Bayonet vs screw bulbs

[brightspark]

led cures all the problems associated with heat and melting lamp holders no matter what the type

 

[DAPPH]

They were available many years ago, when old houses were screw in, when all you could get was the ‘new’ bayonet

Another case of regurgitating something old and labelling it as an advance

During my apprenticeship we were told The new bayonet is much safer than the ES as there is less chance of getting an electric shock if you touch the casing if the screw fitting is wired so the case contact is live which can happen if you forget to switch the light off or better still pull the fuse , just incase it is a two or three way switch arrangement .
Even more important BC is undone with a 1/4 of a turn against numerous twists to unscrew the thread of an ES bulb

check this wikki out about bayonet bulbs

https://en.wikipedia.org/wiki/Bayonet_mount

 

[DAPPH]

What's the best bang for buck to light a 6 metres X 5 metre conservatory in terms of led lighting. It's got a polycarbonate roof so it's light during the day but horrible at night....it's also Cold but that's another thread. Lol

We used a weather proof 15 mtr rope light fitted with tiny bulbs ( 200 watt IIRC ) to heat the conservatory as well as light it , then before winter came along I put in a wired in thermostatically controlled ceramic wall heater on a time clock , Crimbo diner for nine in our sunny warm glass roofed conservatory was brilliant .
We don't have a conservatory at this place but should we ever get one ( on a north facing wall ? ) we would allow for underfloor heating on a time clock like our wet room has .

 

[eddie49]

Even more important BC is undone with a 1/4 of a turn against numerous twists to unscrew the thread of an ES bulb

Yes, but those two spring-loaded pins in the BC base can often be fearsomely strong. Over the years, they can bore into the soft solder pads at the base of the bulb and lock it in, so that when you try to change the bulb the glass envelope loosens at the cement joint, or shatters in your hand.

 

[DAPPH]

Yes, but those two spring-loaded pins in the BC base can often be fearsomely strong. Over the years, they can bore into the soft solder pads at the base of the bulb and lock it in, so that when you try to change the bulb the glass envelope loosens at the cement joint, or shatters in your hand.

That's the same with the Edison Screw bulbs , repairing all manner of electronic & vehicle stuff , 40yrs ago they were quite common in stuff from the early 1970's I had several SES bulbs break in my fingers cutting my finger tips quite badly , ended up using rubber tubes on sticks to unscrew them ( tube pushes on the ball of the glass ) . That trick also works for bayonet bulbs and LED GU lamps if you use a bit of ( medium radiator sized ) rubber hose . The most of our original smooth lens glass GU 10 lamps came with their own suction sticker on a 75 mm long handle . The latest surface bare mount 36 LED lamps are a doddle to change as you can use the raised LEDs for finger tip grip .

Re :- The spring plungers on the old brown Bakelite MK holders yes , they can stick as you say , but I've had far more ES bulb problems than I ever did with bayonet bulbs , did you find that the case too ?

 

[Robotstar5]

That's the same with the Edison Screw bulbs , repairing all manner of electronic & vehicle stuff , 40yrs ago they were quite common in stuff from the early 1970's I had several SES bulbs break in my fingers cutting my finger tips quite badly , ended up using rubber tubes on sticks to unscrew them ( tube pushes on the ball of the glass ) . That trick also works for bayonet bulbs and LED GU lamps if you use a bit of ( medium radiator sized ) rubber hose . The most of our original smooth lens glass GU 10 lamps came with their own suction sticker on a 75 mm long handle . The latest surface bare mount 36 LED lamps are a doddle to change as you can use the raised LEDs for finger tip grip .....

Machinery panel indicator lamps and illuminated push buttons have the lamp (normally MBC or MES) recessed in a hole once you've removed the bezel, trying to use long nosed pliers normally breaks the glass, the manufacturers make a proper tool but a piece of soft walled rubber tube can normally be found to fit