 Speedometer Speed Adjustment ?, Speedometer Speed Adjustment ? |
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| Ken Mikos |
 May 2 2021, 07:31 PM
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#1
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Newbie  Group: Members Posts: 28 Joined: 20-February 14 From: Pgh Member No.: 17,024 Region Association: None  |
How do i adjust the speedometer, reading about 20mph to fast. Thanks in advance for any replies. Ken
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| Dave_Darling |
May 3 2021, 10:36 PM
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#2
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914 Idiot Group: Members Posts: 15,048 Joined: 9-January 03 From: Silicon Valley / Kailua-Kona Member No.: 121 Region Association: Northern California 
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The speedo works by spinning a magnet inside of an aluminum (I think) cup. The magnet more or less pulls the cup around in a circle, but is resisted by a clock-spring that tries to push the cup back the other direction.
The needle is directly attached to the cup, on the same shaft through the middle of the gauge. To change the speed, you would need to change the spring for a stiffer one (lower reading for same RPM in) or a softer one (shows higher reading for same RPM in). Or get a gearbox that goes in between the speedometer cable and the speedometer. --DD |
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Posts in this topic
Ken Mikos Speedometer Speed Adjustment ? May 2 2021, 07:31 PM
TheCabinetmaker What wheels and tires? It makes a difference. May 2 2021, 08:15 PM
Ken Mikos It’s not the tires. Had the Speedometer in for O... May 3 2021, 07:32 AM BENBRO02 You would probably need to take it apart and chang... May 3 2021, 08:12 AM Shivers
It’s not the tires. Had the Speedometer in for ... May 3 2021, 08:30 AM brant unless you have the correct ratio gears... not so... May 3 2021, 08:45 AM Ken Mikos Thanks for all the replies, looks like I’m sendi... May 4 2021, 07:09 AM robkammer During my second drive of my new 74 I noticed that... May 5 2021, 06:53 PM robkammer During my second drive of my new 74 I noticed that... May 5 2021, 06:54 PM brant
During my second drive of my new 74 I noticed tha... May 6 2021, 06:24 AM Superhawk996
Waze says 60 and the speedo says 65. Skinny stand... May 6 2021, 06:42 AM mepstein Even modern cars aren’t usually gps accurate. May 6 2021, 06:32 AM Jamie
Even modern cars aren’t usually gps accurate.
... May 6 2021, 07:23 AM |
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