Gearing vs Indicated Speed
Outstanding HDF Member
Joined: Jul 2007
Posts: 2,241
Likes: 7
From: Daytona, Fla.
Looks like you have an excessive amount of speedometer error. Harley is usually 3 to 4 mph optimistic. You can either look into some of the add on correction gear, a tuner (Power Vision, ThunderMax) or figure what the error is & just do the math. From the sound of your error rate I figure you could just cruise at 5 mph over the speed limit & not worry about a ticket.
Cruiser
Joined: Sep 2012
Posts: 131
Likes: 12
From: Ottawa, Canada
This is for you gearing calculating Guru's. 2007 FLHTC
Out on the highway my sister in law came around me like her *** was on fire. When I asked her what her hurry was, she said I was only going about 63 mph. My indicated speed, on cruise, was 70. My wife says her sporty is showing 65 when my bike says 70.
On my way home I made some checks:
60 MPH, 5th gear, 2500 RPM
60 MPH, 6th gear, 2000 RPM
70 MPH, 5th gear, 3000 RPM
70 MPH, 6th gear, 2450 RPM
The only changes I've made to the driveline is a SE Compensator. The computer has never been plugged into, the bike is stone stock.
Is there something wrong with the calibration of my speedo?
Out on the highway my sister in law came around me like her *** was on fire. When I asked her what her hurry was, she said I was only going about 63 mph. My indicated speed, on cruise, was 70. My wife says her sporty is showing 65 when my bike says 70.
On my way home I made some checks:
60 MPH, 5th gear, 2500 RPM
60 MPH, 6th gear, 2000 RPM
70 MPH, 5th gear, 3000 RPM
70 MPH, 6th gear, 2450 RPM
The only changes I've made to the driveline is a SE Compensator. The computer has never been plugged into, the bike is stone stock.
Is there something wrong with the calibration of my speedo?
Your bike will typically read high compared to actual speed. If it really bugs you, this will correct it.
http://www.xtsportbikeaccessories.co..._HealTech.html
Good luck............................martin
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rfranz1952
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Mar 12, 2008 04:13 PM
