| Author |
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Chadhargis
| | Posted on Wednesday, February 28, 2007 - 05:18 pm: | 
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My fan runs pretty much the entire time I'm riding, but when I shut the bike off, the fan almost instantly goes into low speed mode where it only runs for a short time.
I think my engine is cooling just fine. I'm not messing with something an engineer designed and tested. If a $3 piece of plastic would make the bikes run cooler, then I'm sure BMC would put one on there from the factory. |
Terribletim
| | Posted on Wednesday, February 28, 2007 - 07:24 pm: |
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Glitch, where do you live? I think air temp will dictate how much the fan runs more than riding conditions. I live in Western Washington and last summer we had some crazy days of almost 100degrees, unheard of around here, not that I'm complaining, since I was born in Texas. The reason I say this is, my bike has 10k miles on it roughly, and my fan really only runs when I was on the bike for long periods of time during that really hot summer, and when I got stuck on the freeway in slow traffic. Our traffic is the stuff of legends! But scooting around on the backroads, the fan didn't really run a lot, unless it was 100degrees out. Just my observations, maybe it helps someone out. As for the RSS, I'd love to get one, but they cost a lot! |
Glitch
| | Posted on Thursday, March 01, 2007 - 09:02 am: |
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Tim, I live north of Atlanta, and commute to Atlanta. Believe me, I know traffic, it sucks, it sucks more in the Summer, as you well know.
10,000 miles is just getting broken in. These bikes run cooler after the 15,000 mile mark and get better gas mileage as well.
I know the newer/lower mileage bikes run hotter, and the fans pretty much stay on, mine used to.
I rode yesterday, and the fan didn't come on until I hit some of that ol' stop and go traffic we all love so much, once on the go again it stopped, didn't even come on when I shut the bike off. All without a RSAS. I'd like one though, just can't justify the cost. |
Davy_boy
| | Posted on Thursday, March 01, 2007 - 10:26 am: |
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Hey Glitch what was the temp in Atlanta yesterday ? Still a bit cold here in Jersey !!!Would love to be out right now , once the roads clear and the temps hit in the 40's I'm a ridin !!! |
Teeps
| | Posted on Thursday, March 01, 2007 - 11:19 am: |
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Terribletim
Posted on Wednesday, February 28
I think air temp will dictate how much the fan runs more than riding conditions.
Wrong...
The fan runs based on the skull temperature of the rear cylinder head, and the ECM period, end of story. |
Lost_in_ohio
| | Posted on Thursday, March 01, 2007 - 11:56 am: |
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Tim even with the RSS if I ride at higher RPM's I can get the fan to come on. |
Terribletim
| | Posted on Thursday, March 01, 2007 - 06:46 pm: |
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Teeps-
What I meant was that if the air temp is hotter, the bike is gonna run hotter. Not that the air temp will flip the fan switch.
Glitch-
Riding yesterday, whats up with that!?!? We had snow this morning! And I mean, like 5-6"! |
Glitch
| | Posted on Thursday, March 01, 2007 - 08:39 pm: |
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Yep, it's been near 70o all week, with the lows near 40o. But we're paying for it now, it's come a bad storm, rain, wind, and the threat of tornadoes.
We're getting what just went through Odie's. |
Glitch
| | Posted on Thursday, March 01, 2007 - 08:41 pm: |
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The fan runs based on the skull temperature of the rear cylinder head, and the ECM period, end of story.
while that is true, if it's hot out, the fan is using hot air, so it's not cooling as well as it would in less extreme temps. |
Dcmortalcoil
| | Posted on Thursday, March 01, 2007 - 09:08 pm: |
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The fan coming on frequently while in cruising speed (3000-4000rpm) can mean that the bike is running LEAN. That can happen if you change the exhaust or filter without compensating the fuel (like using Race ECM). Or it could also happen in high altitude. Resetting the A/F might work. |
Dapope
| | Posted on Saturday, March 03, 2007 - 03:25 am: |
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I rode a few weeks ago with an outside temp of 35 Degrees. After about 20-25 min on the freeway doing 65MPH, pulled in the garage and the fan was roaring like always.  |
Wazza
| | Posted on Saturday, March 03, 2007 - 09:15 pm: |
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My fan runs all the time. I have 23000km on engine and tried synth oil and fan still runs all the time at high speed when riding. Only time its not running is first few minutes in morning. When I stop fan continues to run on high briefly before dropping to low and shuts off after no more than 1-2 minutes max. Start up again after say refueling and fan switches on almost straight away or certainly before rejoining highway. |
Teeps
| | Posted on Sunday, March 04, 2007 - 11:33 am: |
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Glitch
Posted on Thursday, March 01, 2007
Teeps said:
The fan runs based on the skull temperature of the rear cylinder head, and the ECM period, end of story.
Glitch replied:
while that is true, if it's hot out, the fan is using hot air, so it's not cooling as well as it would in less extreme temps.
The aggravating thing is the fan runs even when the ambient temperature is not so warm.
And, it's louder than the freak'n exhaust! |
Glitch
| | Posted on Sunday, March 04, 2007 - 11:50 am: |
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It's your bike's way of making sure you know you own a Buell. 
The fan never has bothered me.
It seems to really get on some people's last nerve. |
Kdan
| | Posted on Sunday, March 04, 2007 - 11:52 am: |
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It seems to really get on some people's last nerve.
Go figure -  |
Teeps
| | Posted on Sunday, March 04, 2007 - 07:56 pm: |
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Don't get me wrong, I wouldn't sell the bike because of the fan noise.
But, I think that Buell could make a small software change in the ECM and improve the rider experience by a major %. |
Terribletim
| | Posted on Monday, March 05, 2007 - 04:59 pm: |
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Well, the fan noise is going to be dictated by fan rpm. For those of us who play with PCs and cooling fans on CPUs, you will know that to cure noise from the fan, you put a bigger fan on it and slow the RPMs of the fan. Can Buell do that? Probably not, don't know if they have room for a bigger, slower fan. The bottom line is, the engineer said "we have to move this much air too cool it" and that size, speed fan was the answer. You can't cure it 'till you slow the fan RPMs, and then you don't push enough air to cool it. It kind of bugs me when I shut it off and everyone goes "is it gonna blow?", but it is always a good conversation starter! And if it is louder than your exhaust, get a Drummer! |
Glitch
| | Posted on Monday, March 05, 2007 - 05:21 pm: |
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I just tell the on-lookers, it's my "after cooler" |
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