Mine exploration, photographs and mining history for mine explorers, industrial archaeologists, researchers and historians Mine explorer and mining history videos on YouTube Connect with other mine explorers on Facebook
Tip: do not include 'mine' or 'quarry', search by name e.g. 'cwmorthin', use 'Sounds like search' if unsure of spelling

Advanced Search
'Sounds like search'
Quick a b c d e f g h i j k l m n o p q r s t u v w x y z
Tip: narrow down your search by typing more than one word and selecting 'Search for all words' or 'Exact search'

Search for any word
Search for all words
Exact search
Tip: narrow down your search by typing more than one word and selecting 'Search for all words' or 'Exact search'

Search for any word
Search for all words
Exact search

Mine Exploration Forum

Author Betty - 1,500 lumens on your head
Vanoord

Avatar of Vanoord

Joined: 28/11/2005
Location: North Wales

View Profile
View Posts
View Personal Album
View Personal Files
View all Photos
Send Private Message
Betty - 1,500 lumens on your head
Posted: 26/01/2009 13:19:46
Reply |  Quote
Came across this when looking for something else: [web link]

Now then, aside from the fact that this is called Betty (there's also a Wilma!), the spec is pretty impressive: it's a 7 LED unit that produces a staggering 1,500 lumens.

- 23W Power LED lamp
- 1500 Lumens
- Advanced Lens Disk 16°
- Frontglass anti-reflection coated
- 23/9/0,25 Watt
- 3D adjustable mount
- LED monitor
- H-mount
- 120 cm ex cable
- Li-Ion rechargeable battery 7.5 Ah,
- Battery charger: charging current 2.5 A , 12 V car adaptor.
- With headband
- 120cm extension-cable
- Colour/headbelt: blue
- Burn time @ 23 W: 3 hours
- Burn time @ 9 W : 7 hours
- Burn time @ 1 W : 44 hours
- Burn time @ 0,25 W: 168 hours (1 week non-stop)
- Charging time: 4 hours
- Weight: 470 g

There is, of course, a price to be paid for this - and that is €865 - or about £815 at today's exchange rate! Shocked

I doubt one of these is ever likely to see the inside of a UK mine and furthermore, I suspect it would prove to be a hindrance rather than an asset of used at full power, but all the same it's interesting to see what the world of orienteering (or indeed freeriding bikers) apparently requires!



EDIT: what also caught my eye is the way the price is broken down. The headlamp alone retails at €540 (£510) but the 7.5Ah battery is a surprising €169 (£159). This really doesn't compare well with the Stenlight 5.0Ah battery which retails at £59.99 [web link]. There's also a 15Ah battery for the Betty at €290 (£273), but that's still 50% more expensive than the Sten battery when considered Ah for Ah.

--

Filling space until a new signature comes along...
IP: 81.139.19.61 Edited: 26/01/2009 13:34:04 by Vanoord
Mr Mike

Avatar of Mr Mike

Joined: 09/06/2007
Location: Bury - In The Laboratory

View Profile
View Posts
View Personal Album
View Personal Files
View all Photos
Send Private Message
Betty - 1,500 lumens on your head
Posted: 26/01/2009 15:04:13
Reply |  Quote
I've come across this site beore, impressive ammounts of light, but as you point out - THE PRICE. Maybe it is the LED lighting equivalent of the BMW, since its made in Germany??

--

Mr Mike
IP: 79.66.9.173
pacef8

Joined: 20/12/2008

View Profile
View Posts
View Personal Album
View Personal Files
View all Photos
Send Private Message
Betty - 1,500 lumens on your head
Posted: 26/01/2009 21:39:28
Reply |  Quote
betty is indeed an arm and a leg. i got the wilma at trade from a friends bike shop its the dogs bllx. brilliant blue led light that doesn't tire the eyes even through the night on a 24 hour mtb enduro. 4 hours to recharge metal housing and pin sharp focus.

its the best light i have owned.but for 300 quid it should be.

i did see a second hand good one for 240 once.

very good for last weeks moel ferma trip

http://www.flickr.com/photos/pacef8/




IP: 86.130.122.85
Moore Books: Specialist Books I.A. Recordings: Mining and Industrial History DVDs Starless River - Caving Store Explore a Disused Welsh Slate Mine
Disclaimer: Mine exploring can be quite dangerous, but then again it can be alright, it all depends on the weather. Please read the proper disclaimer.
© 2005 to 2015 AditNow.co.uk
Top of Page