Coolant boiling out?

[6doublefive321]

Originally Posted by Ebbs15

I mean before your neighborhood... (obviously I don't imagine your riding mach 1 through there)

sounds odd about your fan... if your ignition is off but the bike is that hot the fan should continue to run... (at least it does on my bike and every car I've ever owned)

I'd look into that. if your fan isn't running after your bikes off... that's your issue... and potentially a big one... Heat soak is on joke... just becaue the motor is off doesn't mean the bike isn't still heating up... after a good high speed run if you stop you bike and let it sit with the motor off the heat will continue to rise for a couple minutes... same in cars.

Weeeeeeeell, technically, the heat will not rise after the engine is off, but the coolant temperature will rise as it absorbs the energy from the metal, which can cause a boil over. The purpose of the catch tank is to prevent spillage in the exact case described. A spill over could occur if the engine was extremely hot (doesn't sound like this was the case), or if there was too much coolant in the system (don't know if this was the case). I would look for leaks, check the level in the overflow tank, and go from there. I doubt you have a serious issue, but better safe than sorry.

[Mr Lefty]

well in HIS case heat will rise because air is no longer moving over the motor and cooling it... once the air stops... so does most of the heat dissipation. granted no extra heat is being produced... it's just not being dissipated

[Quick281]

Thanks for everyone's replies, I think I can help clear up some of the uncertainty here. It is good to know that the fan shutting off it normal.

I had been on the road into town going about 60 mph most of the way. From there is was about 1/2 of a mile to my house where the speeds were bellow 30 the rest of the way. Because it was wet I was very gentle to the throttle and the engine didn't see over 6k rpm.

I am 99% sure the coolant boiled over from the reservoir through the line that runs down to the ground from the tank. I am also sure that the coolant reservoir was not full because I noticed that it was at about half 1 week ago when I was putting the fairings on it.

On a different note, if I did set up a timing system which allowed the bike fan to run when the engine was off, would it help much?

Obviously the fan would cool down the coolant in the radiator, but with the engine off I would assume coolant would stop flowing and therefore the fan is only cooling down the radiator versus the engine. Or would the minimal air being blown on the motor combined with the cooling radiator make a difference?

[WARputer]

Originally Posted by Quick281

On a different note, if I did set up a timing system which allowed the bike fan to run when the engine was off, would it help much?

Obviously the fan would cool down the coolant in the radiator, but with the engine off I would assume coolant would stop flowing and therefore the fan is only cooling down the radiator versus the engine. Or would the minimal air being blown on the motor combined with the cooling radiator make a difference?

So it was just run off from the bottle overflow. I guess running the fan with the engine off might help but it's not the best for your battery. Next time you service the bike you could try "EngineIce" .....it runs alot cooler .

[Quick281]

I was just thinking about ordering some. If the bike is pulling this crap now, I don't want to know what it will do when it gets Georgia HOT with 100% humidity.

Can I order it as a straight up mix?

[WARputer]

Originally Posted by Quick281

I was just thinking about ordering some. If the bike is pulling this crap now, I don't want to know what it will do when it gets Georgia HOT with 100% humidity.

Can I order it as a straight up mix?

Yes....no need to mix with anything. It's ready to go as is.

[Quick281]

Originally Posted by WARputer

Yes....no need to mix with anything. It's ready to go as is.

Excellent! I am about to 4k miles, and I hope to give my bike a good full service to get familiar with it before riding season really gets under way.

[6doublefive321]

Originally Posted by Ebbs15

well in HIS case heat will rise because air is no longer moving over the motor and cooling it... once the air stops... so does most of the heat dissipation. granted no extra heat is being produced... it's just not being dissipated

Agreed. I guess I'm feeling extra anal retentive tonight. God I'm bored.