Help me identify bulb for navigation light

[ProDave]

I need a new bulb for our navigtaion light. but it is slightly odd.

At first glance it looks like a pretty ordinary festoon lamp, about 44mm long (1 3/4") but the end caps are different.

A normal festoon lamp has conical shaped ends that fit into a hole in each of the terminals in the lamp holder. But this lamp has conical indents in each end cap and there is a point on each lamp terminal that sits into the indents on the lamp. A sort of "inverted terminal" festoon lamp.

I am sure it is a standard type of lamp, and as usual, it is a case of asking the knowlegable on her what is the correct name for this type of lamp?

Oh and I want the replacement to be LED

 

[penfold]

Google suggests the common name is just dimpled festoon bulb; quite a few options appear using that.

 

[ProDave]

Thank you.

So a quick search suggests Holt are the only supplier of a dimpled festoon lamp for just over £10. a plain ordinary conical shaped one can be had for about £3

The good old marine premium, lets deliberately make it different.

I can feel the lamp holder being modified now as a matter of principle.

 

[VicS]

Thank you.

So a quick search suggests Holt are the only supplier of a dimpled festoon lamp for just over £10. a plain ordinary conical shaped one can be had for about £3

The good old marine premium, lets deliberately make it different.

I can feel the lamp holder being modified now as a matter of principle.

You will find dimple ended led festoon bulbs on the Boat Lamps website

Festoon LED Lamps

( Note that they are closed for holidays until 8 Sept )

Use coloured or warm white behind coloured lenses and cool white for white lights.

 

[Martin_J]

I have never used (or suggested) leds as replacement in light fittings that would have been certified whilst they were used with a single vertical filament bulb that would give the correct cut off angles.

It seems like nobody is so concerned these days about light sources that are wider, thus giving a less than perfect cut off angle.

However... Bedazzled also supply dimple ended festoon LED bulbs, in cool white, warm white, red or green, but more importantly they are fused.

12 volt and 24 volt LED Festoon LED bulbs from Bedazzled

 

[Martin_J]

Maybe the Boat Lamps 'excess current protection' is the equivalent of Bedazzled 'fused'.

 

[Martin_J]

And as VicS mentions, LED colour choice is important, but the colour spectrum of the LED is never quite matched to the lens.

Going by...



Would seem to imply that the tricolour suggestion is not optimal for all the sectors..

 

[Stemar]

Alternatively, replace the lights with something like this

Talamex Led Navigation Lights

and do away with crazed lens and the frequently dodgy connection between the lamp and the bulb altogether.

 

[ProDave]

Alternatively, replace the lights with something like this

Talamex Led Navigation Lights

and do away with crazed lens and the frequently dodgy connection between the lamp and the bulb altogether.

I have to say that looks an altogether better solution.

 

[penfold]

Alternatively, replace the lights with something like this

Talamex Led Navigation Lights

and do away with crazed lens and the frequently dodgy connection between the lamp and the bulb altogether.

There seems to be a product description problem, their masthead lamp is missing 180 degrees of illumination.

 

[Martin_J]

I have to say that looks an altogether better solution.

Indeed... any full replacement should be better in that as well as clear lens, you'll expect to have the correct colour and cut off angles.

 

[B27]

There seems to be a product description problem, their masthead lamp is missing 180 degrees of illumination.

I think it's 'masthead' not all-round white.
'masthead' + 'stern' = 360 degrees?

AKA 'steaminig'.

Looking at the way you can see the LEDS through the lens, I doubt the cut-off is very accurate?

But then as the man said, accurate red/green cutoff just shows up our poor course keeping!

 

[jamie N]

Boycott this company, they're dishonest.
"Free Delivery on UK mainland orders over £100 excl. Highlands"

 

[ProDave]

Boycott this company, they're dishonest.
"Free Delivery on UK mainland orders over £100 excl. Highlands"

That's a shame, but not unusual.

 

[Biggles Wader]

Boycott this company, they're dishonest.
"Free Delivery on UK mainland orders over £100 excl. Highlands"

It says excl. Highlands rural in the ad. Does that mean only rural bits of the highlands or any rural areas? Either way it might be deemed discriminatory but hardly dishonest if clearly stated in the offer.

 

[Stemar]

To be fair, check with couriers how much they want to deliver something from SE England to Edinburgh, and how much to an isolated address 20 miles from Thurso. It's tough for the person wanting stuff delivered, but a delivery driver in Edinburgh can do do a delivery every few minutes, but the one based in Thurso may only be able to do one an hour.

Do Royal Snail still charge the same for anywhere in the country? If so, it may be why they're more expensive than others for urban stuff - the urbanites are subsidising isolated communities.

 

[Aja]

To be fair, check with couriers how much they want to deliver something from SE England to Edinburgh, and how much to an isolated address 20 miles from Thurso. It's tough for the person wanting stuff delivered, but a delivery driver in Edinburgh can do do a delivery every few minutes, but the one based in Thurso may only be able to do one an hour.

Do Royal Snail still charge the same for anywhere in the country? If so, it may be why they're more expensive than others for urban stuff - the urbanites are subsidising isolated communities.

Unfortunate that the original concept of the Post Office is no longer. 1d postage anywhere no longer applies.

Post Office managed it then - went not now.

 

[penfold]

The reason the mail is struggling is because neo-liberalism is apparently the only way things can be done; it's also the reason couriers do the aforementioned discrimination against ~20% of the nation, because they can.

 

[Stemar]

Is it discrimination, or just that it costs more to deliver up there?

 

[penfold]

It's both.