| Author | Message | ||
     Hkwan |
Just wondering if anyone has verified his/her speedo on the XB against a gps, mile marker, another car, etc. to see how accurate speedo on the XB is? I've heard that the speedo, unlike that of the jap bikes, are more accurate. Within 2 - 3% accuracy at cruising speed(?) On the Jap bikes, up to 8 - 10% swing at certain speed range (that's why some coming makes a living out of selling Speed healers; and many buy them not just on modified gearing bikes). | ||
| Daman |
I drove past those radar sign displays once. It said I was doing 47mph and the speedo was floating around 45-47mph. Thats as far as I know. It could be off at higher speeds. I think also that the speedo will be off when you are leaning the bike over cause the circumference of the tire changes. | ||
| Kaese  |
I have a mileage check near my house and determined that it was pretty close to being right on. (not more that 1/10 off on the measurement). | ||
| Hkwan |
Thank you all for the info. I was just asking about how accurate the speedo is in general and not really when it is leaned over or what not. Kaese, would you please clarify the 1/10 off comment. You are not saying it is 10% off, are you ? That is a huge margin of error if so. Thank you once again. | ||
| M1combat  |
Actually... 10% would be a smaller error than most at max speed. My XB12R reads right around 139MPH when actually at about 132-135. That's VERY accurate compared to the japanese and Italian bikes. From what I hear, they tend to be off by about 15% or better at top speed. | ||
| M1combat |
Also... Tire pressure, size and profile will affect the reading. Your best bet is to forget you have a speedo and just use the tach and/or sound. | ||
| Hkwan |
M1, they are for sure not off by 15%. My F4i isn't off that and many people have put their bike up against a gps and didn't find 15%. That percentage is a lot. Even 10% is a lot. I think I'm more interested in the speed range of ~55 mph to 90mph. That's like the speed I would be doing on a freeway. So I take it that the XB/Buell's speedo is as "in"accurate as those on other bikes then. Too bad. Thank you once again. | ||
| Coldwthrrider  |
I have a GPS mounted on the handlebars of my 9R. The bike speedo reads about 2-3mph high around 60-70mph. | ||
| Hkwan |
Sounds good Coldwthrrider. That isn't bad at all. | ||
| Fullpower  |
mine is pretty darn close. reads 1 or 2 mph high compared to radar at any sane two digit speed. worn down tires do turn faster though. | ||
| Chainsaw  |
Mine reads about 3-5mph fast at highways speeds, verified by a Wyoming State Patrolman.  | ||
| Aztec12r |
I generally gage my speed my the size of the bug SPLAT on my face shield. That's just me though. | ||
| M1combat |
I said at max speed. The Japanese bikes are known for being quite a ways off above 150. In any case... Hkwan - "So I take it that the XB/Buell's speedo is as "in"accurate as those on other bikes then. Too bad. Thank you once again." Then - "Sounds good Coldwthrrider. That isn't bad at all." That second one... Uhh, yeah, that's what I said. | ||
| Surveyor  |
Cops said I was doing 105.....so did my Speedo!! | ||
| Rockbiter1 |
my speedo (on my FXD) is dead nuts accurate, for milage at east. Stop on the freeway at a mile marker. Milemarkers are usually very precise. Reset your trip meter. Drive 10 miles (or 5 miles, and double the diffrence) If your speedo says 10.1 miles, and you've gone 10.0, then you know there is a 10% diffrence. The longer your test data, the more accurate you can guage your accuracy (heh heh) There are other methods (flying mile, clock your time to travel 1 mile @ 60 mph, and calculate it from there), but thats more complicated to do, and above my math skills. | ||
| Starter  |
Ummmmm, a tenth of a mile over 10 miles would be 1%. I have found mine to be dead accurate considering hte width of the speedo needle with the stock tyres and pilot sports at 150km/h. Verified by a Garmin GPS V. | ||
| Rockbiter1 |
i never said i was good at math....but the theory is sound, yes? |
