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CB750K1 Headlamp unit

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deedub:
Hello all, I have a period Cibie sealed beam headlamp unit fitted to my K1. Am i right in thinking that these when fitted as an upgrade just involved putting the unit into the stock inner and outer rims?
Ultimately i want to go back to original so i,m hoping to just having to buy a UK glass and reflector and slot it straight in.
Can anyone here confirm this please?
Regards Dave

hairygit:
To be honest, if you intend to actually ride it rather than put it in a museum, I'd leave the Cibie on it, far better than stock, and a totally acceptable period modification.

mike the bike:
Would that Cibie unit fit a 400four, because my headlamp is piss poor.  It's like riding with a candle in a jam jar.

Chris400F:
Methinks not, the 400 headlamp is only 6" whereas I think the 750 is 7".
The Cibie unit you could get for the 400 was slightly smaller than the standard unit and came with an adaptor ring which fitted between the headlamp rim and the light unit as well as different fitting clips. The adaptor ring may have been different according to what bike you were fitting the lamp to, I don't know. I have one on my 400. They come up on eBay occasionally, which is where I picked up mine. Certainly a period modification and a great improvement on stock although I don't think it is a Z beam.

K2-K6:
I think the original cibie conversion for the 400 was a "bi Oscar" in terms of what cibie called them
them.
Oscar refers to that size of light shell with the bi being a two filament bulb. You should be able to get a new one from some of the car rally supply guys.

As Chris says the 400 headlight shell needs an adapter ring to make them fit.

The same sized light units 160mm are used in things like triumph stag, dolomite sprint and BMW 3 series as well, these all using H4 bulbs but the bosch units fitted to BMW maybe too deep to fit your shell.

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