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Post by yaris on Jun 20, 2008 16:28:25 GMT -5
is it normal that when its cold outside my ruck is less powerful and vice-versa? it seem to be like that since I ajusted my valve gap.
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Post by yaris on Jun 22, 2008 11:41:13 GMT -5
anyone?
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Post by Firegut on Jun 22, 2008 15:43:55 GMT -5
Every engine that uses a carburetor is affected by weather changes. When the air gets cold it is more dense. When warm it's less dense. This affects your air/fuel mixture. When you tune your carb, you tune it for a very specific temp. When the temp changes, your carb is no longer tuned as best as it can be. I re-tune mine every time that I take it for a ride (daily) and often more if the temp changes more then 10F degrees while riding. It's a bit of an obsesion, but I like to go faster than my freinds without having to spend a lot of money.
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Post by yaris on Jun 22, 2008 16:50:58 GMT -5
thanks
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Post by pounder on Jun 22, 2008 20:33:30 GMT -5
also when the air is more dense it is harder to push you through it..hence a loss of speed..
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evilkaneval
Ruckster
Hi my name is Justin and I'm a Ruckaholic
Posts: 155
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Post by evilkaneval on Jul 31, 2008 16:39:21 GMT -5
Every engine that uses a carburetor is affected by weather changes. When the air gets cold it is more dense. When warm it's less dense. This affects your air/fuel mixture. When you tune your carb, you tune it for a very specific temp. When the temp changes, your carb is no longer tuned as best as it can be. I re-tune mine every time that I take it for a ride (daily) and often more if the temp changes more then 10F degrees while riding. It's a bit of an obsesion, but I like to go faster than my freinds without having to spend a lot of money. So let's say that my carb is tuned just right at 90*F. If the tempature drops to 70*F would I end up running richer? |
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Post by chanito on Jul 31, 2008 17:55:35 GMT -5
 Actually leaner, colder air is denser and have more oxigen per volumen, so you need to get more gas to burn the extra oxigen 
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8chpl
Ruckster
Posts: 158
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Post by 8chpl on Aug 1, 2008 16:27:01 GMT -5
I lose about 3km an hor, around 2mph from summer to winter. I drive when it is -8C or about 18F.
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evilkaneval
Ruckster
Hi my name is Justin and I'm a Ruckaholic
Posts: 155
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Post by evilkaneval on Aug 1, 2008 17:16:21 GMT -5
Oh, okay right makes sense.
I feel as though weather has a very strong effect on intake, which is a pain because, I ride all day and night and there are a lot of times when it will be 90*F during the day and then at midnight be 68*F. Also, even more then temp., I think barometric pressure causes changes in performance.
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evilkaneval
Ruckster
Hi my name is Justin and I'm a Ruckaholic
Posts: 155
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Post by evilkaneval on Aug 2, 2008 1:38:52 GMT -5
I've got this idea on how to make minor adjustments to my air/fuel mix without rejetting to compensate for varying weather conditions. Not sure if it would work like i'm thinking.  As you see my filter is mounted on this hard pipe. I have the option of clamping the filter directly on the end of the pipe; or slide it further in and have the pipe stick inside the filter till the pipe almost hits the back. Now im wondering if there would be a change in volume of air entering carb, or just create turbulant airflow. |
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