headlamp bulbs

[quk@isham-research.demon.co.uk (Phil Payne)]

In message <35E705E5.C8215343@nh.ultranet.com> Huw Powell writes:

>> I guess I trust strangers too much...isopropyl alcohol, right?

> unless you want your car subjected to roadside testing - whoops, wrong
> thread?

OK, OK - knock it off.

However - with all the received wisdom about not leaving human sweat
and grease on quartz envelopes - has anyone definitive proof of the
results?

I ask because around a year ago an ur-quattro owner at the Area E
meeting complained that his H1s didn't work.  Roger Galvin shot off to
look at the fuses and switches - I just checked the bulbs.  Both were
blown, and looked rather like the old PF1 flashbulbs after they'd gone
off.  The envelopes were all twisted and fly-blown.

When my bulbs go (170w - all too often) they just seem to snap a
filament and sit there.  I've never seen envelope damage.

--
 Phil Payne
 Phone: 0385 302803   Fax: 01536 723021
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