> Rated current: Bulb #52 is 100mA, Bulb#46 is 200mA- does
> this necessarily mean twice the heat? Is that a MAJOR
> PROBLEM???????????????????
Yup, twice the heat. I cannot swear that is a serious problem, but I have
seen several cases where the plastic "windows" in the gauges, and the
plastic lenses for the turn & ignition indicators were melted and discolored
from excess heat.
> Both bulbs are 14v
> Output (Candle Power rating?) Bulb #52 is 0.75 MSCP, Bulb #46
> is 1.4 MSCP MOST SHOCKING info: Average Life (hours) for
> both bulb types is only 30 hours?????????????????
>
> Hopefully, someone can shed some light (NPI) on this issue.
Aha ! That may explain why the #52 bulbs are brighter (if they really are),
even though they consume less power than the original Lucas 987 bulbs.
Lifetime is one of those bulb design parameters that can be traded off
against other parameters, including brightness. IOW, for the same power, a
bulb can be made brighter at the expense of shorter lifetime.
I don't know what the rated lifetime for the Lucas 987 is, but given how
many working bulbs I've seen that appear to be original, I would guess it's
at least 1000 hours. Probably varies a lot too, as a result of that famous
Lucas quality control.
Randall
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