Fibre flare optical efficiency vs reverse red led on surface

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Brucey
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Joined: 4 Jan 2012, 6:25pm

Re: Fibre flare optical efficiency vs reverse red led on sur

Post by Brucey »

I thought there was a 2.7V 0.3A bulb for the rear. Mind you we are talking about ancient history here.

cheers
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~~~~~~~~~~~~~~~~~~~~~~Brucey~~~~~~~~~~~~~~~~~~~~~~~~
SA_SA_SA
Posts: 2360
Joined: 31 Oct 2009, 1:46pm

Re: Fibre flare optical efficiency vs reverse red led on sur

Post by SA_SA_SA »

Brucey wrote:I thought there was a 2.7V 0.3A bulb for the rear,

I don't remember such a bulb in the official list of cycle bulbs in BS6873 (now irrelevant because the RVLR legal reference to it was deleted). And it was the extra current draw that made me ask Ever ready why they hadn't fitted the expected 0.3A 2.5V bulb to my new rear lamp :) . EDIT I was mainly writing because the lens prisms made me think it would have a wide even beam like a rear car lamp hence I was rather disappointed with the tiny (but very bright) letter box beam shape.

NB what does your optical knowledge say about my original posts' question :)
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Brucey
Posts: 44517
Joined: 4 Jan 2012, 6:25pm

Re: Fibre flare optical efficiency vs reverse red led on sur

Post by Brucey »

SA_SA_SA wrote: NB what does your optical knowledge say about my original posts' question :)


did you see the edit to my earlier post?

cheers
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~~~~~~~~~~~~~~~~~~~~~~Brucey~~~~~~~~~~~~~~~~~~~~~~~~
SA_SA_SA
Posts: 2360
Joined: 31 Oct 2009, 1:46pm

Re: Fibre flare optical efficiency vs reverse red led on sur

Post by SA_SA_SA »

Brucey wrote:....did you see the edit to my earlier post?....


No, sorry, I have read it now, Thanks :)
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Cunobelin
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Joined: 6 Feb 2007, 7:22pm

Re: Fibre flare optical efficiency vs reverse red led on sur

Post by Cunobelin »

Brucey wrote:I thought there was a 2.7V 0.3A bulb for the rear. Mind you we are talking about ancient history here.

cheers



I used to cheat

You could get replacement bulbs that were "LEDs", slightly brighter and a much longer battery life... but then again shwing my age

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