Page 3 of 3
Re: 12 Volt Conversion
Posted: Wed Jan 20, 2010 12:57 am
by YAMLAM
Out of curiosity, is this the 60s heatsink/zener diode you're referring to?
If it is , i got one sat in the shed as well .
Re: 12 Volt Conversion
Posted: Wed Jan 20, 2010 1:19 am
by Doom Patrol
Well, here is a thread back from the dead. No, mine is a Triumph type with lots of raked fins. The one you are referring to is said to be one done for AF Rayspeed I believe. I only know that because there was one on e.Bay a while ago.

Re: 12 Volt Conversion
Posted: Wed Jan 20, 2010 1:45 am
by Neilly67
As I understand it - and without splitting hairs - it was Arthur Francis in the 60's.... and fitted to the frame as pictured below.

Re: 12 Volt Conversion
Posted: Wed Jan 20, 2010 1:52 pm
by dapper
Bump
Re: 12 Volt Conversion
Posted: Wed Jan 20, 2010 4:21 pm
by J1MS
I never was able to find out where the power claim of 9amps for this 60's AF style 12 volt conversion came from (and I have done many of these conversions myself over the last 30+ years)
The only explaination I could think of is the power rating of the Zenor which I think is/was rated at 110 watts.???
Re: 12 Volt Conversion
Posted: Sun Jan 24, 2010 11:23 am
by wesbro
Could you tell me where I can download the article that the pages came from as I would like to do a 60s style 12volt conversion and the pics are just what Im lookiking for.