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post #1 of 14 (permalink) Old 06-03-2018, 07:51 PM Thread Starter
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Bike is faster at night

I have a question as i can see Bike is Much more faster and can feel acceleration at night than day. Whats the reason ? I mean at night temperature is lower and thats reason but . I am asking faster becouse that farenheits in cooling system is lower ? Or becouse of AFR or whats the reason ?
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post #2 of 14 (permalink) Old 06-03-2018, 08:10 PM
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Re: Bike is faster at night

A lot of variables with engine performance, but there could be a few things that are night and day.

1. Temperature. Cold air is more dense.

2. Most likely, you live in a very humid place and when it gets cold at night, the temp falls below the dew point- meaning the water vapor in the air falls out. In places at 35 celsius and over 90% humidity cool to 20 degrees, even though humidity remains at 90%, the actual volume of water in the air decreases by well over 50%.

3. Check your air filter and Intake Air sensor for dirt. This may be making issues worse.

"A girl phoned me and said, "Come on over. There's nobody home." I went over. Nobody was home!"

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post #3 of 14 (permalink) Old 06-03-2018, 09:41 PM
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Re: Bike is faster at night

The reason my bike is SLOWER at night is because due to lower light and less visibility I don't twist the throttle as much.
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post #4 of 14 (permalink) Old 06-03-2018, 11:01 PM
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Re: Bike is faster at night

Nighttime and colder months are good for at least 3-5 ft/lbs of torque I swear.
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post #5 of 14 (permalink) Old 06-04-2018, 02:16 AM
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Re: Bike is faster at night

Quote:
Originally Posted by Antonio_beqa View Post
I have a question as i can see Bike is Much more faster and can feel acceleration at night than day. Whats the reason ? I mean at night temperature is lower and thats reason but . I am asking faster becouse that farenheits in cooling system is lower ? Or becouse of AFR or whats the reason ?
Could it be that there is less traffic and so you open the throttle more?
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post #6 of 14 (permalink) Old 06-04-2018, 02:38 AM
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Re: Bike is faster at night

Quote:
Originally Posted by Antonio_beqa View Post
I have a question as i can see Bike is Much more faster and can feel acceleration at night than day. Whats the reason ? I mean at night temperature is lower and thats reason but . I am asking faster becouse that farenheits in cooling system is lower ? Or becouse of AFR or whats the reason ?
It's the same reason 2 air crafts of equal weight in hot Summer will need more runway than in cold Winter. Air is more dense when cold than when hot, so the ram air/engine is getting more air and the cool air keeps engine heat down, heat robs HP. I haven't noticed this effect on my K8 750 but certainly feel a difference in my ram air car, according to my butt dyno.
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post #7 of 14 (permalink) Old 06-04-2018, 04:27 PM Thread Starter
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Absolutly right , you can feel huge differance in cold weather , and is there any way to install somthing to send cold air in engine even in hot days to have great performance when racing or going on drag ? I mean some kind of trick or somthing to install in intakrs or airbox for cooling air more than stock
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post #8 of 14 (permalink) Old 06-04-2018, 04:31 PM
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Re: Bike is faster at night

You could try filling your air box with dry ice? Back in the day when I had an intercooled turbo Mustang, I was told to put ice on the intercooler for performance gain, of course I never tried it.
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post #9 of 14 (permalink) Old 06-04-2018, 05:01 PM
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Re: Bike is faster at night

Dry ice makes co2. I think doing that would starve it for fuel and choke it out.
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post #10 of 14 (permalink) Old 06-04-2018, 05:49 PM
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Re: Bike is faster at night

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Originally Posted by maniac1886 View Post
Dry ice makes co2. I think doing that would starve it for fuel and choke it out.
It was tongue in cheek, I never put a bag of ice on the intercooler neither.

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post #11 of 14 (permalink) Old 06-05-2018, 02:03 AM Thread Starter
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Ye i was thinking on dry ice but i dont know resoults ) abe engine damags or somthing
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post #12 of 14 (permalink) Old 06-05-2018, 02:39 AM
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Re: Bike is faster at night

Quote:
Originally Posted by maniac1886 View Post
Dry ice makes co2. I think doing that would starve it for fuel and choke it out.
Quote:
Originally Posted by Antonio_beqa View Post
Ye i was thinking on dry ice but i dont know resoults ) abe engine damags or somthing
As maniac said, dry ice produces co2 which would likely choke the engine.
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post #13 of 14 (permalink) Old 06-05-2018, 04:44 AM
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Re: Bike is faster at night

Quote:
Originally Posted by Antonio_beqa View Post
I have a question as i can see Bike is Much more faster and can feel acceleration at night than day. Whats the reason ? I mean at night temperature is lower and thats reason but . I am asking faster becouse that farenheits in cooling system is lower ? Or becouse of AFR or whats the reason ?
What are you using for data recording?
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post #14 of 14 (permalink) Old 06-05-2018, 05:57 AM
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Quote:
Originally Posted by Samantha750 View Post
It was tongue in cheek, I never put a bag of ice on the intercooler neither.

You forgot to use sarcasm font. Lol
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