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+--- Thread: speedo (/showthread.php?tid=4973)
speedo - Steve Clare - 20-09-2020
Hello all
I'm not going to bother with a speedo on my special. Do I need to blank off the drive at the gearbox (will oil issue from it? -I'm assuming it will).
If I do need a brass cap on it, does anyone have any idea of the thread size please?
Many thanks.
I will be ready to have a crack at starting it pretty soon, so will be pestering you to pop over and give me a hand Gene!
RE: speedo - Howard Wright - 20-09-2020
Hi Steve
The thread is 3/4” 26 TPI.
If you have an old speedo cable just take the thumb nut off and put a blanking washer under it!
I think you may have trouble with the law if stopped without a speedo. I’m not sure if gps versions are permitted? Perhaps others can comment.
Cheers
Howard
RE: speedo - Mike Costigan - 20-09-2020
Depends on the age of the car; I believe a speedo is not a legal requirement for cars registered before 1st January 1936.
RE: speedo - "Slack Alice" Simon - 20-09-2020
I don't think oil gets out unless you have a very full gearbox, in which case the speedo drive will be the smallest problem.
RE: speedo - Mike Costigan - 20-09-2020
Just checked, the critical date is in fact 1st October 1937, see paragraph 35(2g) - note the requirement is first use, not construction:
https://www.legislation.gov.uk/uksi/1986/1078/regulation/35/made#:~:text=%E2%80%94(1)%20Save%20as%20provided,operation%20of%20a%20switch%2C%20separately.
RE: speedo - Zetomagneto - 20-09-2020
Hi Steve, no speedo needed, but lack of one does not exempt you from speeding fines!
Your special looks fast and will attract attention, hopefully none bad.
See you soon, Gene