5th Gen Speedometer Error - In Pictures

Britt · 10-13-2008, 06:11 PM

I know that motorcycle speedometers are typically off, and I have read lots of discussions about this topic. After getting my GPS installed I finally know how much mine is actually off (stock gearing).

I haven't decided if I will eventually get a Speedohealer, but it's nice to have a better idea of my actual speed now!

jobvfr · 10-13-2008, 06:30 PM

WOW -- pretty good pictures!
My speedo reads about 10 mph high at 70mph, I wonder if it varies with
age (68k mi)?
Happy trails

KC-10 FE · 10-13-2008, 08:16 PM

What is that switch on the left side fairing trim piece just behind the mirror bolt?

KC-10 FE out...

Britt · 10-14-2008, 05:03 AM

Quote:

Originally Posted by KC-10 FE

What is that switch on the left side fairing trim piece just behind the mirror bolt?

KC-10 FE out...

That's for my grip heaters.

bbeardb · 10-22-2008, 05:14 PM

Does speedo error also make for mileage error (thus throwing off all our MPG calculations)? I was under the impression that it would. My uncle didn't seem to think so. Thought it was a conspiracy to keep motorcyclists from going to fast. So "they" just messed with the speedo, and not the odometer.

bluespecv03 · 10-22-2008, 06:20 PM

Can you link me to where you got your GPS mount?

DAN-SLO · 10-24-2008, 08:22 AM

Quote:

Originally Posted by bluespecv03

Can you link me to where you got your GPS mount?

RAM features gps garmin mounts for airplanes trucks vehicles motorcycles autos streetpilot quest etrex

This may be the right answer,mine ram mount for tom tom works perfect.

Y2Kviffer · 10-24-2008, 08:32 AM

Looks like we get the same readings Britt. As for the odometer, it appears to be right on.
I see 125 in the max speed window, you've been having fun!! .....hee hee

Britt · 10-24-2008, 09:07 AM

Quote:

Originally Posted by Y2Kviffer

Looks like we get the same readings Britt. As for the odometer, it appears to be right on.
I see 125 in the max speed window, you've been having fun!! .....hee hee

That must have been an odd reflection on my GPS when I snapped that picture, for I would never dream of riding at such speeds on a flat wide open stretch of road...

Britt · 10-24-2008, 09:10 AM

Quote:

Originally Posted by bluespecv03

Can you link me to where you got your GPS mount?

I did a writeup on my setup that may be helpful to you.

RAM Tank Mount for Garmin Nuvi

gradyggg · 10-25-2008, 12:43 PM

yeah looks like everything I;ve read correlates with your gps experiment, 5-10% faster than you're actually going, thanks for the nice pics and info.

Witch Doctor · 11-17-2008, 11:25 PM

I've noticed this too, exact same margin of error as Britt. From my GPS tests I can also say the odometer/trip-meter is perfectly accurate. Stock gearing BTW. It's almost like it's deliberately inaccurate...

Meanwhile, my two old 1981 budget-bike CX500s are dead accurate, up to their max speed (85mph). You can be darn sure Honda could get the speedo right on something as high-tech as the VFR, especially when the odometer is somehow spot-on. My theory is they set it deliberately high in an attempt to improve rider safety.

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10-13-2008, 06:11 PM	#1 (permalink)
Britt Senior Member Join Date: Jul 2007 Last Online: Yesterday 08:56 AM Location: Westmont, IL - Find Me! My Ride: 2001 VFR View my Photo Gallery Posts: 184 Thanks: 4 Thanked 9 Times in 6 Posts	5th Gen Speedometer Error - In Pictures I know that motorcycle speedometers are typically off, and I have read lots of discussions about this topic. After getting my GPS installed I finally know how much mine is actually off (stock gearing). I haven't decided if I will eventually get a Speedohealer, but it's nice to have a better idea of my actual speed now! __________________ 2001 VFR Corbin Seat, Heli Bars, Givi Smoked Touring Windshield, SOS Priority Plus Taillight Modulator, Blue Sea 5025 Fuse Panel, Symtec Grip Heaters, Stebel Nautilus Air Horn, Throttlemeister, Garmin Nuvi 200 w/ Ram Tank Mount, BLS Peg Lowering Blocks "If you have a pulse, these four gear-driven cams pushing 16 valves at 10,500 RPM will quicken it." Tim Carrithers, Motorcyclist Magazine - June 2006

10-13-2008, 06:30 PM	#2 (permalink)
jobvfr Junior Member Join Date: Jul 2008 Last Online: 11-10-2008 06:25 PM Location: Princeton NJ My Ride: 2001 VFR800 Posts: 17 Thanks: 0 Thanked 0 Times in 0 Posts	speedo WOW -- pretty good pictures! My speedo reads about 10 mph high at 70mph, I wonder if it varies with age (68k mi)? Happy trails __________________ Jobvfr

10-13-2008, 08:16 PM	#3 (permalink)
KC-10 FE I FREAKING RULE!!! Join Date: Jul 2003 Last Online: 01-05-2009 12:29 PM Location: Communist Peoples Republic of NJ - Find Me! My Ride: 2000 VFR800fi (Pearl Yellow) 1989 Hawk GT (Italian Red) 2005 Piece Of Shit F150 Lariat (Dark Bullfighter Red) View my Photo Gallery Posts: 1,591 Thanks: 13 Thanked 50 Times in 37 Posts	What is that switch on the left side fairing trim piece just behind the mirror bolt? KC-10 FE out... __________________ Instructor Side Sitting Switch Monkey Motorcycle Safety Foundation RiderCoach USAF Sport Bike Coach Stupid Hurts & Stupid Kills. Don't Be Stupid. ATGATT http://www.rockthegear.org 2000 VFR800fi Pearl Yellow 1989 NT650 Hawk GT Italian Red I don't discriminate, I hate EVERYBODY! Fight Communism, Free The People's Republic of New Jersey!!! RIP TSgt Christopher D Rey 1 Apr 1968 - 28 Aug 2006

10-22-2008, 06:20 PM	#6 (permalink)
bluespecv03 Junior Member Join Date: Oct 2008 Last Online: Yesterday 07:26 PM Location: Winter Springs FL My Ride: 2005 Honda Interceptor VFR800 Posts: 23 Thanks: 0 Thanked 2 Times in 2 Posts	Can you link me to where you got your GPS mount? __________________ Chris Jones 2005 Honda Interceptor VFR800

10-22-2008, 05:14 PM	#5 (permalink)
bbeardb Junior Member Join Date: May 2008 Last Online: 10-25-2008 06:12 PM Location: Longmont, CO My Ride: 1998 VFR Posts: 3 Thanks: 0 Thanked 0 Times in 0 Posts	Does speedo error also make for mileage error (thus throwing off all our MPG calculations)? I was under the impression that it would. My uncle didn't seem to think so. Thought it was a conspiracy to keep motorcyclists from going to fast. So "they" just messed with the speedo, and not the odometer.

10-24-2008, 08:32 AM	#8 (permalink)
Y2Kviffer King Bastage Join Date: May 2008 Last Online: Today 01:48 PM Location: NC My Ride: '00 Interceptor View my Photo Gallery Posts: 365 Thanks: 20 Thanked 31 Times in 26 Posts	Looks like we get the same readings Britt. As for the odometer, it appears to be right on. I see 125 in the max speed window, you've been having fun!! .....hee hee __________________ 2000 VFR800 Yoshi RS3 stainless ZG dk smoke sport tour HeliBars K&N air filter dyno 96.35 hp http://vfrworld.com/forums/fifth-gen...-run-scan.html

10-25-2008, 12:43 PM	#11 (permalink)
gradyggg Junior Member Join Date: Oct 2008 Last Online: 10-25-2008 09:02 PM Location: Socal My Ride: 1st Bike - 1985 Suzuki DS80 Next bike 1985 Interceptor 700 Current Bike- 1999 Interceptor 800 Posts: 5 Thanks: 0 Thanked 0 Times in 0 Posts	5-10% yeah looks like everything I;ve read correlates with your gps experiment, 5-10% faster than you're actually going, thanks for the nice pics and info.

11-17-2008, 11:25 PM	#12 (permalink)
Witch Doctor Junior Member Join Date: Oct 2008 Last Online: 12-31-2008 03:00 AM Location: Marin My Ride: '99 VFR800, two '81 CX500s Posts: 7 Thanks: 0 Thanked 0 Times in 0 Posts	I've noticed this too, exact same margin of error as Britt. From my GPS tests I can also say the odometer/trip-meter is perfectly accurate. Stock gearing BTW. It's almost like it's deliberately inaccurate... Meanwhile, my two old 1981 budget-bike CX500s are dead accurate, up to their max speed (85mph). You can be darn sure Honda could get the speedo right on something as high-tech as the VFR, especially when the odometer is somehow spot-on. My theory is they set it deliberately high in an attempt to improve rider safety.

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