2 MC capacitor alternatives

After having digested info both on paper and in various forums I came to the conclusion that having the capacitor in the circuit was generally a good thing. I tested mine and found that after appx 35 years of boinging around it was not as healthy as it should be, not surprising really so a new one was required.

After checking the spec the option I have fitted is one manufactured by BHC, 63 vdc, 4,700 uF and so far starting is improved with now no kick back. My battery was ok but getting on a bit so I presume not always giving the Boyer it's full 12v plus.

I work for RS components so bought it through work, stock no 381-9087 [http://uk.rs-online.com/web] cost was a very reasonable £6.45 + vat and it's British made. In the US Allied Electronics are part of the same group as RS so no doubt they could supply it as well, they offer screw or solder connections, I went for screw.

Clearly there are a lot of opinions as to the value of the little blue can but I know that starting and low speed running were worse and the cause was the capacitor failing, with a new one much improved.

Thanks for the info Spelky. Someone had told me it was equivalent to a 4MF cap. Big difference. In the diagram it looks to be a filter as well.

It definitely wouldn't be 4MF spelky, 4700 sounds familiar, I took mine off back in the late '70's when I fitted Boyer ignition and it's never had one since, never had any ill effects. (MF, uF, both the same thing-microfarads)
Dave.

Spent quiet a bit of time looking at all the variations available, selected that particular one (4,700 micro farrads) as it was the same spec as offered by Commando spares suppliers inc the voltage, dimensions and ripple current, the one they offered was manufactured by Aerovox but same part no, the factory was in turn sold to BHC who manufacture them now.

A bit of research on the web might show up where the original Lucas ones were made, maybe the same place?