| Author | Message | ||
     Sgthigg |
Ok, There has been many success posts about the right side scoop at highway speeds helping the engine run a little cooler thus less fan run time. But, can any of these owners verify for me that it actually WILL make and HAS made their bikes run hotter in bumper to bumper type traffis...ie 25mphs or less? I am debating on getting one here in Japan but I wondered if some one can verify the bike will run hotter in parade type traffic until I can get in the mountains a little. Thanks, | ||
| Aussie_xb12ss |
No, mine doesn't make my bike run hotter. Never heard of it either. | ||
| Lamo |
+1 on above but why bumper yo bumper you've got a motorbike go round the cagers | ||
| Towjam |
From the Fall '07 issue of Fuell... Q: Abe, what can you tell us about the “right side air scoop" on the XBs? I’ve seen people fit larger ones (near mirror images of the left side) in an attempt to increase cooling capacity. It seems the smaller one will allow for an increased air velocity and potentially more cooling. What’s the deal? – Ryan, Lightning - XB12Scg owner A: The intent of the right side air scoop is to get better airflow over the fuel rail when the fan is on (at low speed). Getting proper airflow to the fuel rail is important in order to prevent vapor-lock during extended idle or parade duty in hot ambient temperatures. It turns out that if this scoop has too big of an opening, the airflow is not directed to the fuel rail as effectively. In our testing, a right side air scoop created as a mirror image of the left hurt fuel rail temperatures at idle. The left side air scoop was shaped to direct air to the rear cylinder and is very effective at doing that. During our high-speed, hot ambient testing, the front and rear spark-plug base temperatures are virtually identical, whereas on the old tube-twin bikes there was a 100 Degree Fahrenheit difference (rear running hotter. | ||
| Lost_in_ohio |
That is all well and good. But in real world summer chicago surface street air temp low 90's in heavy traffic three XB'x. Mine was the only one with the RSS. I heard the fans on the other two bikes running continuously. Mine came on rarely. The only time I hear the fan is when I turn the bike off. What is parade duty???? 5mph? 10 mph? Does it work??? IMHO yes. Others say prove it or no. We will see if I need a major internal motor repair before 50k or so. To me cooler is better. | ||
| Midknyte |
http://www.badweatherbikers.com/buell/messages/327 77/320236.html?1196525363 | ||
| Lost_in_ohio |
That was an ugly thread. Thanks for bringing back up. | ||
| Midknyte |
I agree. It's not a thread to be proud of, but it did unearth a few facts... | ||
| Smiley1eye |
Yeah, like okra is bad. | ||
| Guell |
mmmmm okra | ||
| Skinstains |
I put a RSS on my 03 9R and thought that maybe by coinsidence the fan broke at the same time. Then I thought that maybe the RSS could be funneling cold air onto the temp sensor only and not cooling the rear jug. I tested the temps of both jugs with a Fluke 179 and found them to be close enough to the same to stop worrying about it and ordered two more for my other XB's. The original RSS has been on a high milage bike since December 2004 with no ill affects that I can detect. | ||
| Vwflat4driver |
cooler is not always better! coming from years of aircooled stuff expansion and contraction play havok with anymotor. aircooled alway run hotter in the head then do water cooled. but too cold and you dont have proper expansion things like head torque require proper expansion. proper warmup is esential to avoid piston wear and such. ever ran a watercooled vehicle without a thermostat. takes a while to properly warm up as well as trying to use heater in cold weather. too cold is just as bad as too hot. theres alot more to be said then this i know but this is as basic as i can make it. i ride an 08 9sx and i have only 5k on and have had the fan come on only one time other then shut down. | ||
| Midknyte |
I would like to see a good hi-res pic of someone's sparkplugs after a year or so with a RSS. The bike venting, ECM, and fan are all designed to work in concert to control the temperature of the rear cylinder (keep it in an operating temperature ranged under these known [designed] features). The last go around at this revealed that the RSS may cause the bike to operate outside of the parameters of the fuel mapping of the ECM. | ||
| Rocketsprink |
I was told by a Buell engineer, (not Abe) to take OFF the RSS scoop when it's very hot out. I have one on my Uly. He's a very good friend and that is a field he is very knowledgeable in. I take him at his word. Lot's of personal testing in Arizona on his part. But, hey, it's your bike. Do what you feel works. | ||
| Sonny |
I have a painted black RSS from American Sportbike I would like to sell. Very low miles. Perfect. Would like $125 and I will ship free anywhere in lower 48. No longer have my Buell. PM me. | ||
| Smiley1eye |
PM sent to Sonny. | ||
| Swordsman |
I never ran with a RSS, but I did take off the tiny slope that comes stock. I thought I was letting a bit of heat escape. Looks like I may have picked the worst of three options: killed the fan's ability to move air, without providing additional flow from bigger RSS! Doh! I'll be putting the stock one back on now.  ~SM |
