As was said, most motorcycle speedos are optimistic.
That seems to reflect what I have seen. My 2010 RT was 1-3 mph fast, depending on the speed. My 2011 is less...maybe 2 mph at 75. Nancy's RS is more, at least 2-4 mph optimistic. My BMW is a police bike, with a calibrated speedo, so it is right on, but most modern ones are high by about 5-6 mph. That beats the older ones, that were typically 10-12% high.Since I installed my sat-nav I have noticed that the Spyder's speedo runs fast by only 1.5 mph of my GPS's speed readout. This is closer to "reality" than the 4 mph optimistic reading of my car's speedo and the BeeEmm bike's speedo I was riding prior to becoming a trike owner was 6 mph fast. I have always assumed the sat-nav's indicated speed to be accurate but this could be wishful thinking on my part, I have no information to back this up. :dontknow:
Some of us are Huligans...pps::roflblack:
Not having a dealer is a concern taking it to Hawaii. Riding n the Big Island is awesome. I have been all the states except Florida. I have an old PC800, which I love, and I just never tire the same routes. We have a really good motorcycle dealership that sells and services Honda kawasaki, KTM and others. They are skeptic towards the Can Am.
Mileage depends a lot on how big a windshield you're running.
Most of the time the GPS will give the better indication.
Over here, it is not by law, but it is by design. Most speedos are calibrated to give a true indication based on the full diameter of the standard tire that is fitted. The rolling diameter of the tire is less, thus reducing the effective circumference of the tire when it is loaded and the sidewalls flex. Tread wear reduces the diameter (and circumference) further. As a result, the tire vehicle does not travel as far for each revolution of the tire, but the speedo thinks it does, since it measures the revolutions. The end result is that most speedos read high. Fitting a taller tire can have the opposite effect.A good few years back, when we first started to bolt sat-nav's to our bikes, the question of which to believe, the sat-nav or the speedo, was a topic discussed regularly in the bikers club I belonged to.
We had a couple of serving police motorcycle riders in the club who told us that speedo's were manufactured to read a few percent high by law. The law's intention was never to allow a driver or rider to put the blame on his vehicle's speedo when exceeding the posted limit.![]()
If you'd change that to a "Will have"... :agree:Fitting a taller tire can have the opposite effect.
True for most vehicles. Guess I was thinking about my old dragster days, where low pressures could make a "taller" tire squat more that the shorter, stiffer tire that was replaced. I stand corrected.If you'd change that to a "Will have"... :agree:![]()
That seems to reflect what I have seen. My 2010 RT was 1-3 mph fast, depending on the speed. My 2011 is less...maybe 2 mph at 75. Nancy's RS is more, at least 2-4 mph optimistic. My BMW is a police bike, with a calibrated speedo, so it is right on, but most modern ones are high by about 5-6 mph. That beats the older ones, that were typically 10-12% high.
A GPS is quite accurate, but there are footnotes. It needs to track several satellites for best accuracy, and it will not be 100% accurate on a steep grade, since the satellite sees it as moving on a shorter, flat surface, while the actual distance traveled, up or down a grade, is actually more. The hypotenuse of a triangle is always longer than the adjacent side. Most of the time the GPS will give the better indication.
A squared plus B squared equals C squared, where C = the hypotenuse of a right triangle....LOL
Over here, it is not by law, but it is by design.
I am new to Spyders and this sight. This might be the best forum, I have experienced.
I recently purchased a 2008 Spyder with 4,000 miles. My first extended ride of about 900 miles, I experienced some questions:
1. I averaged 26 miles to the gallon.
2. My GPS shows one trip of 231.8 miles. The speedometer registers 263 miles.
3. The emergency brake quit working and I can't figure out why.
The Spyder runs great, the highway handling is so stable, in the high winds of Texas i was amazed at how secure it felt.
I am really surprised at the fuel economy. Everything I read people talked about mid thirties.