| Author | Message | ||
     Fontana_motorsports |
a right side scoop is not going to shroud the front cylinder anymore than the plastic cover does on that side already,remember the front cylinder already runs hotter than the rear due to design.i think it all comes down to the function/weight before looks philosphy....remember the older buells didnt use fans and the X1 limits airflow to the cylinders more than our bikes...did you ever see the x1-m2 fan kit...my friend has one, what a expensive joke!! (Message edited by fontana_motorsports on May 12, 2006) | ||
| M1combat |
Yikes... The specific PLACE that needs to be cooled the most is the area around the exhaust port. The swirl that is purported to take place behind the rear cylinder would help to place the coolest air at that spot. Just adding a scoop and then "taking a temperature reading" won't tell the whole story. You need to take the temperature where it counts. I'm pretty sure that if a right side scoop worked better, Buell would have used one. Why wouldn't they have? I'm sure they decided (just like a lot of you have) that it looks slightly better with w right side scoop. So why didn't they use it? Tooling costs? Drop in the bucket compared to the rest of it. Aesthetics? That's not Buell's #1 game (although they do quite nicely if you ask me). Performance? Probably. | ||
| Glitch |
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| Jimmy |
ththats thjust thsilly thglitch.  | ||
| Chadhargis |
I'll trust Buell on this one. If it needed a right side scoop, it would have one. My fan runs, and it doesn't bother me one bit. I just don't get the fuss over the fan. It works, and that's all that matters. I've never had my bike overheat. | ||
| Glitch |
ththats thjust thsilly thglitch No, what's really silly is all these internet engineers, that think they know better than true life engineers. THNow ththats thsilly! | ||
| Glitch |
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| Old_man |
It was 72 a few days ago, I took a ride, my fan never came on, when I turned it off the fan didn't come on. I checked the fuse, it was OK. The next day another ride, stuck at a light awhile, the fan went on, a few miles later it went on when I turned off the bike. I think that the added miles and synthetic oil cause the motor to run cooler now. It used to run the fan when I shut the motor down all the time. No right side scoop. | ||
| Firebolteric_ma |
   just LMFAO! you guys are to funny.must be why i keep coming back | ||
| Jimmy |
Hey Glitch, If you had a Right hand scoop that wouldn't have happened. The trisickle wooda just flown right over it, Fan or no Fan. | ||
| Gowindward |
No, what's really silly is all these internet engineers, that think they know better than true life engineers. THNow ththats thsilly! Okay, all you want to be engineers put down the pencil and step away from the drawing board before someone screws something up. | ||
| Buellshyter |
There are people with connections to Buell on this site. Why not just one of them ask. I'm betting it wasn't needed in order for the bike to function within perimeters, however; I'm also betting it does help. My conclusion, Buell decided it wasn't worth the added cost for the modest gain in cooling efficiency | ||
| Buell920 |
just because one person made it and another says it keeps the fan from coming on does not mean its good. think about it for just 1 second. the eng temp sensor is in the rear cyl. if you cool the rear with no additional cooling to the front the ecm with react to a perceived cooler eng. if you were to put your bike on the dyno you would see a little less mid and a rich running Buell. not always a good thing.  | ||
| Robino |
oh boy, now a cooler running engine is a bad thing...mmkey  | ||
| Buell920 |
air vs. water cooled 101............ YES! air cooled needs to be hot to operate. cyl expansion, oil temp for flow, so on and so forth... it's scary how many people dont know this. | ||
| Jkhawaii |
has any one taken cly head temperature with and without the side scoop? from what I understand from the factory the front and rear head temperature stays pretty close to each other. maybe with the right side scoop the rear cly is actually running to cold compaired to the rear | ||
| Glitch |
Did y'all think that maybe, just maybe, that a new bike runs hotter than one that's broken in. My fan doesn't always come on, while I'm riding, or even after I shut it down. With full synthetic oil, and regular oil changes, no mods or air scoops, just a Buell Race Kit and header wrap. This is on my bike with 42thousand (s)miles. But if ya want an air scoop on the other side, I ain't sayin' you're stupid, or wasting your money, just buy one, and enjoy your bike. There are plenty of mods out there that make not a lot of sense, but that's fine, just don't expect Buell to come up with a product because a few internet engineers have convinced themselves that this is a product they should endorse. If that were the case, then Buell would have come out with a different velocity stack when that was a big debate. | ||
| Glitch |
Buell920, not a lot of people even think of that I'm sure, I have an old article somewhere about how our engines need to get up to a certain temp just to keep tolerances where the engine is designed to be. It's also why it's not a good idea to run the engine a few minutes at a time during winter storage, or long periods of time that the bike is sitting. If you're not going to get the engine up to full operating temp, it's best not to even start it. maybe with the right side scoop the rear cly is actually running to cold compaired to the rear My rear cylinder has always run the exact same temp as the rear cylinder!  | ||
| Hattori_hanzo |
Has anybody brought up the fact that the original stock air scoop was used to direct air into the AIRBOX through the frame? All '06 and newer XB's have that hole sealed up for extra fuel. The stock scoop now directs the air flow over the motor. So, this is just my opinion, if Buell knew they were going to seal the frame for more fuel capacity, redirected the airflow with the stock scoop to the motor, they saw no need to add the second scoop. I also think that some of the heat people are feeling on the right side of the Ully's may be from this flow of air from the left scoop. Just a thought.... | ||
| Davo |
The parameters of the fan operation during running conditions (key on) are to keep the engine at a constant head temp of no more than 428 F and rarely less than 356 f. If the engineers wanted to make the engine run cooler they would have programed the fan to cut on and off at a lower temp. and/or increase air flow around the engine. By opening up the right side you will make engine run cooler at speed but it may reduce the efficiency of the fan when the bike is standing still. It is for this reason that a "CAT" is not needed for this engine to meet current and future EPA requirements. Anything that makes an engine "CAT" free is o.k. with me!! Fast, clean and "Cat" free! Don't get any better than that! (Message edited by davo on May 13, 2006) | ||
| Al_lighton |
Davo, Where did you get those temperatures from? I'm anxious to know this. Al | ||
| Davo |
Al, I pulled them from the Uly shop manual (4-106). They are the fan program temps. The are very specific. I even watched them cycle during cool down with software and a infrared temp gun. They are on the money. Key on: fan on 428 F----fan off 356 F Key off: fan on 338 F----fan off 302 F It would stand to reason that if the factory wanted the engine to run color then they would change the parameters of the fan and/or open up the air intake, I would like to find out where the overheat/ engine light flash mode begins. I really want to put a temp gage on my bike. It appears a voltage meter scaled from 0-5 volts would work. that is 5-0 volts which is 14 F to 572 F at the ET. Though I don't know if it would throw the ECM off to have it hooked at pin 9 of connector 11 PK/Y wire as a permanent fixture. Also, I want to know if a switch could be installed that would run the fan manually. It would require a switched jumper to ground at pin 6 of connector 11. I am sure this would throw the ECM false readings and trip the engine light or even worse, smoke the ECM!! What are your thoughts on this? | ||
| Al_lighton |
Cool. I didn't know they were in there. I'm going to look in the other year manuals and see what is there. Sure seems like my 06 Uly is fan happy. Al | ||
| Dongalonga |
i personally would buy one for asthetics only, not for the cooliong efficency. it would be heresy to question Erik's engineering intentions with the XB. if he really believed it need the extra cooling he would have put one on. i think looking at the overall quality compared to a jap bike you realize Erik doesnt put the beancounters before the engineering and overall performance of his bikes. if anyone really wants to do this for "performance" reasons i think they are wasting their money and time. if you do this because you want a more "balanced" look to your Buell then you are on the right track and no different than those who purchase the glass or fiber options. this is only my opinion and i am by no means an engineer of any kind, but i do know what i think looks good and thats what i am after here. | ||
| Davo |
Further reflection on the fan issue: Compare the fan to a thermostat on a water cooled engine. The system is not designed to circulate coolant only in extreme conditions. The thermostat is designed to stay closed until the desired temperature and the it regulates the temperature by opening and bringing temps. back down. If the engine had alternative cooling and the thermostat never opened then the engine temperatures could not be manipulated and made uniform. I think the engineers intended for the fan to run most of the time. | ||
| Glitch |
Sure seems like my 06 Uly is fan happy. Wait until the engine is good and broken in. After about 10,000 miles mine ran less and less. Now after 42,000 plus it only runs when stuck in traffic, and after a really hard run in the twisties. There are some mornings when I ride to work, it doesn't even come on after I shut the bike down. And when it does come on it doesn't stay on for very long. | ||
| Dongalonga |
even at 7500 mile i have noticed a decrease in the fan coming/staying on | ||
| Davegess |
OK guys, I gotta think that if the fairly bright crew at Buell Drive didn't put a right side scoop on it is for a good reason. Me; I would be very leary of messing with the cooling system. I know people are saying that it keeps the fan off. Consider this; the right side scoop cools the tempreature sensor enough to keep the fan off but screws up the airflow so that the exhaust valve is hotter AND when the engine is shut off the oil left in the head cooks because ths fan does not come on to keep the air moving. I would not do this. | ||
| Dongalonga |
ditto | ||
| Bbstacker |
Wow! All this info to chew on. I am planning to buy a right side scoop from American Sport Bike. I'm not really thinking about the performance issues. I'm only doing it for looks. (I'm a sucker for carbon fiber) But if there are some negative performance aspects to consider then I don't know. What if you could close it off so it doesn't disrupt the flow of air around the rear cylinder? Then you would have the looks and the function. Besides, explaining what "that noise" is to people at bike night gives me a chance to brag about my bike.  |
