Where can I find a speedo for a UK Elan S4 ?
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Post by: Barrenton » Mon Oct 14, 2013 9:23 am
I need to locate a Smiths speedo to suit my 1969 UK spec Elan SE, with the 130 mph face and mileometer.
Can anyone please tell me whether this unit was sourced from another car range - Ford perhaps ? And if so, which models/manufacturing years ? I can then try to track one down.
Alternatively, should you know of one for sale, please let me know.
Many thanks
Can anyone please tell me whether this unit was sourced from another car range - Ford perhaps ? And if so, which models/manufacturing years ? I can then try to track one down.
Alternatively, should you know of one for sale, please let me know.
Many thanks
- Barrenton
- New-tral
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Post by: msd1107 » Mon Oct 14, 2013 6:54 pm
I believe that S1-S3 Elans had the 140 MPH speedometer, with 1000 turns per mile internal gearing. I can not read the Smiths model number on mine.
The S4 and later Elans had the 130 MPH speedometer with 980 turns per mile internal gearing to suit the upgrade to 155-13 tyres from 145-13. It is Smiths 6207/08 980.
The early speedometers had tick marks at 2 MPH intervals, the 130 MPH speedometers had tick marks every 10 MPH. The last numerical legend was 130, but there was a last tick mark corresponding to 140.
The later speedometers come up on eBay reasonably frequently, the early ones are not nearly as common, quite rare in fact.
Upon further thought, the +2s had a 130 MPH speedometer, but with a 960 turns per mile internal gearing to suit 165-13 tyres. This will produce a fast odometer reading unless you upgrade to 16-13 tyres, a desirable upgrade anyway.
There is a downloadable spreadsheet at lotus-suspension-f42/updated-spreadsheets-t18445.html that many users use to answer questions about tyre size, speedometer gearing, and transmission/speedometer gears.
David
1968 36/7988
The S4 and later Elans had the 130 MPH speedometer with 980 turns per mile internal gearing to suit the upgrade to 155-13 tyres from 145-13. It is Smiths 6207/08 980.
The early speedometers had tick marks at 2 MPH intervals, the 130 MPH speedometers had tick marks every 10 MPH. The last numerical legend was 130, but there was a last tick mark corresponding to 140.
The later speedometers come up on eBay reasonably frequently, the early ones are not nearly as common, quite rare in fact.
Upon further thought, the +2s had a 130 MPH speedometer, but with a 960 turns per mile internal gearing to suit 165-13 tyres. This will produce a fast odometer reading unless you upgrade to 16-13 tyres, a desirable upgrade anyway.
There is a downloadable spreadsheet at lotus-suspension-f42/updated-spreadsheets-t18445.html that many users use to answer questions about tyre size, speedometer gearing, and transmission/speedometer gears.
David
1968 36/7988
Last edited by msd1107 on Mon Oct 14, 2013 7:45 pm, edited 1 time in total.
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msd1107 - Fourth Gear
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Post by: twincamman » Mon Oct 14, 2013 8:48 pm
at 140 you wont have time to read it any way
dont close your eyes --you will miss the crash
Editor: On June 12, 2020, Edward Law, AKA TwinCamMan, passed away; his obituary can be read at https://www.friscolanti.com/obituary/edward-law. He will be missed.
Editor: On June 12, 2020, Edward Law, AKA TwinCamMan, passed away; his obituary can be read at https://www.friscolanti.com/obituary/edward-law. He will be missed.
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twincamman - Coveted Fifth Gear
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Post by: TroonSprint » Mon Oct 14, 2013 9:51 pm
If money is no object, Speedy Cables will make one for you. I would think it would be in the ?100 - ?200 range. They do bespoke instruments. [url]http://www.speedycables.com/index.html
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Mike
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Mike
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TroonSprint - Fourth Gear
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