Optimum Outside Temp

[CalRider]

I have noticed that my bike runs best when the outside temp is about 40 to 50 degrees, but I have never had it out in temps much below 40. It could be that it runs even better in those temps???? What would you say is the best outside temp for the bike?

 

[Jack Klarich]

I have noticed that my bike runs best when the outside temp is about 40 to 50 degrees, but I have never had it out in temps much below 40. It could be that it runs even better in those temps???? What would you say is the best outside temp for the bike?

Dont know that there is one once you factor in humidity and elevation, tho my bikes have always run strong @ or below 50:s

 

[Dead Horse Racing]

like jack said theres a lot of factors. i do know we never start a drag race when temps are below 45°f

 

[Hoople]

As Jack said, humidity plays a Big role in how much oxygen there is in a given amount of air. But as you can see even at temps to -13F, the density of air keeps getting larger. (This just shows how much O2 there would be in a given amount of air vs the temperature and nothing more)


Effect of temperature vs air density
Temperature Density of air
in °C vs volume of O2 ρ in kg·m−3
+35 1.1455
+25 1.1839
+20 1.2041
+15 1.2250
+5 1.2690
±0 1.2920
-5 1.3163
-10 1.3413
-15 1.3673
-20 1.3943
-25 1.4224

 

[johnkarlfl]

Not sure about the bike, but I don,t run at all below 40 F

 

[Jack Klarich]

As Jack said, humidity plays a Big role in how much oxygen there is in a given amount of air. But as you can see even at temps to -13F, the density of air keeps getting larger. (This just shows how much O2 there would be in a given amount of air vs the temperature and nothing more)


Effect of temperature vs air density
Temperature Density of air
in °C vs volume of O2 ρ in kg·m−3
+35 1.1455
+25 1.1839
+20 1.2041
+15 1.2250
+5 1.2690
±0 1.2920
-5 1.3163
-10 1.3413
-15 1.3673
-20 1.3943
-25 1.4224

Wow, I had no idea, great find Hoop:s

 

[HarryB737]

I think the optimum outside temp is between 72-75* Fah.... The bikes operator is much happier..

 

[gator508]

I think the optimum outside temp is between 72-75* Fah.... The bikes operator is much happier..

Ha-ha-ha, big 10-4 on that!

 

[Porter]

This morning, it was 26 leaving the house and when I got to work the oil temp gauge read ~180 F. That to me is a big difference over the 240-270F readings I get in the summer when it is 90F+. Air density plus ~100 degree F differnce (at least by my oil gauge) has got to change something.

 

[wv2wheel]

I was also going to say air density and the fact the motor can cool much better. A cool dense air charge always will give a bigger bang...at least that was what I always thought.