UK Karting - Notice Board (2-Stroke Karting) : Re: Rotax Fuel Mixture

Notice Board (2-Stroke Karting)

Re: Rotax Fuel Mixture
Posted by 'raceinstructor' on 29 Jan 2010 @ 10:01

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raceinstructorJoined: August 2007
Total Posts: 2
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Just remember if ading more oil i.e. 40-1 then you are effectively giving the motor more lubrication however your combustion mixture is actually weaker due to the reduced volume of fuel present for combustion so there will be a performance change from that alone, given that there is an ideal Air Fuel Ratio (AFR) to give optimum combustion theroretically 14.7 to 1 however most 2/ motors run better with a slightly higher fuel content of around 15.1 to 1. Therefor by adding oil you are reducing this ratio from the same carb settings used with less oil.

Message Thread:

Rotax Fuel Mixture by 'spider' (28 Jan 2010 @ 21:06)

Re: Rotax Fuel Mixture by 'huxley' (28 Jan 2010 @ 21:45)

Re: Rotax Fuel Mixture by 'gettingquicker' (28 Jan 2010 @ 21:56)

Re: Rotax Fuel Mixture by 'Ditch' (29 Jan 2010 @ 2:02)

Re: Rotax Fuel Mixture by 'raceinstructor' << You are here!

Re: Rotax Fuel Mixture by 'RAF5' (29 Jan 2010 @ 19:47)

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