Classic cars forum & vehicle restoration.
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1935Hillman
Joined: 06 Apr 2010 Posts: 257 Location: Hampshire
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Posted: Tue Jul 27, 2010 12:36 pm Post subject: lucas wiper motor screws |
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Hi all,
Does anyone know what thread the small raised countersunk machine screws are that hold a lucas wiper motor to the windscreen of a 30's sports car?
Thanks |
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peter scott
Joined: 18 Dec 2007 Posts: 7118 Location: Edinburgh
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Posted: Tue Jul 27, 2010 1:11 pm Post subject: |
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Hi Hillman,
I would suspect they will be BA or BSF. Can you count the threads per inch and measure the diameter?
Peter _________________ http://www.nostalgiatech.co.uk
1939 SS Jaguar 2 1/2 litre saloon |
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MVPeters
Joined: 28 Aug 2008 Posts: 822 Location: Northern MA, USA
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Posted: Tue Jul 27, 2010 4:24 pm Post subject: |
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I think I've been down this road!
I hope I'm right, but I believe BA is the correct thread for most small Lucas things. Your local model railway shop will have them in stock.
Mike
MVPeters@comcast.net |
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Glenn Crawford
Joined: 06 Dec 2007 Posts: 69 Location: Dorset, SW England
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Posted: Sat Jul 31, 2010 12:40 am Post subject: |
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I agree, they will almost certainly be of the BA family, but if the screws were supplied by Lucas (rather than being furnished by Hillman to go with their screen) there is a chance they may be one of the rare odd-numbered sizes. As 99% of BA screw applications used even-numbered sizes (0BA, 2BA, 4BA etc), be prepared for some puzzled faces and scratched heads if it's a 3BA for example.
But a reasonable guess is that they will turn out to be 2BA, a popular and sensible size and not hard to find from many fastener suppliers - or indeed your model railway shop, good idea Mr Peters. |
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Nic Jarman
Joined: 05 Oct 2008 Posts: 1031 Location: Stoke by Clare, Suffolk
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Glenn Crawford
Joined: 06 Dec 2007 Posts: 69 Location: Dorset, SW England
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Posted: Sat Jul 31, 2010 4:54 pm Post subject: |
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Wow. Someone selling 3BA screws in boxes of 100! Now that's what I call a specalist! Also try http://stainlessautomotivefastenings.co.uk, they sell screws with unusual threads (e.g. BSF, BA) in stainless steel. But order by phone to find out whether they have stock, or you may end up waiting weeks. |
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1935Hillman
Joined: 06 Apr 2010 Posts: 257 Location: Hampshire
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Posted: Sun Aug 22, 2010 12:25 pm Post subject: |
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Thank you for all of your replies, all makes sense and very helpful |
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