RAHTR4 Posted January 11, 2023 Report Share Posted January 11, 2023 Hi Don, Yes they are zinc plated, however being N.O.S. Lucas they have been properly plated. I am sure other that other Lucas chromed screws can be found as this type was fitted to a number of Spot lamps with a band to strap the two parts together. Regards, Richard Quote Link to post Share on other sites
BlueTR3A-5EKT Posted January 12, 2023 Report Share Posted January 12, 2023 Hah! https://www.ebay.co.uk/itm/Lucas-7-Headlamp-Screw-Fitting-Rim-Classic-car-/144821687510?pageci=cd0639c1-fcc7-4fce-a644-e335df3a1e39&redirect=mobile Quote Link to post Share on other sites
Lebro Posted January 12, 2023 Report Share Posted January 12, 2023 But has it got the correct screw? Bob Quote Link to post Share on other sites
RAHTR4 Posted January 12, 2023 Report Share Posted January 12, 2023 Re the eBay item, it visually appears to be the correct screw, however the rim is not as it is for a smaller diameter lamp. The following are reproduction clamping screws for pre-WW2 Lucas headlamps and side lights. The headlamp screws have a larger head and will be a tight fit, obviously the caveat is, has the original thread pattern been used..? https://www.ebay.co.uk/itm/164226184603?hash=item263ca4b59b:g:6y8AAOSwlstf~fYp&amdata=enc%3AAQAHAAAAkM0HyWuQP8YDeVQF8ZMKkCYTBZDyEQqoCJQxCfgqyarWoO2%2F66gykKJBP%2F%2B3y5bKdpF5cvGL1QgR%2F%2FGFx9smQz93mPg%2FoC2XkepVW8T%2Bh4exBjh20EF4s3DYjwRfvarHcSyOeW%2B%2BZv1pxfzKREa7OLoBX8FI9inzmB4MhOASMW%2FgG9sk7hgtv7JGVnxIHySO0g%3D%3D|tkp%3ABk9SR_r65de0YQ The side light screws should fit without any problems, but again has the original thread pattern been used..? https://www.ebay.co.uk/itm/274989256784 Regards, Richard Quote Link to post Share on other sites
BlueTR3A-5EKT Posted January 12, 2023 Report Share Posted January 12, 2023 (edited) 1 hour ago, Lebro said: But has it got the correct screw? Bob Picky Picky! Probably not. their marketing waffle will assure you... Your driving enjoyment will be enhanced by the use of a 'state of the art' thread system (aka Metric) Edited January 12, 2023 by BlueTR3A-5EKT Quote Link to post Share on other sites
mike ellis Posted January 12, 2023 Report Share Posted January 12, 2023 3 hours ago, BlueTR3A-5EKT said: Hah! https://www.ebay.co.uk/itm/Lucas-7-Headlamp-Screw-Fitting-Rim-Classic-car-/144821687510?pageci=cd0639c1-fcc7-4fce-a644-e335df3a1e39&redirect=mobile As Richard says this one is too small. The seller did have an approx. 8in rim which is probably correct for TR3A but it sold today! Mike Quote Link to post Share on other sites
Don H. Posted January 12, 2023 Author Report Share Posted January 12, 2023 I've been watching this one on eBay, too. Right screw, but a lot of money for that being the only part I need.https://www.ebay.com/itm/354483539215 One of our most excellent correspondents on here may have found an original screw. Stay tuned for details after my UK visit during th Goodwood Members Meeting. Quote Link to post Share on other sites
Lebro Posted January 13, 2023 Report Share Posted January 13, 2023 See email Don, am investigating converting an M5 screw as we speak type. Bob When are you coming over ? Quote Link to post Share on other sites
Phil Read Posted January 13, 2023 Report Share Posted January 13, 2023 My 3A has the clamp on headlamp rims, this may be a daft question but how do you get a srew driver in to undo them? Quote Link to post Share on other sites
mike ellis Posted January 13, 2023 Report Share Posted January 13, 2023 Phil, With great care and perhaps use a right angled drive. When you refit them make sure the clamp is moved round from the lowest position to make it easier next time. Mike Quote Link to post Share on other sites
Lebro Posted January 13, 2023 Report Share Posted January 13, 2023 (edited) Had a few spare minutes this morning so made one up using a larger SS screw as a starting point: Threaded 2BA Bob Edited January 13, 2023 by Lebro Quote Link to post Share on other sites
Ian Vincent Posted January 13, 2023 Report Share Posted January 13, 2023 Very clever. Quote Link to post Share on other sites
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