HID Lighting Questions

On Jun 28, 12:02*pm, "
wrote:
On Jun 27, 7:40*pm, Steve - KDMW wrote: Some questions on HID lighting. I have a 1974 PA28-151 and would like
to replace my landing light (cowl mounted) with an HID light. I know
about the boom beams, but I also see that Precise Flight makes HID
lighting also, and it's about half the price of LoPresti's.

The HIDs are quite a bit deeper. *And you need a place to mount the
power supply.

Around here, a local shop is installing them with a field approval. *A
sample
337 that has been approved would help you.

I seem to be a corner case.... I installed one in my Bonanza and I've
had
trouble with the vibration killing the *bulb. *No one can figure it
out.

FWIW. *Bill Hale Loveland CO



I looked at Precise Flight's installation manual and noticed that it
was written by Knots2U. In addition, it states that the lighting is
for wing mounting only and for Piper models PA24/30/39 aircraft.

My question is... a PAR36 bulb is a bulb is a bulb, isn't it? Aside
from perhaps the legality of the FAA approving this STC for one
specific location, wouldn't this bulb and installation kit work just
as well for a cowl-mounted light? The specifications for this bulb are
exactly the same specs as for all of the other HID bulbs, i.e. 500,000
CP, 35 watts, 12 volts, 2.5 Amps, PAR36, etc.

Steve
KDMW- Hide quoted text -

- Show quoted text -

A field approval sounds like a good option. I don't think space is an
issue for me, I have a good 8-10 inches clearance behind the bulb.
Mounting the power supply to my firewall should be easy... that's how
the boom beam would be done if I bought that (for $1100 versus the
Precise Flight at $550).

Steve
KDMW

Steve - KDMW writes:


A field approval sounds like a good option. I don't think space is an
issue for me, I have a good 8-10 inches clearance behind the bulb.
Mounting the power supply to my firewall should be easy... that's how
the boom beam would be done if I bought that (for $1100 versus the
Precise Flight at $550).

Two issues come to mind besides clearance: vibration and temperature.
Not sure if either is an issue, but...

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