Hallo, on my bsa M20 (KM 20) 1939 is there a headlight mounted with the name Joseph Lucas DU 142 F. the rim is fixed with a screw. Does anyone know what the F means? TNX

Hi Michel

Here are some sections from a November 1943 Chilwell spares list (Rob Van Meel reprint, Thanks Rob) which shows several Lucas motorcycle headlamps.

DU142F 8inch With switch panel

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D142F 8inch Without switch panel fitted to some early makes with the switch panel in the petrol tank, so the "U" means switch panel?

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DU42R 6.5inch with switch panel and flat rim clip, so does "R" mean flat clip and "F" screw clip??

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DU142/CVC 8inch as the rim has the same part number as the DU142F & D142F? but obsolete by 1943, see "Demand MT3/LU/DU42/MAG".

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And today at Shepton Autojumble I nealy bought an 8inch DU142 shell made from brass, it was £30 with a rim but there were a couple of splits on the edge so I resisted. So does a brass headlamp have a different code to a steel one????

Rob

email (option): robmiller11@yahoo.co.uk

ok thanks mate. very nice info.