Yet Another Cycling Forum

General Category => The Knowledge => Topic started by: mattc on 13 September, 2019, 07:29:15 pm

Title: Improving a very directional light
Post by: mattc on 13 September, 2019, 07:29:15 pm
I believe the Magic shine front lights have a lateral diffuser-type adaptor that spreads the beam around a bit more.

Are there any similar bodges possible for the many rear lights that suffer a lack of spread?
Title: Re: Improving a very directional light
Post by: Andy64 on 13 September, 2019, 07:44:45 pm
A fresnel lens is what you need.
Depending what part you cut out of it, it will widen or narrow your light beam
Ebay probably the best bet
Title: Re: Improving a very directional light
Post by: Phil W on 13 September, 2019, 08:26:49 pm
Bubble wrap
Title: Re: Improving a very directional light
Post by: Jurek on 13 September, 2019, 08:36:55 pm
And  Vaseline.
Title: Re: Improving a very directional light
Post by: grams on 13 September, 2019, 08:43:01 pm
Translucent deodorant lid.

Exposure will sell you one for £8.99:

https://www.google.co.uk/search?q=exposure+beacon+diffuser&client=safari&hl=en-gb&prmd=sivn&source=lnms&tbm=isch&sa=X&ved=2ahUKEwjPobqCx87kAhXTfMAKHVuHCYIQ_AUoAnoECAwQAg&biw=414&bih=622
Title: Re: Improving a very directional light
Post by: Tim Hall on 13 September, 2019, 10:53:25 pm
Quote from: phil w on 13 September, 2019, 08:26:49 pm
Bubble wrap
Quote from: Jurek on 13 September, 2019, 08:36:55 pm
And  Vaseline.

The hoped for follow up hit to "Milk and Alcohol". Sadly it it got nowhere.
Title: Re: Improving a very directional light
Post by: mattc on 18 September, 2019, 07:06:18 pm
Wasn't that an Oasis song?
Title: Re: Improving a very directional light
Post by: fuaran on 18 September, 2019, 08:26:46 pm
Fit a modern super-bright LED inside an old Eveready bike light.
(https://i.ebayimg.com/images/g/US4AAOSwEP9ccxG1/s-l1600.jpg)
Title: Re: Improving a very directional light
Post by: Frank9755 on 19 September, 2019, 01:06:34 pm
This is what I use:
https://www.candb-seen.co.uk/product-39mm-diffused-lens.html (https://www.candb-seen.co.uk/product-39mm-diffused-lens.html)
Title: Re: Improving a very directional light
Post by: Cudzoziemiec on 19 September, 2019, 01:08:44 pm
Quote from: mattc on 18 September, 2019, 07:06:18 pm
Wasn't that an Oasis song?
Or a film by Jim Jarmusch?

Or was Tim actually thinking of cling film rather than bubble wrap?
https://metro.co.uk/2018/03/24/really-wouldnt-recommend-blackhead-melting-cling-film-vaseline-trick-7413781/
Title: Re: Improving a very directional light
Post by: andyoxon on 19 September, 2019, 02:37:37 pm
Quote from: mattc on 13 September, 2019, 07:29:15 pm
...Are there any similar bodges possible for the many rear lights that suffer a lack of spread?

I DIY diffusers for my seatstay-mounted Smart 1W rear lights, from small white plastic containers; very effective due to the power of the lights.

edit
Title: Re: Improving a very directional light
Post by: rr on 19 September, 2019, 03:12:07 pm
Quote from: mattc on 18 September, 2019, 07:06:18 pm
Wasn't that an Oasis song?
Doctor Feelgood used the title first.

Sent from my moto x4 using Tapatalk

Title: Re: Improving a very directional light
Post by: mattc on 19 September, 2019, 07:22:59 pm
Quote from: rr on 19 September, 2019, 03:12:07 pm
Quote from: mattc on 18 September, 2019, 07:06:18 pm
Wasn't that an Oasis song?
Doctor Feelgood used the title first.
There's a Doctor Feelgood record called Bubble Wrap and Vaseline? You learn something every day ...
Title: Re: Improving a very directional light
Post by: Jurek on 19 September, 2019, 07:55:27 pm
Quote from: Tim Hall on 13 September, 2019, 10:53:25 pm
Quote from: phil w on 13 September, 2019, 08:26:49 pm
Bubble wrap
Quote from: Jurek on 13 September, 2019, 08:36:55 pm
And  Vaseline.

The hoped for follow up hit to "Milk and Alcohol". Sadly it it got nowhere.

Bzzzt!
Repetition:
'it it'.
Title: Re: Improving a very directional light
Post by: Cudzoziemiec on 19 September, 2019, 08:02:44 pm
Quote from: mattc on 19 September, 2019, 07:22:59 pm
Quote from: rr on 19 September, 2019, 03:12:07 pm
Quote from: mattc on 18 September, 2019, 07:06:18 pm
Wasn't that an Oasis song?
Doctor Feelgood used the title first.
There's a Doctor Feelgood record called Bubble Wrap and Vaseline? You learn something every day ...
I thought it was by Blur.