Woodsey

Hi all,

Justy resetting the password.

I like to keep up on the discussions on this board.

I own a 1937 Ariel which is just about complete.

Keep up the great posts.

Ray

Hi,

My name is Ray Tolman. I am a non-military member. I apologize for not introducing myself earlier.

My hobby is working on old, British motorcycles. I am currently restoring an old 1937 Ariel 500.

I'm just about finished it but am looking for any information on pre-war Lucas tail/stop lamps.

Cheers.

Woodsey

Thank you.

I have found Pre war Ariel Sales Brochures that mention "Lucas Stop instead of Tail Light" as an "Extra" but it doesn't mention the ST20 by name, unfortunately.

I have not been able to find any other Lucas Motorcycle Stop Lamps manufactured in this era.

Cheers,

Woodsey

1937 was the year of the Road Traffic Act in the UK, at which point brake lights became compulsory on civilian machines so they would have stopped showing them as an extra.

Thank you Stef for this information.

I will now have to look for an actual photo of one installed on a motorcycle. You mention the 1934 BSA catalogue actually depicts a few bikes with the ST20 installed? I will need to look for a copy.

What rotary switch are you looking for? Is it a Lucas part?

Cheers,

Woodsey

Woodsey,

The Lucas ST 20 was introduced by Lucas for the 1932 season although I don't know when it was deleted from the catalogue - it certainly never reappeared post war. It was operated by a N° 20 switch, which was a pressed steel barrel shaped affair in two halves, held together by it's mounting strap. I have always associated these lights with BSA - the 1934 BSA catalogue certainly depicts a few bikes with the ST 20 fitted, albeit as an extra, which is how it was listed by most makers until 1937-38 when any mention of stop lamps seems to peter out. Of course, THE bike with the stop lamp as standard was the 500cc Rudge, but it used Miller equipment, which was probably even better at self-disassembly than even Lucas stuff was. I'm still looking for the infernal rotary switch for that to be able to finish off the installation on my '36 Ulster.

I saw one of those ST 20's up on Ebay a while ago, but it went for more than my bid which was a shame, since as you can tell I'm quite interested in prewar electrical bits. In any case a nice find, and seemingly complete, which must surely be a rarity these days.

All the Best,

Stef

I am trying to find out information about what I think is a pre war Lucas Motorcycle Stop Lamp.

I cannot find reference to it on the net or in any old Lucas Catalogues.

Is anyone familiar with this lamp or have photos of it as used on a motorcycle?

The lamp measures approx. 4 3/4" long by 2" deep. I have placed a Lucas MT110 by the ST20 for size reference.

Thank you for any assistance.

Woodsey