| Author | Message | ||
     Mb182 |
I Like my fan! MB "Loud Fans Save Lives" | ||
| Daves |
They all use the same fan | ||
| Jlnance |
Is this a perception issue or are the Uly fans really louder/harsher? Daves - Can you tell us how the Uly's are selling compared to the other XB models? And any idea how many new Uly owners didn't own a Buell previously? Perhaps the issue is we have a lot of new Uly owners who didn't have a fan in their last bike? | ||
| Brad1445 |
Teeps Posted on Thursday, August 31, 2006 - 02:44 pm: I've said it before, the whole fan issue is a market quality problem. If the fan was quieter; this would be a non-issue. ___________________ +1 | ||
| Ft_bstrd |
I like the fan. Fans move air. Air keeps by bike from melting. Fans are good. I just want to make sure my fan keeps spinning. Dead fans do not move air. Dead fans are bad. If you can make the fan quieter while making it spin longer without failure, great. If not, I'll take the loud fan, thanks. I like air. | ||
| Pwnzor |
I took the stock right side scoop off completely. I can see my motor, and I can hardly remember what my fan sounds like. No pinging, either. Even riding in 100+ weather. I will admit I'm usually under 4k rpm though. (Message edited by pwnzor on August 31, 2006) | ||
| Snowscum |
Thats the key to keeping that motor from over heating. Keep the rpms loooooowwww. I noticed if you hot rod it at all the heat comes a flowin. A damn shame! | ||
| M2nc |
Since the temps started dropping around here, the fan does not come on between home and work. 11mi. As a matter of fact, under "normal" riding conditions the fan on the Uly in stock condition does not come on much when I am riding in temps under 80°F. So when riding to work in the morning in mid-sixties temps, the fan does not come on even with a 0-70mph-0-70mph-0-70mph some six times in eleven miles. A valuable tread for sure Teeps. Even though the result may not have been what you were looking for, it seems the added benefit of the Right Scoop is just cooler air getting to the sensor so the fan does not turn on when it should. As far as for the Pinging, take the bike to a dealer that knows something about Buells. My bike also pinged when I first bought it in high temps. But Lee at Shelton's HD reset the timing and reset the TPS on the bike during the 1000 mile service and it has gone almost completely away. I have heard it ping a few times in the last 12,000 miles in 95°F+ temps when I lug the bike at about 2000rpm. | ||
| Teeps |
M2nc Posted on Thursday, August 31, 2006 A valuable tread for sure Teeps. Even though the result may not have been what you were looking for, it seems the added benefit of the Right Scoop is just cooler air getting to the sensor so the fan does not turn on when it should. Thanks. You and a couple of others here, might be correct about the additional air flow just cooling the sensor. However, I'm not convinced. I do not believe that cooling the exposed (to the air) part of the ET sensor has any affect on its value. M2nc, Care to sponsor me with one, ET sensor that is... I'm not interested enough to buy one or remove the one in my bike, for testing. Looks like too much work... I prefer to ride than wrench. | ||
| M2nc |
I prefer to ride than wrench. We have allot in common. LOL! | ||
| Opto |
I'm curious as to why shutting the engine down then restarting it will prevent the fan from running. I think this is due to two different threshold/activation temperatures for engine off (no oil circulation), versus engine running conditions. You get 100% for that Blake, there are 2 diff thresholds listed in tables in the FM. Teeps, thanks for the testing. I agree with you that the temp sensor being buried deep into the very centre of the rear cyl head where a spark plug might go, will not be affected much by a fan running for at least 30 seconds, but would accurately reflect the real temp of the metal in the cyl head. How fast this metal cools down after the engine is shut down I don't know. Ian | ||
| Ft_bstrd |
So, if the fan doesn't come on with the RSS, does it come on after turn off? Is there any risk of heat sinking after shutdown? | ||
| Aeholton |
Yes, the fan comes on at shutdown after long rides. However, I noticed that the fan doesn't come on after short rides. | ||
| Electraglider_1997 |
Why would anyone want to trick the fan into shutting off when it was designed to keep the oil and head from getting too hot. Far as I'm concerned the fan is doing its thing and my oil tank temp never gets over 200 degrees. About the only thing that I think they should have done was let the fan run in reverse and blow on the rear cylinder when the engine is turned off. I read they fooled with this very concept but for whatever reason (over complication maybe??) they didn't do it. The only good I see coming from all this bitching about the fan noise is that maybe Buell will come up with something better because it certainly is a bone of contention. I kind of like it because it certainly removes the heat off my thigh when it comes on. Way back when I thought it was the opposite but was straightened out by BadWebbers. Thanks. | ||
| Teeps |
For me there are two issues with the fan. 1. the noise level when it is running at full speed. 2. the fan runs when "logic" (as opposed to design) would seem to indicate otherwise. | ||
| Birdmanrh |
Can you explain number 2? | ||
| Motomut |
XB12X owner for two months now. Once my fan comes on it stays on for the rest of the ride; is this normal? Sorry if this is a old question.... I just need to know! | ||
| Aeholton |
XB12X owner for two months now. Once my fan comes on it stays on for the rest of the ride; is this normal? Yes. I believe this would be considered normal fan behavior and my observation for the first 14,000 miles of Uly ownership. However, since buying the aftermarket right side scoop, I have had the fan actually stop running after getting out on the open road after coming on during city riding. Can you explain number 2? I won't speak for Teeps, but I read it as "Why does the fan need to be running when traveling at highway speeds with plenty of airflow across the head rear cylinder head?" | ||
| Chadhargis |
That is my one and only gripe with the fan. Seems like a speed sensor should be installed so that the ECU will know there is adequate airflow and shut off the fan. How much does the fan help if you're traveling at 70mph? Seems like extra wear and tear on the fan. | ||
| Teeps |
Aeholton Posted on Friday, September 01, 2006 - 03:43 pm: Birdmanrh Posted on Friday, September 01, 2006 Can you explain number 2? I won't speak for Teeps, but I read it as "Why does the fan need to be running when traveling at highway speeds with plenty of airflow across the head rear cylinder head?" Thank you Aeholton, and yes you may speak for me, in this case... Guess I wasn't clear on #2, "logic vs design." | ||
| Birdmanrh |
Oh, I guess my logic differs. | ||
| Diablobrian |
I think people are mistaken in thinking there is a serious ram air effect from the factory scoop. Even at highway speed without the fan drawing air through the forced air circulation is less than you may think. Most "ram air" systems do not really produce an effect until you are at, or close to triple digits. They are more truthfully named "cold air induction", but that doesn't sound as sexy as ram air to most consumers. The turbulence caused by the front of the bike will lessen the amount of air taken in by the scoop dramatically. Remember that ideally you want a ram intake to be on the front, center of the leading edge of a shape moving through the air. This puts the intake in the clean high pressure air before the air gets "dirtied up" by the turbulence caused by the bike moving through the air. This is not an option on Buell, except with Hal's X-force induction on a race firebolt. This is a down and dirty explanation in layman's terms, and is highly simplified for the benefit of the less technical board members, and my poor brain cells. I know that there is a lot more that could be said on the matter. It just doesn't need to be. Fall semester is in full swing again!  | ||
| Birdmanrh |
Fluid dynamics maybe?  I wonder what a vortex generator might do on the left scoop? | ||
| Xbimmer |
... or relocation of the fan into there. If it's true that the l/s scoop is not the best positive pressure venue, at least until the rear-located fan activates, then I would think it would be more effective up front and less self-destructive. The now-vacated opening where it used to be eliminates any pressure-related resistance to airflow, the front-mounted fan probably wouldn't need to run as fast. What's missing here? Oh yeah, some sort of r/s scoop. I don't get how the little stocker can be so efficient as to remove more heat from the front head than the biggie, and still direct its flow to cool the fuel system. A properly baffled r/s unit could not only perform the same duty but also put cool air past the rear head and header and out the rear (where the fan used to be) exit. I'm sure I'm just full of it, like how are we now gonna keep the ET sensor hot as hell with all that new airflow around the rear head... | ||
| Xbimmer |
Oh yeah, once again. Fan noise is not the issue with me. My Audi has two fans and on a hot day even under the hood with them screaming they're noticeable from outside the car. It's fan durability I'm concerned about for the longterm. Give me a 100k mile fan for even 2x 3x the price and I'll shut up forever... ... and still run my r/s scoop.  | ||
| Chief |
Birdmanrh don't put a vortex generator in the scoop, if you do as soon as you hit 88mph poof back in time you go. I also don't have a problem with fan noise But I do not want to be replacing this thing every 6,000 miles. I want to know an answer to the previous question "do other XB owners have the high failure rates or just us" | ||
| Birdmanrh |
A front fan would introduce more issues than it would solve. A symmetrical right scoop has issues as well. (I think that was explain above???) I am with you on the fan durability concern. I have not seen a fan fail yet, true I have one that sounds like it has a few bearing loose, but it still runs. Like I stated before, I am pretty darn sure that a vendor search is in the works. The design is solid, the fan it a slightly weak link. Now as far as sound? I don't know there. On the ET issue, the temp is not the issue, the issue is that the ET be programed to know what temps should be where it is to turn the fan on. If you program it to turn on at 10 degrees because at that temp the entire head is 12 and then change the cooling so that area reaches 9 degrees and the rest of the head is 15 you have an issue. Time will tell, but I think they need a different fan vendor.  | ||
| Whodom |
Any idea who the existing fan vendor is? | ||
| Davo |
Part number Y0050.02A8A 04/24/06 was manufactured by SPAL- Correggio, Italy- Type VA48-A101-46S 12V- (quality control ok 12/05) | ||
| Ft_bstrd |
Aren't they a FIAT vendor? |
