Hi Rik, the only reference that I can find at the moment to the part number 33020, is in a motorcycle accessories catalogue dated 1949 of A J SANDERS, CORPORATION STREET BIRMINGHAM, is under regulators. 33018 MCR1 L31 flat fixing lead acid. Replaces 33020 and 390706.
33053 MCR1 L4 Clip fixing lead acid. Replaces 390704.
If you want an NOS Lycett drivers seat or an NOS Lycett Pillion seat, I have several.
In the States mate. You wouldn't happen to have a complete set of WD G3L engines cases would you?
Hi Rik, have found some further information, 33020 is the part number for the regulator in Ariel WNG parts books, also found a loose paper sheet in the back of the 1940 BSA blue cover parts book which is actually Norton which has regulator part number as 390706,there's some other loose sheets in the back but are all bsa M20 & WC10.
Thanks for all the info. My own 3HW is a late one that should have the push button headlamp and Vokes (3HW 680??), some 1500 past the 400000 motorcycle. It seems I've a fair bit to check out. The previous owner managed to trace back its history to the first owner, who bought it crated after the war. He painted it black and rode it around Europe. It was registered in Cheltenham, Gloucester.