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| == Speedometer Calibration == | == Speedometer Calibration == | ||
| - | Factory speedometer tolerance is usually 5% fast to 10% slow (this is in general, I don't know what Nissan's specs are). | + | There are two basic reasons for speedos reading fast or slow: |
| + | # Factory speedometer tolerance is usually 5% fast to 10% slow (this is in general, I don't know what Nissan's specs are) | ||
| + | #: [http://datsun1200.com/modules/newbb/viewtopic.php?topic_id=13971&forum=1 1200 Top Speed] discusses this. One magazine test noted the 1200 speedometer in the test car was 7% slow. My 1200s have been between 7.5% - 10% slow (with stock running gear include tire size). Also see [http://datsun1200.com/modules/myalbum/photo.php?lid=2028 speedo off] | ||
| + | # Different size tires than original, changed diff ratio or transmission | ||
| + | |||
| + | For the latter, there is a mechanical solution of changing to the appropriate speedo-drive gear at the back of the transmission: | ||
| + | |||
| + | |||
| + | |||
| + | For the former, where you have the "right" size tires, final gear ratio and stock transmission -- the speedometer itself may be calibrated. | ||
| - | [http://datsun1200.com/modules/newbb/viewtopic.php?topic_id=13971&forum=1 1200 Top Speed] discusses this. One magazine test noted the 1200 speedometer in the test car was 7% slow. My 1200s have been between 7.5% - 10% slow (with stock running gear include tire size). Also see [http://datsun1200.com/modules/myalbum/photo.php?lid=2028 speedo off] | ||
| Where can you go to get a speedo calibrated? Can it be done at home? | Where can you go to get a speedo calibrated? Can it be done at home? | ||
| + | * [http://mgaguru.com/mgtech/dash/st201.htm MGA Guru: Speedometer calibration] | ||
| = Photo Index = | = Photo Index = | ||
| [http://datsun1200.com/modules/myalbum/photo.php?lid=226 http://datsun1200.com/modules/myalbum/photos/thumbs/226.jpg] [http://datsun1200.com/modules/myalbum/photo.php?lid=923 http://datsun1200.com/modules/myalbum/photos/thumbs/923.jpg] [http://datsun1200.com/modules/myalbum/photo.php?lid=1085 http://datsun1200.com/modules/myalbum/photos/thumbs/1085.jpg] [http://datsun1200.com/modules/myalbum/photo.php?lid=1101 http://datsun1200.com/modules/myalbum/photos/thumbs/1101.jpg] [http://datsun1200.com/modules/myalbum/photo.php?lid=2192 http://datsun1200.com/modules/myalbum/photos/thumbs/2192.jpg] [http://datsun1200.com/modules/myalbum/photo.php?lid=2729 http://datsun1200.com/modules/myalbum/photos/thumbs/2729.jpg] [http://datsun1200.com/modules/myalbum/photo.php?lid=4352 http://datsun1200.com/modules/myalbum/photos/thumbs/4352.jpg] [http://datsun1200.com/modules/myalbum/photo.php?lid=5043 http://datsun1200.com/modules/myalbum/photos/thumbs/5043.jpg] [http://datsun1200.com/modules/myalbum/photo.php?lid=5362 http://datsun1200.com/modules/myalbum/photos/thumbs/5362.jpg] [http://datsun1200.com/modules/myalbum/photo.php?lid=8881 http://datsun1200.com/modules/myalbum/photos/thumbs/8881.jpg] [http://datsun1200.com/modules/myalbum/photo.php?lid=9301 http://datsun1200.com/modules/myalbum/photos/thumbs/9301.jpg] [http://datsun1200.com/modules/myalbum/photo.php?lid=10675 http://datsun1200.com/modules/myalbum/photos/thumbs/10675.jpg] [http://datsun1200.com/modules/myalbum/photo.php?lid=10754 http://datsun1200.com/modules/myalbum/photos/thumbs/10754.jpg] [http://datsun1200.com/modules/myalbum/photo.php?lid=10934 http://datsun1200.com/modules/myalbum/photos/thumbs/10934.jpg] [http://datsun1200.com/modules/myalbum/photo.php?lid=10935 http://datsun1200.com/modules/myalbum/photos/thumbs/10935.jpg] [http://datsun1200.com/modules/myalbum/photo.php?lid=11799 http://datsun1200.com/modules/myalbum/photos/thumbs/11799.jpg] [http://datsun1200.com/modules/myalbum/photo.php?lid=11981 http://datsun1200.com/modules/myalbum/photos/thumbs/11981.jpg] [http://datsun1200.com/modules/myalbum/photo.php?lid=12944 http://datsun1200.com/modules/myalbum/photos/thumbs/12944.jpg] [http://datsun1200.com/modules/myalbum/photo.php?lid=13092 http://datsun1200.com/modules/myalbum/photos/thumbs/13092.jpg] | [http://datsun1200.com/modules/myalbum/photo.php?lid=226 http://datsun1200.com/modules/myalbum/photos/thumbs/226.jpg] [http://datsun1200.com/modules/myalbum/photo.php?lid=923 http://datsun1200.com/modules/myalbum/photos/thumbs/923.jpg] [http://datsun1200.com/modules/myalbum/photo.php?lid=1085 http://datsun1200.com/modules/myalbum/photos/thumbs/1085.jpg] [http://datsun1200.com/modules/myalbum/photo.php?lid=1101 http://datsun1200.com/modules/myalbum/photos/thumbs/1101.jpg] [http://datsun1200.com/modules/myalbum/photo.php?lid=2192 http://datsun1200.com/modules/myalbum/photos/thumbs/2192.jpg] [http://datsun1200.com/modules/myalbum/photo.php?lid=2729 http://datsun1200.com/modules/myalbum/photos/thumbs/2729.jpg] [http://datsun1200.com/modules/myalbum/photo.php?lid=4352 http://datsun1200.com/modules/myalbum/photos/thumbs/4352.jpg] [http://datsun1200.com/modules/myalbum/photo.php?lid=5043 http://datsun1200.com/modules/myalbum/photos/thumbs/5043.jpg] [http://datsun1200.com/modules/myalbum/photo.php?lid=5362 http://datsun1200.com/modules/myalbum/photos/thumbs/5362.jpg] [http://datsun1200.com/modules/myalbum/photo.php?lid=8881 http://datsun1200.com/modules/myalbum/photos/thumbs/8881.jpg] [http://datsun1200.com/modules/myalbum/photo.php?lid=9301 http://datsun1200.com/modules/myalbum/photos/thumbs/9301.jpg] [http://datsun1200.com/modules/myalbum/photo.php?lid=10675 http://datsun1200.com/modules/myalbum/photos/thumbs/10675.jpg] [http://datsun1200.com/modules/myalbum/photo.php?lid=10754 http://datsun1200.com/modules/myalbum/photos/thumbs/10754.jpg] [http://datsun1200.com/modules/myalbum/photo.php?lid=10934 http://datsun1200.com/modules/myalbum/photos/thumbs/10934.jpg] [http://datsun1200.com/modules/myalbum/photo.php?lid=10935 http://datsun1200.com/modules/myalbum/photos/thumbs/10935.jpg] [http://datsun1200.com/modules/myalbum/photo.php?lid=11799 http://datsun1200.com/modules/myalbum/photos/thumbs/11799.jpg] [http://datsun1200.com/modules/myalbum/photo.php?lid=11981 http://datsun1200.com/modules/myalbum/photos/thumbs/11981.jpg] [http://datsun1200.com/modules/myalbum/photo.php?lid=12944 http://datsun1200.com/modules/myalbum/photos/thumbs/12944.jpg] [http://datsun1200.com/modules/myalbum/photo.php?lid=13092 http://datsun1200.com/modules/myalbum/photos/thumbs/13092.jpg] | ||
| [[Category:Body Electrical System]] | [[Category:Body Electrical System]] | ||
Revision as of 00:08, 26 July 2007
Speedometers were either in kilometers (JDM) or miles (USA). Australia started with mph and then switched to kph. Some speedometers had a trip meter.
Comparo
1972 USA Owners manual (see page 8,9 for Speedometer):
Instrument and Controls
Part Numbers
- ?? 100MPH w/o tripmeter (US standard equipment)
-
- ?? 100MPH with tripmeter
-
- 24850-H3400 1200 120MPH SPEEDOMETER Includes tripmeter
-
Speedometer Calibration
There are two basic reasons for speedos reading fast or slow:
- Factory speedometer tolerance is usually 5% fast to 10% slow (this is in general, I don't know what Nissan's specs are)
- 1200 Top Speed discusses this. One magazine test noted the 1200 speedometer in the test car was 7% slow. My 1200s have been between 7.5% - 10% slow (with stock running gear include tire size). Also see speedo off
- Different size tires than original, changed diff ratio or transmission
For the latter, there is a mechanical solution of changing to the appropriate speedo-drive gear at the back of the transmission:
For the former, where you have the "right" size tires, final gear ratio and stock transmission -- the speedometer itself may be calibrated.
Where can you go to get a speedo calibrated? Can it be done at home?
Photo Index
