Jump to content

Led's .. Advice Please


Disco Kid
 Share

Recommended Posts

I am looking at replacing the halogen bulbs in the spotlights above the front end beds.

 

At the moment they are G4 fitting, bell shaped, about 35mm diameter held by a circlip.

 

There seem to be some direct replacements, but they are a lot more expensive than eg 25smd circular units with back pins.

 

The current 'bulbs' are 35mm diameter, but I can only find 25mm diameter smd back pin units.

 

Is there an accepted way to fix these 25mm versions.

 

(Hope I have the correct terminology, and that you understand what I mean)

 

Can the existing bulbs be dismantled, I wonder? They look to have a typical halogen capsule inside

Edited by old hand

Roughing it . . but in comfort . .

Link to comment
Share on other sites

Are you sure they are g4 as they sound like mr11?

The mr11 downlighters in our bailey were like you describe held in with a circlip.

Edited by rusty63
Link to comment
Share on other sites

Are you sure they are g4 as they sound like mr11?

The mr11 downlighters in our bailey were like you describe held in with a circlip.

That's what I was thinking. . - Do they look like these ---> http://www. ultraleds. co. uk/led-product-catalogue/caravan-motorhome-leds/mr11-gu4-35mm. html

An eye for an eye only ends up making the whole world blind.

Mahatma Gandhi

Link to comment
Share on other sites

Are you sure they are g4 as they sound like mr11?

The mr11 downlighters in our bailey were like you describe held in with a circlip.

 

Ah . . now there you have me . . (there's no substitute for knowing what you are doing)

 

I have had one out some time back, and since it had two straight pins 4mm or so apart I assumed it was G4, so I've just been and got one from the 'van. Yes, looks like what you say.

 

I'm glad I posted . . saved me some money. thanks.

 

Back to the sketch pad (can't afford a drawing board.)

 

So MR11 indicates Multi facet reflector 11 eighths diameter with a GU4 connection . .

 

I am constantly amazed at how much I don't know.

Edited by old hand

Roughing it . . but in comfort . .

Link to comment
Share on other sites

yes i just checked ours and they are called mr11 gu4.

they are difficult to get hold of at a sensible price if you need the ones with the glass cover on them?

I was recommended a china based seller on ebay and they only cost about £6 for 5 delivered. Took about three to four weeks delivery. Can post the item number if these are the type you want.

I originally bought ten to replace them all and then bought another five in case I needed spares but not used any of those yet.

Link to comment
Share on other sites

yes i just checked ours and they are called mr11 gu4.

they are difficult to get hold of at a sensible price if you need the ones with the glass cover on them?

I was recommended a china based seller on ebay and they only cost about £6 for 5 delivered. Took about three to four weeks delivery. Can post the item number if these are the type you want.

I originally bought ten to replace them all and then bought another five in case I needed spares but not used any of those yet.

Then the ones in my link above are a bargain. .. They have a full glass cover and are identical in size to the halogen bulbs. Also they are fitted with a voltage regulator so they last a long time and do not overheat and work from 11v to 23v.

I have had mine for over 3 years and have not had any issues.

An eye for an eye only ends up making the whole world blind.

Mahatma Gandhi

Link to comment
Share on other sites

Thanks . . found several from the far east at competitive prices . .

 

still to decide, do I have Cool or Warm white?

 

They are spot lights, but in the 'lounge area' . . Have put cool G4's capsule style above the kitchen, and they are very clinical

Roughing it . . but in comfort . .

Link to comment
Share on other sites

I bought warm white. Fractionally a bit less bright but the same "colour" light as the original halogen ones.

Link to comment
Share on other sites

I went for warm white. They are a good colour, not too intense.

An eye for an eye only ends up making the whole world blind.

Mahatma Gandhi

Link to comment
Share on other sites

at the risk of sounding thick. .. why change ?

A few reasons :-

 

  • Much less heat output, less damage to bulb holders, wiring and light casings. The ones in my van started to melt :o
  • Longer life, less likelihood of having to change them while away and less chance of failure.
  • Less prone to vibration damage from travelling? Not sure about this. ..
  • Much lower power usage, less strain on transformer and much longer battery life when off-grid camping.

An eye for an eye only ends up making the whole world blind.

Mahatma Gandhi

Link to comment
Share on other sites

OK . . Hopefully last query . ..

 

3258 or 5050 LEDs

 

24 3258's give about 104 lumens for 1. 5 watts

12 5050's give about 140 lumens for 2. 5 watts

 

so 5050's give more lumens (at a wattage cost, but still less than Halogen (1 halogen capsule gives 100 lumens for 9 watts)), but they don't seem to be glass sealed so a risk of shorting with the circlip . . can I get plastic circlips? cover with clingfilm?

 

nine 5050s appear to be set within the 'bell' but that's giving up 25% compared to the twelve 5050 units .

 

What is the recommendation of 'those that know'?

Edited by old hand

Roughing it . . but in comfort . .

Link to comment
Share on other sites

Mine are 24 3528 SMD warm white with the glass covers. These were all that were available when I bought mine in the MR11 GU4 range.

I dont think it would be a good idea to use any without the cover glass.

Changing to LED made a huge difference to the power consumption and the power supply that used to be v hot is now luke warm.

Edited by rusty63
Link to comment
Share on other sites

All info read, learned and now being inwardly digested . .

 

Thanks Fellas.

Roughing it . . but in comfort . .

Link to comment
Share on other sites

Join the conversation

You can post now and register later. If you have an account, sign in now to post with your account.

Guest
Reply to this topic...

×   Pasted as rich text.   Restore formatting

  Only 75 emoji are allowed.

×   Your link has been automatically embedded.   Display as a link instead

×   Your previous content has been restored.   Clear editor

×   You cannot paste images directly. Upload or insert images from URL.

 Share

×
×
  • Create New...