| Author | Message | ||
     Rsh |
I went to the dealer to get my 1000mi service done even though I have 1400mi, anyway the dyno was open and setup for buells, my stock XB9R made 80.80 hp and 62.47 ft lbs of torque not to shabby. | ||
| Glitch |
Can ya scan it and post it? Not too shabby at all! edited by glitch on July 13, 2003 | ||
| Americanrice |
That is good. Nice run!  | ||
| Anonymous |
Do it again at about 4000 miles. The results may surprise you. | ||
| Prof_stack |
I've heard that also, from a Buell/HD salesman, that the motors aren't really broken in until about 4k or so. So maybe the sensation I have about my XB9S, with 3,100 miles, getting quicker aren't all placebo effect after all.... ![:]](http://www.badweatherbikers.com/buell/clipart/proud.gif) | ||
| Blake |
Robert, Are those results corrected (SAE or STD)? Yes, please post the chart.  | ||
| Rattler |
I wonder what the "smoothing" was set at also?? This affects dyno numbers in the Corrected mode...not much but one HP can be had. Dale A. | ||
| Rsh |
I don't have a scanner, I'll see if I can get one of my friends to scan it so I can post it. If you ever watched American Thunder on Speed Channel when they were doing mods to that project Harley Nite Train at Bartel's (thats where I got my XB) it's the same dyno (Dynojet) the numbers are SAE the smoothing was set at 5. | ||
| Gonen60 |
What is smoothing ? | ||
| Misato |
and also, what is the difference between corrected and not? maybe I should search for dyno 101 | ||
| Aaron |
When you go to generate a chart, there's a control in Winpep called "smoothing". You can set it from 1 to 5. On level 1 you get a much more jagged looking curve. Most people just leave it on level 5 all the time. But Dale is right, sometimes you can get the peak number to go up a touch by selecting a lower smoothing, just because the jagged peaks extend a touch higher. Corrected just means the actual measured horsepower is adjusted before it's charted. It can be adjusted up or down by what's called a "correction factor", or CF. The correction factor is calculated by a standardized formula that considers the barometric pressure, temperature, and humidity of the environment the measurement was taken in. The idea is that using correction, data we take up here in CO can be compared to data taken for example in Florida, in a radically different environment. The correction process is not perfect by any means, in fact I'd say it's the number one source of error. The dyno itself has almost nothing that can go wrong with it that might skew the readings, but the correction process definitely introduces some error. Still, it's far better than no correction at all. Without correction you simply cannot compare two charts taken in different environments, at all. With correction, you can, you just have to be aware that differences within a few percent are meaningless unless the results were taken at the same time, same place, same dyno. The vast majority of dyno charts that you'll ever see will be corrected results. SAE correction is the most common formula used, but the Dynojet Winpep software allows you to choose from a variety of different formulas (STD, EEC, DIN, etc). So it's something to be aware of when comparing charts ... it's invalid for example to compare an STD corrected chart to an SAE corrected chart. | ||
| Misato |
thanks, that really clears it up.. | ||
| Rattler |
Not to be bashing really..but I never pay attention to Bartels dyno numbers....most bike rags, a few years ago where always using their dyno numbers for Products compared or during upgrades. A dyno can be easily manipulated to do this where in fact not much gain is actually occuring. Bartels seemed to be really in with a lot of aftermarket companies at one time for this service....not saying they still are or where, it just seemed that way to me..anywho, I just never trusted any dyno numbers out of Bartels in relation to consumer adds...not in relation to what you posted on your own ride..I'm sure they are good numbers! Dale A. |
