| Author | Message | ||
     Oldnotbold |
If you have used jet-hot on your headers(06 Uly), did you polish them down before you sent them to jet-hot? | ||
| Mb182 |
Not needed,, they will sand blast before coating. MB | ||
| Ft_bstrd |
Anyone have any pics? | ||
| Stevem123 |
I have one on order from Appleton and will post a pic when I get it. BC Steve | ||
| Mb182 |
American Sportbike does exchange @170 less core charge Here is a pic from their site MB  | ||
| Ft_bstrd |
Oooooooooooooooh! Shiny! I really like the color of the stock pipes. Are there any pictures of the other color coatings they have? I have looked and only found chromey and black. | ||
| Teeps |
Give these guys a call: http://www.specializedcoating.com/ They do good work and it won't break the bank. | ||
| Fubar |
The real question is, "How much difference does it make temperature wise?" I too like the color of the stock header and take pride in the fact that I have no shiny bits on the bike. If it does indeed make a big difference, I would consider doing it in black. Thots? | ||
| Mb182 |
Do a search Al at AM Sport bike (I think) did a test and the silver is MUCH better at reducing temp - @ couple hundred degrees if I recall.. Black doesn't drop much.. I have black ceramic pipes on my cruiser and can attest to that! The shiney does dull and there is a polish out there for them.. I wonder how it would work to get silver on inside and black on outside?? I too like the lack of stuff to polish! MB | ||
| Opto |
If the headers shine your right leg will run a lot cooler, if that is what you are asking. | ||
| Homer |
Even with the silver Jet Hot the pipes still get *very* hot. When I was putting mine on I ran the bike for a minute or so and then accidentally touched the pipe trying to tighten a bolt. It made a nice blistered burn and I learned another little lesson  | ||
| Mb182 |
here is a link to the ceramic header temp test thread http://www.badweatherbikers.com/buell/messages/3842/179639.html?1146019343 MB | ||
| Buellysses |
Just got an e-mail back from Jet-Hot, which was inconclusive regarding the question of silver inside and black outside. It was full of all the same marketing stuff from the website. perhaps I'll try again. | ||
| Oldnotbold |
BTW, has anyone had a problem with the O2 sensor after the JET-HOT application? | ||
| Buellysses |
More ambiguity... Dear Andrew, The sterling silver coating is the base coating. This coating would be applied in&out 1st. If you choose to go with the colors (black blue or grey), they are then applied on the outside. The inside will keep a grey finish. Thanks Chris Jet Hot Now, is this the standard coating procedure for the non-sterling coatings, or is he explaining how they would do a 'special' silver in, black out header? ... maybe third times' a charm. | ||
| Buellysses |
Alrighty, According to Chris at Jet-Hot, the colors are only a top coat over the already applied Sterling formula, which makes me wonder why there would be such a difference in performance if only the final coating the heat 'sees' is different. This would also explain why the colors are $50 more. (Message edited by buellysses on August 09, 2006) | ||
| Mb182 |
Buellysses I went back to the link about the coating in Knowledge vault and found Al Lighton's post with the following explination; Back in the other quickboard thread that spawned this thread, http://www.badweatherbikers.com/buell/messages/4062/175883.html , I wrote something that should stick with this thread. Jet hot is what we use in our header exchange program. I have them coated on my bikes, and it holds up well. I have silver. Some want black ($20 more), due to cosmetics. But I often talk people out of black. TO understand why, here's some tech talk. The Stefan-Boltzmann Law: Radiation Power ( * absporptivity ) = emissivity * Stefan's Constant * Radiation Area (Temperature of Radiator^4 - Temperature of surroundings^4) Since the temperature difference between your frame and leg and even the ambient surroundings is substantially lower than the temperature of your header, radiation heat transfer is a very significant part of the heat that is coming from your header. At slow speed, it may be the predominant mechanism, moving more heat than convection. At speed, I imagine convection is the predominant mechanism, but I haven't done the math. Assuming all else is equal, we can look to the emissivity of the surface to see what the difference is between a black header and a silver header. I cant find specific data on the Jet hot coating emmissivities, but I can make an educated guess from the table here: http://www.infrared-thermography.com/material-1.htm The emissivity of black is likely in the .90-.95 range, and the emissivity of the silver is likely in the .25-.4 range. The emissivity is a linear term in the radiation heat transfer equation, and it is 2 to 3 times higher for the black than it is for the silver. So it stands to reason that the amount of heat radiated to your leg and frame from the black header is going to be 2-3 times higher than for silver. The goal is to keep the heat in the exhaust stream for best scavenging. Since black radiates heat better, it is removing more heat from the exhaust gasses than silver. Can you measure the difference on a dyno? I dunno. But the heat transfer to my leg is the reason why I choose silver. Buell has indicated that heat to the frame may contribute to vapor lock issues as well, so anything that helps minimize the heat transfer to the frame is also good. There is conduction from the frame to my leg, so keeping the frame cooler is also a good idea for personal comfort. } Looks like the color/surface texture not the material is the issue. MB (Message edited by mb182 on August 09, 2006) | ||
| Theloftus |
Hey guys, take this for what it,s worth. I have had conventional header wrap on my springer for three years now and have had no header failure issues...avg 10k a year in all types of riding conditions... cheers... | ||
| Soloyosh |
Looks like the color/surface texture not the material is the issue. Correct me if i am wrong but emissivity applies to the direction of the energy input. By that I would say that having the Sterling inside and black outside would be not significantly different than an all Sterling header. | ||
| Buellysses |
I suppose the proof is in the puddin' if Al's experience says Sterling's better... I'm growing to the idea of a shiny header on the black uly. breaks it up a bit. |
