"John Smith I" wrote in message
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Thomas & Karen Mitchell wrote:

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So: I'll stay at 25 when in the car.

-- KG7U
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Tom Mitchell, Port Angeles, Washington, USA
http://www.olympus.net/personal/kg7u
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Every engineer, worth his pay, which I know, allow at least a 20% excess
on ratings.

50 X 20% = 10 watts

50 + 10 = 60 watts

I'd run the 65 and examine the glass mount now and then. You'll see if
damage begins and switch lower power.

Warm regards,
JS

That sounds like a girl waiting until she is just a litte bit pregnant to
stat us birth control.
Either the glass cracks, it starts to delaminate, or you fry your finals,
all could be too far by the time you see it.