[Red_Baron]

Honestly, I really don't think we should worry about the fan coming on at such a "high" temperature. I'm pretty sure the engineers knew what they were doing.

Cman, I respectfully have to disagree a little with you on the second part of your comment.
Just for fun to name a few:
Pinto exploding gas tank, engineering flaw or purposely trying to control the population? LOL
GM recent starting switches recall due to poor engineering design, shutting off while running.
First Airbags, face scalding, arm and neck braking force when activated.
1993 RX7 thermonuclear heat generating rotary engine by nature, they added a twin turbo that almost touches the rotor housings, plus a small capacity plastic radiator with poor venting.
Results? overheating and coolant seal destruction and a trashed engine. This one is personal, since I've owned one since 1998.
Lucas electronics on British Leyland cars, 3 fuses for the entire electric system. No wonder they all drove with no headlights, if they ran at all.
The Audi fiasco of sudden acceleration, that was found later to be operator error due to gas pedal design too wide and too close to the brake pedal.
ALL these few examples that come to mind on cars only, but not getting into other engineering flaws (airplanes, trains, Titanic, home appliances, firearms, construction, etc).
Yes, for the most part they do get it right, but that is the way it's supposed be, if we want the human race to survive. ;-)
Anyways, point I am trying to make is, engineers do get it wrong sometimes and I still think the fans are coming on too late.

 

[CMan]

Red_Baron, you do have a point and I would be a fool to say engineers get it right all the time. For me, though, I'm not overly worried about it and maybe I should have phrased it that way.

The way I look at it, this engine is in the FZ-09 and FJ-09 and it hasn't been a problem (at least for the FJ-09 folks). I'm assuming it hasn't been a problem for the FZ-09 either, but I can't say that for certain.

With that said, one of the benefits of a popular ECU flash for the FJ-09 was to lower the temp when the fan came on. On one hand I was glad for it as I figured it couldn't hurt, but on the other hand, it felt like the fan was coming on all the time (it wasn't, but it felt that way) and it was a little annoying.

Something funny though... On my ride home this afternoon, I purposefully watched the temp and fully expected to get up to the 220*F range and the fan to kick on since it was 95*F here. The funny thing was for the first time EVER I got almost all green lights! The highest temp I saw was 210*F at the one or two red lights I actually got. The fan never kicked on

 

[Diavelrider]

It's normal, keeps the engine within the correct operating temp. I'd be more concerned if it didn't come on during a warm to hot day in traffic. Being a naked bike, there is not faring to buffer some of the fan noise.

For comparison - My 2012 Ninja 650 fan would come on all the time in traffic, easy to heat and blaster the heat through the side faring - was super hot especially inTexas summers. It didn't have a temp gauge, just a dummy light...never saw that even on 105 degree days in stop and go traffic. I had a R&G radiator gaurd on it too.

 

[yellow_shooz2]

yep in summer time here in Australia my 09 runs mostly at 100deg celcius. .fan kicks in at 105c...The smallest bit of stop start traffic sees the temp rise quickly. ..winter time is ok..The extra warmth is great..but here in summer time wen outside temp is 40+c..it's a warm ride..

 

[Mcsmith]

On super hot days, I find full leathers with perforations keep me cooler. Deflects the sun and the bike heat. Added benefit of keeping my skin on my bones should the worst happen... ☺☺

Sent from my HTC_0P6B6 using Tapatalk

I have found this too. In addition, for longer trips in high heat consider evaporation and dehydration. It seems counter intuitive, but the extra clothing slows the rate at which you lose water in the long run (dehydrate). This is why you don't see people crossing the Sahara on a camel in a tank top and a g-string (it isn't all about sunburn though that is important to think about too).

Read an article about some guys trying to cross Death Valley on some Harley's wearing t-shirts, they made it...in a ambulance. At 120 degrees with 60 mph wind you can't physically drink enough water to prevent dehydration,you have to cover up.

Around town, not an issue, wear what you want. I'm an ATGATT person myself, but if safety was first with us..this would be a Volvo board. Just keep it in mind for longer duration heat exposure.

 

[Red_Baron]

Agree ^^^^ ATGATT and hydration.
To quantify the hydration issue and to keep it easy:
From my race track days, it was recommended 16 oz. of water per hour.

 

[Dayvee]

XSR 900 water temperature

Hi Guys, Just got my XSR 900 a few weeks ago and have also noticed mine temp gets up to about 106C and then fan kicks in and thats in England where its never that warm !! Is the general view they all run pretty hot in the town/traffic, just in the manual they say the temp goes up to 116 Degrees C !!