Cooper S dynamo?

[Michael7]

Did the Mk1 Cooper S have a different dynamo compared to lesser Minis? I recall that the main dynamo body had a step whereas the standard Mini ones were the same diameter the full length.

I have a 60s Lucas catalog that would answer this, but it is packed away from a recent move.

Anyone have info on this topic? Thanks.

[JC T ONE]

Hi Michael7,

Try this link = http://forum.minicooper.org/showthread.php?t=15277 (genuine BMC press photos, of 1071 S engines)


Jens Christian

edit 23.38

just had a look at a 1966 genuine one owner MK I S,s and a 1967,
both have the same shape on the dynamo housing, as in the link above.

PS both cars, are unrestored.

[Michael7]

Thanks for the reply Jens. In the upper photo, it looks like the dynamo is the type with a step down to the left of the ignition coil support. The lower photo is inconclusive in this regard.

I presume when you say the 2 cars with original dynamos that you looked at are consistent with the photo, you must be referring to the upper photo of the 1071 engine bays. Please confirm.

[JC T ONE]

Thanks for the reply Jens. In the upper photo, it looks like the dynamo is the type with a step down to the left of the ignition coil support. The lower photo is inconclusive in this regard.

I presume when you say the 2 cars with original dynamos that you looked at are consistent with the photo, you must be referring to the upper photo of the 1071 engine bays. Please confirm.

I agree, upper has a step, but the pics I have, does not show this detail, as the coil bracket is positioned,
so it covers the step (if its there?)
you need other owners, of unmolested cars, to step foreward.

[ricardo]

I don't think there is such a rule about what type of dynamo fitted. I've seen them both (stepped & non stepped) on original cars. I've seen the 2 different types with the same month and year on it! What I think was different on a Cooper S, was the dynamo pulley - 3 5/8" iirc.