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Topic Options
#157244 - 11/25/13 06:02 PM Re: New landing/taxi lights burnt out after a few uses [Re: vettdvr]
Henry M. Offline
Gold Pilot

Registered: 08/23/11
Posts: 1985
Loc: Leander, TX
Hmm, the Trilliant light only specifies 900 lumens.

Candlepower is not as useful a measurement, since it specifies light in one direction, whereas lumens is light over a large surface area, kind of like CP/sq. meter or something like that.

What wattage 4509 is the 110,000 CP for? There seem to be several variants floating around. In a home application, 800 lumens is about what a 60W bulb produces.


Edited by Henry M. (11/25/13 06:06 PM)
_________________________
Henry
1965 C182H

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#157250 - 11/25/13 06:29 PM Re: New landing/taxi lights burnt out after a few uses [Re: Henry M.]
vettdvr Offline
Club Sponsor
Diamond Pilot

Registered: 06/24/10
Posts: 7724
Loc: Slidell La
Originally Posted By: Henry M.
Hmm, the Trilliant light only specifies 900 lumens.

Candlepower is not as useful a measurement, since it specifies light in one direction, whereas lumens is light over a large surface area, kind of like CP/sq. meter or something like that.

What wattage 4509 is the 110,000 CP for? There seem to be several variants floating around. In a home application, 800 lumens is about what a 60W bulb produces.


And all that may be true but GE rates it in CP> Guess someone should call GE and explain it to them.
_________________________
Vettdvr

Single/Multi/instrument/type/commercial But then I am still learning.

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#160220 - 12/10/13 03:16 PM Re: New landing/taxi lights burnt out after a few uses [Re: vettdvr]
Kelly Brown Offline
New Member

Registered: 10/07/13
Posts: 9
Loc: Oregon
Damon,

As many others have already mentioned, LED's are the way to go! I was having your same problem and use my 172 for instruction. My lights are on all the time for collision avoidance. After almost 2 years, the LED's are still shining bright as the day I put them in!

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#164404 - 12/30/13 10:02 PM Re: New landing/taxi lights burnt out after a few uses [Re: Henry M.]
ytodd Offline
Platinum Pilot

Registered: 03/29/11
Posts: 2582
Loc: Illinois
Originally Posted By: Henry M.
Let me know how your "test" goes. I'm kind of tempted to do the same. Anybody know how many lumens the standard GE4509 bulbs in our planes put out?


Standby for some test results later this weekend. smile

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#164430 - 12/31/13 05:10 AM Re: New landing/taxi lights burnt out after a few uses [Re: vettdvr]
Rusty Rudder Offline
Diamond Pilot

Registered: 02/26/10
Posts: 8353
Loc: Fair Haven New York
Originally Posted By: vettdvr
Originally Posted By: Henry M.
Hmm, the Trilliant light only specifies 900 lumens.

Candlepower is not as useful a measurement, since it specifies light in one direction, whereas lumens is light over a large surface area, kind of like CP/sq. meter or something like that.

What wattage 4509 is the 110,000 CP for? There seem to be several variants floating around. In a home application, 800 lumens is about what a 60W bulb produces.


And all that may be true but GE rates it in CP> Guess someone should call GE and explain it to them.

Think they don't already know ?
_________________________
Take-off's are optional, landings are manditory


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#166546 - 01/11/14 01:38 PM Re: New landing/taxi lights burnt out after a few uses [Re: ytodd]
Henry M. Offline
Gold Pilot

Registered: 08/23/11
Posts: 1985
Loc: Leander, TX
ytodd,

Did you ever test the Trilliant bulbs?
_________________________
Henry
1965 C182H

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#166577 - 01/11/14 06:38 PM Re: New landing/taxi lights burnt out after a few uses [Re: Henry M.]
ytodd Offline
Platinum Pilot

Registered: 03/29/11
Posts: 2582
Loc: Illinois
I only bought one, but it showed up in the middle of the polar vortex and I have not been out to the airport to install it. I will try to get out there tomorrow.

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#166580 - 01/11/14 07:17 PM Re: New landing/taxi lights burnt out after a few uses [Re: ytodd]
cadcap Offline
Gold Pilot

Registered: 11/17/11
Posts: 1835
Loc: NW Indiana
Curious to know how much power you save too..my charging system (H model only has 50 amps) seems strained at night w/all the original incandescent lights on. I'm slowly converting the cheaper/smaller lights to L E D.

"Polar Vortex" for sure...we share similar weather 'cept Peoria doesn't have "lake effect" woes.

If you ever get up around my neighborhood let me know...or how 'bout meeting in Rochelle or ? for breakfast some weekend? Any airport restaurants between us?


Edited by cadcap (01/11/14 07:19 PM)
_________________________
1967 172H "Bronze Lindy" OshKosh '13


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#166613 - 01/11/14 10:13 PM Re: New landing/taxi lights burnt out after a few uses [Re: cadcap]
Henry M. Offline
Gold Pilot

Registered: 08/23/11
Posts: 1985
Loc: Leander, TX
I got one of the flood/wide angle beams, to replace my taxi light, but haven't had a chance to try it out yet. I just received it today. I found it for $100 with free shipping on eBay. There's another one there for the same price. There are also a couple of the sealed/narrow beam versions for just under $103. I may get one of those too after I try out the one I got. I'm not sure when I'll have time to spend an evening at the airport playing with it.
_________________________
Henry
1965 C182H

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#166634 - 01/12/14 12:36 AM Re: New landing/taxi lights burnt out after a few uses [Re: Henry M.]
ytodd Offline
Platinum Pilot

Registered: 03/29/11
Posts: 2582
Loc: Illinois
I ordered the FORWARD LIGHTING, TRILLIANT, PAR 36 LED BULB, TRACTOR, 10-30 VOLT (63821-5) from Amazon for $102 with free shipping. It is a nice bulb, from what I can tell. It appears to be of high quality. I am anxious to install it and see how it performs.

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#166637 - 01/12/14 05:07 AM Re: New landing/taxi lights burnt out after a few uses [Re: ytodd]
Henry M. Offline
Gold Pilot

Registered: 08/23/11
Posts: 1985
Loc: Leander, TX
I have the Grote 63831-5 Trilliant PAR36 LED Whitellight Work Lamp Wide Flood that I plan to use as a taxi light. I found it for $100 even, including free shipping, on wBay.

I want to use the one you have as a landing light, but haven't ordered it yet.

I am mostly interested in the lower current draw, sine I still have a generator in my C172E. The existing lights draw quite a bit of current and I don't feel comfortable with them on for extended periods.


Edited by Henry M. (01/12/14 05:08 AM)
_________________________
Henry
1965 C182H

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#166641 - 01/12/14 07:12 AM Re: New landing/taxi lights burnt out after a few uses [Re: Henry M.]
XP Driver Offline
Club Sponsor
Gold Pilot

Registered: 01/08/11
Posts: 2407
Loc: Fairfax, Virginia
I have no experience with the Trilliant bulbs but my Alpha Beam LED lights is wonderful. Low draw and it is multiple times brighter than the light it replaced. Once my taxi light burns out I am going to but in a second Alpha Beam.
_________________________


Once you go XP you never go back!

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#166645 - 01/12/14 07:52 AM Re: New landing/taxi lights burnt out after a few uses [Re: XP Driver]
vettdvr Offline
Club Sponsor
Diamond Pilot

Registered: 06/24/10
Posts: 7724
Loc: Slidell La
Doesn't look like they have a 5" landing LED. 4522 is my standard bulb size but on AB site they didn't list it only the smaller bulb sizes.
_________________________
Vettdvr

Single/Multi/instrument/type/commercial But then I am still learning.

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#166647 - 01/12/14 08:12 AM Re: New landing/taxi lights burnt out after a few uses [Re: ytodd]
Rusty Rudder Offline
Diamond Pilot

Registered: 02/26/10
Posts: 8353
Loc: Fair Haven New York
Originally Posted By: ytodd
I ordered the FORWARD LIGHTING, TRILLIANT, PAR 36 LED BULB, TRACTOR, 10-30 VOLT (63821-5) from Amazon for $102 with free shipping. It is a nice bulb, from what I can tell. It appears to be of high quality. I am anxious to install it and see how it performs.


Interesting, keep us posted !
_________________________
Take-off's are optional, landings are manditory


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#166664 - 01/12/14 11:12 AM Re: New landing/taxi lights burnt out after a few uses [Re: Rusty Rudder]
vettdvr Offline
Club Sponsor
Diamond Pilot

Registered: 06/24/10
Posts: 7724
Loc: Slidell La
Make sure the amp draw on the new bulb doesn't exceed the old bulb. There have been issues with the landing light switch overheating due to too much current draw.
_________________________
Vettdvr

Single/Multi/instrument/type/commercial But then I am still learning.

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#166677 - 01/12/14 12:38 PM Re: New landing/taxi lights burnt out after a few uses [Re: vettdvr]
Rusty Rudder Offline
Diamond Pilot

Registered: 02/26/10
Posts: 8353
Loc: Fair Haven New York
I've burned out one landing light switch now the landing light bulb. Wondering if the switch starts to get bad, not complete contact inside the switch, or an arc'ing upon start-up inside the switch, if this creates a larger current draw in that the switch does not have good continuity. As a result, the bulb is supplied with reduced voltage, the current increases and the bulb blows as a result of higher current ? No ?


(Yeah, yeah yeah, the bulbs are identical and spec'd for my aircraft)
_________________________
Take-off's are optional, landings are manditory


Top
#166682 - 01/12/14 01:19 PM Re: New landing/taxi lights burnt out after a few uses [Re: vettdvr]
Henry M. Offline
Gold Pilot

Registered: 08/23/11
Posts: 1985
Loc: Leander, TX
Vettdvr,

The LED bulbs should draw MUCH less current that the original incandescent bulbs. That is one of the reasons I want to try replacing my bulbs.

In the case of a switch, a higher power bulb would likely draw more current, since power is voltage multiplied by current, and the voltage is not changing. The power dissipation P is related to current (I) and resistance (R) by the equation.

P = I x R x R

So power dissipated is proportional to the square of the resistance. If you go from a 60W bulb to a 100W bulb, current will go up by 66%, and so will the power dissipation in the switch. If the switch is additionally increasing its resistance due to age, it will heat up even more.
_________________________
Henry
1965 C182H

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#166689 - 01/12/14 02:45 PM Re: New landing/taxi lights burnt out after a few uses [Re: Henry M.]
vettdvr Offline
Club Sponsor
Diamond Pilot

Registered: 06/24/10
Posts: 7724
Loc: Slidell La
Henry you are right,, But check twice cut once, It never hurts to check amp ratings. I realize the LED's were lower current draw but didn't realize that AMAZON sold a PMA LED for aircraft. I thought it was conventional bulb.
_________________________
Vettdvr

Single/Multi/instrument/type/commercial But then I am still learning.

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#166691 - 01/12/14 03:07 PM Re: New landing/taxi lights burnt out after a few uses [Re: vettdvr]
Henry M. Offline
Gold Pilot

Registered: 08/23/11
Posts: 1985
Loc: Leander, TX
It is a PAR 36 bulb that is a replacement for the also non-PMA-specific GE 4509 PAR36 bulb that is in the plane ... You replace a light bulb with an equivalent PAR 36 bulb as owner maintenance. No need to get into the details of whether one is incandescent or LED. There is no PMA statement in the box when you buy a 4509 bulb. It is just a bulb that was originally used in tractor applications and Cessna and other plane makers picked up for use I the plane.

Here's an information sheet for the bulb. It draws 1.4A from a 12V supply.

I'm not sure if it would be best to use two of the same narrow beam lights for taxi and landing lights, or one wide beam for taxi and one narrow beam for landing. In any case, having both on will use a lot less current than just one of the incandescent bulbs that at 100W would draw more than 8A each from a 12V supply. Even the narrow beam unit has a better beam pattern that the incandescent bulbs.


Edited by Henry M. (01/12/14 03:14 PM)
_________________________
Henry
1965 C182H

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#166756 - 01/12/14 07:45 PM Re: New landing/taxi lights burnt out after a few uses [Re: Henry M.]
ytodd Offline
Platinum Pilot

Registered: 03/29/11
Posts: 2582
Loc: Illinois
Yeah, my day got away from me. School projects with both kids, indoor soccer, dinner with inlaws. I can make a ton of excuse, but the end result if the new LED bulb is still sitting here at the house. I will make more effort to get out and install it and do some comparison photos tomorrow.

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#168397 - 01/21/14 06:31 PM Re: New landing/taxi lights burnt out after a few uses [Re: ytodd]
combahee Offline
Pilot in Command

Registered: 07/29/12
Posts: 428
Loc: Lowcountry, SC
Ever install it?
_________________________
1959 172 straight tail

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#169021 - 01/24/14 10:27 PM Re: New landing/taxi lights burnt out after a few uses [Re: combahee]
ytodd Offline
Platinum Pilot

Registered: 03/29/11
Posts: 2582
Loc: Illinois
Originally Posted By: combahee
Ever install it?


nah, got super cold here and crappy weather so I haven't been to the hangar, then I got the flu this week so.....

maybe this weekend.

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#169027 - 01/24/14 11:42 PM Re: New landing/taxi lights burnt out after a few uses [Re: ytodd]
cadcap Offline
Gold Pilot

Registered: 11/17/11
Posts: 1835
Loc: NW Indiana
Hope you feel better soon Todd...our weather sure does wear on me too lately.

Havent been flyin for weeks...stinks.

Get Well.
_________________________
1967 172H "Bronze Lindy" OshKosh '13


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