How much is a V2K speedo off?

[RichLockyer]

Originally Posted by V2K_CCTX

still think its too make us think we are going faster than we are, so squids will have a 15% better chance of not dying!!! the is NO reason for a designed speedo error, and if tire selection etc were the case, cars would have the same reasoning since tons of $$$$$$ is spent on wheels and tires worth twice the value of the vehicle they are on!!!

My "new" '94 Blazer has 225/75-15 tires. Stock size was 205/75-16, and the speedometer is dead-on with the GPS up to about 75, where it's reading 1-2mph slower than actual (1-2% error).
There's a 4.38% difference between the two tire circumferences, which means that with the stock tires, the speedo was between 2.4% and 3.4% faster than actual.

Whatever the actual reason, it's an issue common to all metric motorcycles.

[skip]

Your absolutely right. You spend over 10 grand on a new bike and you can't get an accurate speedo. I'm not impressed at all with Kawasaki speedo's. FIX THEM!!!

Originally Posted by V2K_CCTX

why cant the bike just be built with a proper speedo reading. Understandably turning and leaning will change the numbers, but the most of the time you look at the speedo is straight up cruising down the road.

[Bustcard]

Ophidia, you can use my GPS to see how much it's off if you want to.

[ophidia]

Thanks for the offer, but I can just use one of mine

[ophidia]

I finally got this tested-- 27 at 30, 36 at 40, 45 at 50, 54 at 60, 63 at 70, 72 at 80, 81 at 90, 90 at 100, 99 at 110, 108 at HOLY 5HIT I'M GOING 120!

10% anyway.

[alekkas]

Mine is right around 10% too. Whatever, not much of problem to do that math in my head .....

When new tire time comes, we'll see.

[ophidia]

I'm thinking speedo-healer, myself.

[CruisingEagle]

I had my wife hold the GPS to check out the speed. It was about 10% off through all the speeds. Kawasaki claims this is within their tollerances. I told Kawasaki that if I had the same tollerances on products I produced I would be out of business. Same with the gas gauge not being correct some of the time.

[V2K_CCTX]

back in 1986 i got a new vette. Car and Driver did a test and the speedo said 155 when the radar had 154.77....so WTF cant a motorcycle be as accuate in 2009...i still believe its because the safety conspiracy powers to be want you thining your going faster than you are. there is absolutely NO reason why there should be a 10%+ error in modern day electornic speedometers that arent even getting speed inputs from the wheels. AND if a speedo healer works, then WHY cant the factory "speedo heal" the bikes when designed. There is a PURPOSE to this!

[therogue]

Originally Posted by ophidia

That would explain it. I don't have to open the throttle very far to stop being passed, though. I liked my Sabre (it was actually my first and only brand new vehicle and I spent a lot of time in the saddle), but this Vulcan absolutely smokes it in every way.

Enjoy!

[Slow Ride]

mine is off about 6 mph. I've only used the gps on it once so I could be off some, but close enough for me.

[therogue]

Originally Posted by ophidia

I'm thinking speedo-healer, myself.

That only fixes the speedo though. What about that first gear?

[doug4958]

Originally Posted by therogue

That only fixes the speedo though. What about that first gear?

The gear ratio, is that what you are refering to?

[therogue]

Originally Posted by doug4958

The gear ratio, is that what you are refering to?

Just how short first gear is. A big azz tire and euro gears have nearly fixed my speedo and I'm shifting a lot less. Never need to shift in a parking lot, and city speeds (30 - 40 mph) I never get past 3rd. Now I don't look for 6th gear till I'm doing 75 mph instead of 65. Of course theory has it that correcting the 10% speedo error with gearing means 10% ish HP loss too but the monster can take it.

My stealer tried to sell me a "healer" when I bought the bike. Seemed like a lot to spend when it corrects just part of the problem. IMO

[ophidia]

The short first gear doesn't bother me as my previous bike had a short if not shorter a first gear.

[RichLockyer]

Just ride it like a Valk... put it in 3rd and leave it there.
Tell people it's got an automatic

[JacksonW]

I've got the front & rear pullies. GPS tells me that I'm about 1-2 MPH off on the highway. Close enough, that I have to REALLY pay attention to get a reading.