good situation to be in while in an airplane.

I would not recommend using electrical heaters or chemicals, due to the possibility of fire or uncontrollable chemical reactions. Stick with what is know to work in this situation.

I'm sure that given the challenge, you and your fellow college students will find a method that works.

Follow Ups:

Post A Followup Name: E-Mail: Subject: Re: Re: McCormick Deering 10-20 carb freezes up Comments: Optional Link URL: Link Title: Optional Image URL: Email Notification: If you check this box, email will be sent to you whenever someone replies to this message. Your email address must be entered above to receive notification. This notification will be cancelled automatically after 2 weeks.

TRACTOR PARTS	TRACTOR MANUALS

We sell tractor parts!  We have the parts you need to repair your tractor - the right parts. Our low prices and years of research make us your best choice when you need parts. Shop Online Today. [ About Us ]