G9 LED bulbs

[DrFfybes]

The other thread on 'normal' size bulbs was useful, but has anyone any experience with the G9 fitting ones?

Mum has a lot in her house, and they blow regularly (probably due to being overpriced cheap ones from the village) and so the 'young man' upstairs (aged 70) keeps replacing them for her.

I'd like to swap them for LED, but don't want to spend £20 finding one she likes.

The 2 constraints are output and size.

All her lights are 40W or more, except the odd desk lamp, so I guess I'm looking at 300+ lumens, which don't appear to exist.

The 270 lumen ones also look quite big, has anyone tried them and found them to protrude irritatingly from the shade, or do you just not notice after a day or 2?

thanks

Paul

[staffordian]

No personal experience of this size but Screwfix have some LEDs on sale and I've just been looking at reviews for some of the G9s. All good as you might expect, but some (all?) are c 5cm long so certainly a consideration in some fittings.

Most reviewers say they are brighter than their previous halogen bulbs so brightness might not be a big issue

Staffordian

[tjh290633]

I recently bought some 470 Lumen LED candle bulbs from Tesco, BC, but they also sell ES and SBC fittings. £5 a go. Equivalent to 40W it says on the label.

Have a look at what they have.

TJH

[DrFfybes]

Thanks Staffordian,

A standard G9 is 40mm, but this includes the 8mm or so of wire bits that go into the fitting. Do you know if the 50mm quoted on the website includes that bit, or is it just the 'top' part?

TJH - getting high output 'normal' bulbs isn't a problem these days, but the G9 ones are thumb size and some only have LEDs on the end, some on the sides.

Paul

[bungeejumper]

I bought five of these in June for a kitchen ceiling light, and they've been fine. Light output from a 5W bulb is easily 40 watts equivalent, and I gather that you can go up to 8W or beyond if you want them even brighter.

http://www.ebay.co.uk/itm/LEORX-G9-LED- ... 1eb5d0c73a

BJ

[csearle]

A standard G9 is 40mm, but this includes the 8mm or so of wire bits that go into the fitting. Do you know if the 50mm quoted on the website includes that bit, or is it just the 'top' part?
Paul

The ones to which BJ links poke out only 3cm, look at this.

Regards,
Chris

[sg31]

When I was sorting out lighting for this house about a year ago I considered GU9 LED lamps. I was warned off them by a couple of supposed experts who specialised in LED lighting. They were independent of each other and both said the same thing , the GU9 had a much higher failure rate then other LED lamps because they were too small to dissipate the heat properly.

I've no idea if these guys were right or if things have improved in the last year. I just mention it as something to consider.

[ChiliMonster]

This is something I've been looking into in recent weeks in trying to complete my total conversion to LED bulbs in my new house, with the bedroom light fitting taking 2 G9s. The existing halogen bulbs both failed in quick succession prompting my search. It is indeed difficult to find LED G9s with more than 300 or 400 lumen, certainly not in any high-street or mainstream online supplier, forcing me to look at Amazon and eBay sellers, invariably in China.

First I ordered 2 of these http://www.lightinthebox.com/g9-6w-500l ... TB20161009

but when they turned up four weeks later they were really dull. I requested to return them, but the seller said it was too much hassle to post them back, so they gave me a full refund without return. That's great, but it's 4 weeks on and I have no lights. So, then I ordered two of the 12W 800lmn bulbs from here http://www.ebay.co.uk/itm/262317315414. It is still slim, but a little longer.

Again, after three weeks they turned up but were too dull. This time I was offered and accepted a 50% refund for no return. As 500Lmn and 800lmn bulbs weren't doing it, I decided I had to go for the bigger bulbs, which I guessed would probably just about fit inside my fitting. I ordered these 14W 1200lmn big boys https://www.amazon.co.uk/dp/B017IF9VG8/ ... 71_TE_item

Eventually they turned up and were bright...for about 3s after turning on, then they dropped down to not-quite-as-dull-as-all-the-others brightness. This happens every time the switch is turned on. Again offered a partial refund with no return.

So, I'm still looking.

I'm almost tempted to say "sod it" and go back to halogens, but when I see them on the high street, they are typically 370lmn, which is not enough, apparently. I'd be happy to hear if anyone has found something good.

ChiliMonster

[bungeejumper]

The existing halogen bulbs both failed in quick succession prompting my search.

Halogens (well, in BC standard bulb sizes anyway) drive me nuts. They're pricey, and no matter what brand I buy, they never seem to last more than four or five months. My best guess is that this is because we live in a rural area where the electricity is less stable than in the towns - farm machinery and other stuff can cause voltage spikes. But if they're doing the same thing for townie Lemons, then I'll have to rethink that theory.

The other thing I've noticed is that when I replace one of the halogens in a two-bulb fitting, I can be pretty sure that the other one will soon pop as well. This is something that I used to notice with car headlight bulbs, which are also mostly halogen. Can it be a coincidence?

BJ

[sg31]

When I lived in Brighton most of our lights were halogen GU9. They failed on a regular basis. We had 20 or so bulbs in regular use and it seems I was replacing one or more on a weekly basis. It was probably less in the summer months.

They always seemed to fail when the light was first switched on, rarely when already on. I've no idea why.

[csearle]

They always seemed to fail when the light was first switched on, rarely when already on. I've no idea why.

The filaments have a lower resistance when cold, so they draw more current, dissipate more power, and so, any point of the filament that is on the brink will often choose that moment to fail.

Regards,
Chris

[sg31]

Thanks CS, that makes sense.