The Ford Barn

Gold Digger · 07-01-2016, 04:39 PM

One of my "A's" with a round speedometer works fine but reads 45 when I'm only going approximately 35 mph. Is there some way to recalibrate rather than send it off and get it rebuilt?

dennis lumbert · 07-01-2016, 05:11 PM

Have you checked the odometer for accuracy on a measured mile ?If it is accurate the problem would be in the speedometer. If it is also reading high,(more than a mile),you may look into installing a larger speedometer drive gear to slow it down.

Rex_A_Lott · 07-01-2016, 05:42 PM

Do you have the correct size tires/wheels on it? That will also throw it off. Good Luck

Gold Digger · 07-01-2016, 05:45 PM

I've got the right size tires and wheels but I haven't checked the odometer. I'll do that.

VFRhugh · 07-01-2016, 10:23 PM

Sponsored Links (Register now to hide all advertisements)

I fount this very helpful getting my speedo working. My speed is accurate the odometer not so much compared to a GPS.
http://www.modelahouse.com/tech/spee...r/fischer.html

07-01-2016, 04:39 PM	#1
Gold Digger Senior Member Join Date: Nov 2011 Location: Arkansas & Alaska Posts: 643	Round speedometer recalibrating One of my "A's" with a round speedometer works fine but reads 45 when I'm only going approximately 35 mph. Is there some way to recalibrate rather than send it off and get it rebuilt?

07-01-2016, 05:11 PM	#2
dennis lumbert Senior Member Join Date: Feb 2011 Location: central Arkansas Posts: 150	Re: Round speedometer recalibrating Have you checked the odometer for accuracy on a measured mile ?If it is accurate the problem would be in the speedometer. If it is also reading high,(more than a mile),you may look into installing a larger speedometer drive gear to slow it down.

07-01-2016, 05:42 PM	#3
Rex_A_Lott Senior Member Join Date: Jun 2011 Location: Upstate South Carolina Posts: 794	Re: Round speedometer recalibrating Do you have the correct size tires/wheels on it? That will also throw it off. Good Luck

07-01-2016, 05:45 PM	#4
Gold Digger Senior Member Join Date: Nov 2011 Location: Arkansas & Alaska Posts: 643	Re: Round speedometer recalibrating I've got the right size tires and wheels but I haven't checked the odometer. I'll do that.

07-01-2016, 10:23 PM	#5
VFRhugh Senior Member Join Date: Apr 2015 Location: Texas Posts: 177	Re: Round speedometer recalibrating Sponsored Links (Register now to hide all advertisements) I fount this very helpful getting my speedo working. My speed is accurate the odometer not so much compared to a GPS. http://www.modelahouse.com/tech/spee...r/fischer.html