| Author | Message | ||
     Brucelee |
Normally I hate to hear this fan run after I shut the bike down. So, my plan to eliminate this is as follows: I ordered the right side air scoop from Trojan products. I ordered some Red Line Full Syn 20W-60 oil for the next change. I will let you know if this does the trick. Imagine, a fanless XB? | ||
| M1combat  |
I don't recommend it... I took the breather off of the rear head when I was installing my Force pipe. NO sludge what so ever in there and the bike has 11,200 miles. That fan isn't really about keeping the bike cool when it's moving. It's about cooling the heads after you shut it off so the oil doesn't bake in the head. I vote for leaving it. If you don't like what it sounds like when you turn it off... Be less vain. | ||
| Glitch  |
If you don't like what it sounds like when you turn it off... Put some miles on that bike. I've noticed mine not running as often as everyone else's and thought there was something wrong. Had it checked out and found that the bike runs cooler after it's fully broken in. We're talkin' really broken in 10,000 miles plus is broken in. I have well over 30,000 and like I said, the fan runs less than other XBs with fewer miles. Also, what M1 said about cooking the oil, he's right ya know. Not recommended unhooking the fan. Big bad no-no! (Message edited by Glitch on February 10, 2005) | ||
| Brucelee |
Never said that I was taking the fan off. I meant that I was trying to find a way to keep the puppy cool enough so that the thermostat does not activate the fan after shut down. IE, there is no need for cooling air at all. If it comes on, it comes on, as it NEEDs to do so. But what if I can keep the rear cylinder cool enough with these two changes, that would be a good thing, no? (Message edited by brucelee on February 10, 2005) | ||
| Ptrumble1  |
Don't do it | ||
| Glitch |
Oh I gottcha, I mis-read. Yes that will make the head cooler, and your fan run less. It'll still run with all you have listed, just not as long. | ||
| Kowpow225 |
I'm following you brucelee. You're not disconnecting anything. Your going to try a different approach at keeping it cooler with the use of better oil and more airflow towards the back. I've eyed those right side air scoops myself, but haven't forced myself to part with the cash yet. Let us know how it works out for you, and if it keeps the rear cylinder nice and cool. I've taken some measurements from the left side scoop and found that it'll be impossible to build a right side scoop of the same size. It turns out the exhaust header is in the way. | ||
| Buelliedan  |
The synthetic oil will not make your bike run cooler. That is a big myth about synthetic. Synthetic is just better able to take high heat Vs. conventional. Blake is really knowledgable about this subject and corrected me when I thought thew same thing. | ||
| M1combat |
I thought you were trying to delete it as well... My bad  . My fan rarely comes on at 11K miles. Even after a hard run it'll just run for maybe 5-10 seconds on low. I do have a techlusion though, so it's running less lean. I think that's the best place to start as it adds HP too . | ||
| Wyckedflesh  |
So the thermalgraphic image comparison done on TopDead Center was innaccurate showing a 10°-15° difference in favor of the Synthetic oil? They let the V-Twin idle for 10 mins until the temp range stabilised with the Dino oil, then drained it and did the same with the Synthetic. The Synthetic also stabilised itself quicker then the Dino oil. By stabilised I mean the heat signitures on the thermalgraphic camera went unchanged as it sat. | ||
| Xring |
It was my understanding that synthetic oil DOES let the engine run cooler; either due to increased efficiency (less friction=less heat) or because of better thermal conductivity of synthetic oil. Somewhere saw where somebody had non-contact thermometer and did before/after with conventional vs. synthetic motor oil (in a Buell). Showed a significant reduction. Of course, I don't believe everything I see on the 'net, but it sounds reasonable. Bill | ||
| Buelliedan |
Like I said I used to believe the same thing. Then Blake showed me some things that made me feel stupid. I'm not saying synthetic is bad, in fact it's all I use, just that the belief that it will run cooler is false. | ||
| Buellman39 |
Imagine A Fanless XB I think its just one more thing that sets the buell apart from everything else. Besides it really is there for a reason. Even if synthetic would make it run a little cooler it not enough not to make the fan run. Being an air cooled motor with the sensor for the fan on the head. You would have to drop the oil temp down pretty far. | ||
| Fullpower  |
i am thinking that a 20w50 oil would be more appropriate. 60 is MORE viscous, and is not recommended for your engine. | ||
| Hanses25  |
My buddy KCcyclone rides a 99 M2, and when we all get off our bikes and turn the keys off, he has to stand there and make a fan sound for his bike. I guess to fit in, and be cool.  | ||
| Wyckedflesh |
One thing I am contemplating is adding a second oilcooler inline with the first, mounted on the opposite side for the Summer Heat. | ||
| Whitetrashxb |
i saw the same episode as Wycked is referring to, and they were definitely making a blatant point that the synthetic was allowing the motor to run cooler.. so that is a false statement? thanks james | ||
| Wheelsleaning  |
I have seen the XB12 do burnouts at a dead stop in the middle of 90 degree weather while running at the rev limiter until the tire was only 2 little bands on each side of the wheel  . So, I don't think anyone has to worry about the temp of a buell motor. | ||
| M1combat |
"One thing I am contemplating is adding a second oilcooler inline with the first, mounted on the opposite side for the Summer Heat." Ditto . | ||
| Blake |
You have a fan and an oil cooler and a big heat sink of an aluminum swingarm/oil-tank and you think it is a good thing to add another oil cooler? You are fixin to screw up your engine. | ||
| Brucelee |
From the AMSOIL web site. " In addition, synthetic oils inherently reduce sump temperatures so the engines actually run cooler." | ||
| Brucelee |
More: "8. Help the engine to run cooler- Roy Howell of Redline Synthetic Motor Oil Co. says "Synthetic oil has 10% better heat transfer than Petroleum based lubricants." What this translates into is that synthetic oil does a better job of dissipating heat in an engine than petroleum based oils. This allows the engine to run cooler overall. Oil temps have been proven to run up to 50 degrees cooler with synthetic oils. The following is taken from an article titled "Synthetic Oil: Rx For Long Engine Life" by Curt Scott. "The remarkable ability of synthetic oils to reduce internal operating temperatures is far too important to ignore, since high operating temperatures contribute directly to premature failure of mechanical components and gaskets and seals. Coolant cools only the upper regions of an engine. The task of cooling the crankshaft, main and connecting rod bearings, timing gear and chain, the camshaft and its bearings and numerous other components must be borne entirely by the oil. There are three identifiable reasons why synthetics do a better job of cooling an engine. 1. Because both the oil's lubricity (slipperiness) and it's stable viscosity, less friction and thus less heat is generated in the first place. 2. The molecular structure of the oil itself is designed to more efficiently transfer heat, even compared against the thermal conductivity properties (ability to absorb and dissipate heat) of an identical viscosity. 3. As mentioned in the preceding paragraph, the more rapid oil flow of these lower-viscosity synthetics contributes significantly to the efficient transfer and dissipation of heat. Because of all these factors, oil temperature decreases of from 20-50 degrees are quite common with the use of synthetic oil. One might even say that the heat-reduction properties of synthetics are synergistic…by helping to reduce its own temperature, the synthetic oil is simultaneously enhancing the lubricant's overall performance characteristics." | ||
| Thansesxb9rs  |
Royal Purple states that its new motorcycle oil can reduce temp by 10 to 15%. If all these companies are stating incorrect facts then why are they not being sued for misrepresenting their products to the general public? | ||
| M1combat |
"You are fixin to screw up your engine." Would you mind explaining how? I understand that an engine has to come up to operating temperature, but I'm figuring that because Wycked and I live in AZ (Where it gets fairly warm in the summer, and doesn't get cold in the winter) maybe we could lower our operating temps to somewhere near the same range as someone living further North and maybe extend the life of the engine a little. Am I wrong? | ||
| Reepicheep  |
I suspect that Blakes point is that putting a heat radiator on top of something hot to try and make it cool might not be the best approach. The other side of the engine is already a heat radiator, and you would then be covering it up, with something hot no less. That would be my guess anyway. The existing radiator is actually quite a distance from the jugs. | ||
| Wyckedflesh |
Honestly Blake, thank you for reminding me of the cooling effect of the swingarm. But the big thanks goes for inadvertantly getting me to rethink WHY I want the second cooler. My choice of a second cooler is to disipate more heat, which in theory is a good idea, however I think the practice as you pointed out might be fruitless. If my ambiant air temp is 100°, then the oil won't cool down much more with the second cooler then it already is with the stock system. What I need to do is determine a way to combat the poor quality fuel AZ has during the summer months when the ambiant airtemp is in the 100°+ range. | ||
| Reepicheep |
(sorry I keep inserting myself here)... I bet Buell has already done this for you with the fan. 99%+ of us could probably pull the fan the day we bought the bike, and not know a difference for the next 40,000 miles. .0001% of us would drop a valve or score a jug on a high speed run through death valley running crappy gas, or running the autobahn from Munich to Nurenburg, or crusing around AZ at 100+ on cheap gas Buell put that fan on for those people, the rest of us get it for free. | ||
| Wyckedflesh |
BTW Reep, my plan was to duplicate the stock oil cooler on the right side of the bike, but without the actual scoop, just having it turned flush into the wind. | ||
| Glitch |
If ya add another oil cooler, you'll not get the oil hot enough to evaporate the moisture. My Bandit would run so cool in the winter the oil would get milky. Had to cover up the oil cooler. On our bikes we have a good sized oil cooler, plus a great big heat sink of an oil reservoir, we need not have any more to cool off a couple of quarts of oil. | ||
| Dale |
The main reason for the fan is to not heat up the gas. That is way the fan runs after shut down. |
