 Speedo testing? |
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| bandjoey |
 Sep 28 2009, 04:48 PM
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#1
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bandjoey  Group: Members Posts: 4,934 Joined: 26-September 07 From: Bedford Tx Member No.: 8,156 Region Association: Southwest Region  |
Is there a way to test the accuracy and or adjust the Speedo? I know mines reading high or else Clay and Betty really were driving 90mph on the freeway last week. (IMG:style_emoticons/default/w00t.gif) Bill
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| Rod |
Sep 28 2009, 04:52 PM
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#2
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Senior Member Group: Members Posts: 617 Joined: 1-January 08 From: Farnham UK Member No.: 8,526 Region Association: England |
Sat nav. (IMG:style_emoticons/default/smile.gif)
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| underthetire |
Sep 28 2009, 04:52 PM
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#3
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914 Guru Group: Members Posts: 5,062 Joined: 7-October 08 From: Brentwood Member No.: 9,623 Region Association: Northern California |
Use a GPS. Don't know about calibrating it.
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| Spoke |
Sep 28 2009, 04:54 PM
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#4
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Jerry Group: Members Posts: 7,202 Joined: 29-October 04 From: Allentown, PA Member No.: 3,031 Region Association: None 
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QUOTE(underthetire @ Sep 28 2009, 06:52 PM)  Use a GPS. Don't know about calibrating it. (IMG:style_emoticons/default/agree.gif) GPS works great. My GPS was dead nuts on with my A6. My 911 was reading about 3 MPH fast at 80MPH. |
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| stugray |
Sep 28 2009, 05:08 PM
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#5
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Advanced Member Group: Members Posts: 3,825 Joined: 17-September 09 From: Longmont, CO Member No.: 10,819 Region Association: None |
"GPS works great. My GPS was dead nuts on with my A6. My 911 was reading about 3 MPH fast at 80MPH."
IMO you dont need GPS. Just put em on & walk around the pool for a while. IF you wear em TOO High, THEN you might experience the "dead nuts" that Spoke is speaking of. Stu |
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| ClayPerrine |
Sep 28 2009, 05:12 PM
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#6
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Life's been good to me so far..... Group: Admin Posts: 16,487 Joined: 11-September 03 From: Hurst, TX. Member No.: 1,143 Region Association: NineFourteenerVille
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You can do this without GPS if you have some basic math skills.
Get on the freeway, and drive an indicated 60 mph. With a stopwatch, time how long it takes you to go exactly one mile, using the mile markers on the roadside. It should take you 60 seconds. If it doesn't, your speedo is off. They can be adjusted.. if you speedo reads fast, increase the spring tension inside to make it read slower. Loosen the spring tension if it reads slow. |
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| underthetire |
Sep 28 2009, 05:22 PM
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#7
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914 Guru Group: Members Posts: 5,062 Joined: 7-October 08 From: Brentwood Member No.: 9,623 Region Association: Northern California |
QUOTE(stugray @ Sep 28 2009, 04:08 PM) "GPS works great. My GPS was dead nuts on with my A6. My 911 was reading about 3 MPH fast at 80MPH." IMO you dont need GPS. Just put em on & walk around the pool for a while. IF you wear em TOO High, THEN you might experience the "dead nuts" that Spoke is speaking of. Stu Huh? (IMG:style_emoticons/default/burro.gif) |
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| SLITS |
Sep 28 2009, 05:29 PM
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#8
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"This Utah shit is HARSH!" Group: Benefactors Posts: 13,602 Joined: 22-February 04 From: SoCal Mountains ... Member No.: 1,696 Region Association: None  |
***GPS = to small undies = tight nutz
***Grievous Package Scrunch |
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| SLITS |
Sep 28 2009, 05:31 PM
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#9
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"This Utah shit is HARSH!" Group: Benefactors Posts: 13,602 Joined: 22-February 04 From: SoCal Mountains ... Member No.: 1,696 Region Association: None |
see above ....
Sincerely, Mr Thumbs |
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| Shade Tree |
Sep 28 2009, 06:15 PM
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#10
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Member Group: Members Posts: 260 Joined: 18-December 08 From: Springfield, Oregon Member No.: 9,860 Region Association: Pacific Northwest |
Time yourself between two mile markers. Stay at the same speed between the markers. 3600 divided by however many seconds it took you to drive one mile will equal your speed.
Took me 63 seconds to drive one mile....3600/63=57MPH Took me 51 seconds to drive one mile....3600/51=70.6MPH |
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| VaccaRabite |
Sep 28 2009, 08:00 PM
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#11
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En Garde! Group: Admin Posts: 13,765 Joined: 15-December 03 From: Dallastown, PA Member No.: 1,435 Region Association: MidAtlantic Region
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I use a GPS for speed and ignore the speedo, but mainly due to the fact that I can't see the blasted thing anyway.
Zach |
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| bandjoey |
Sep 28 2009, 09:14 PM
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#12
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bandjoey Group: Members Posts: 4,934 Joined: 26-September 07 From: Bedford Tx Member No.: 8,156 Region Association: Southwest Region |
Gps in the speedo hole and a calculator. Can't go wrong with that! Thanks
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