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Mine Exploration Forum

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Author Fellows lamps forum.
royfellows

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Joined: 13/06/2007
Location: Great Wyrley near Walsall

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Posted: 12/11/2015 12:04:54
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Thanks for this, I respect your honesty.
Oss!

I am about to announce my wham- bammy and am toying with the idea of sending you my own to try out for an honest appraisal, me pay you postage back. Its on my website already, but no photos as yet.

Its obvious where I am going to now, light and small.
The first Trigons were 1600 lumens and weighed about 350 grams, the later all aluminium ones brought weight down to about 280 grams with power up to 1750 lumens.

I think maybe I am about to set a new standard in lightness and power! Watch this space.
Big Grin

Scurrion was the first to provide high quality LED lighting, but I was the first to put 1K on peoples heads.

EDIT
Mr S, don't forget you can carry spare helmet power packs for my lamps and change them underground or under water even. No messing with loose cells or opening battery cases.

--

...power is not physical strength, it comes from a lack of intent, an absence of mind, and is generated at the Hara which must be ones centre of gravity.
IP: 88.105.211.2 Edited: 12/11/2015 12:07:39 by royfellows
The Fresh Prince of Portreath

Joined: 05/08/2015

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Posted: 12/11/2015 16:00:21
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Roy, I know it's only a matter of time until you master the smaller and less battery-tastic lamps.

I was looking down a hole which had opened up earlier and had the MS on full blast, when I looked at an old lady behind me, she made a yelping noise when I accidentally shone it in her face!

I'm keen on seeing your latest efforts. I've noticed a few people with smaller RF Metal jobbies. I think the crux of the challenge is getting a totally helmet mounted trigon. Perhaps with a single LED for the flood....and a half sensible battery life. If I'm honest, the Trigon is bright enough. Anything more is just over the top.

Give me a shout when you're down again.

IP: 81.140.40.222
AR

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Joined: 07/11/2007
Location: Knot far from Knotlow in the middle of the Peak District

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Posted: 13/11/2015 13:49:12
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Saw this and thought of Roy.... http://xkcd.com/1603/ Laugh

--

Oh God of Sarcasm, thanks for everything...
IP: 165.225.80.105
royfellows

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Posted: 13/11/2015 16:21:37
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I am announcing the Dragon D1800 as a replacement for the now discontinued D1200

By virtue of its unique combination of small size and weight, efficiency, low cost, and maximum power; combined with sustainability of heat sink platform and battery output, the lamp sets a new standard in underground lighting.

Similar to the now defunct D1200, it has 4 emitters. The beams are now powered by Cree XP-Ls up to a maximum output of over 1600 lumens, which combined with the XP-G2 down lighters gives a maximum of over 1800 lumens, albeit from a lamp which weighs only 125 grams.

I have had the lamp on full power underground for over five minutes in which time it got warm but not what I would call hot, so we have in effect the first true lightweight ‘bat cooker’.
The standard mode is still 250 lumens which gives steady output for over 12 hours from the light 2 cell ‘red band’ power pack. It then diminishes but continues to burn for up to 24 hours on diminishing output.

The lamp is truly an all round lamp being small and light enough to use as a work lamp or as a ’bat cooker’ for exploring big slate caverns. Personally I regard it as a milestone in my lamp production.

My original concept as I have written before was inspired by the Stenlight. I am not a fan of polycarbonate lenses as eventually they get scratched and scuffed and loose the light pattern. The Sten shape with small 20mm glasses minimised the glass area thus saving considerably on weight.
I never envisaged though that my original concept would lead to something like this.

Of course, the big bat cookers with their incredible flood lights will remain favourite for photography, but this is now my lamp of choice for everything else.

Price is £135 plus postage.



(click image to open full size image in new window)



(click image to open full size image in new window)


--

...power is not physical strength, it comes from a lack of intent, an absence of mind, and is generated at the Hara which must be ones centre of gravity.
IP: 88.105.211.2
Graigfawr

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Posted: 13/11/2015 19:43:55
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Surely inspired by RF lamps: http://xkcd.com/1603 Wink IP: 92.3.234.102
JR

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Posted: 14/11/2015 00:00:40
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Sounds plausible. Laugh

--

sleep is a caffeine deficiency.
IP: 2.30.199.195
royfellows

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Posted: 17/11/2015 11:21:04
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Dragon D1800
Temporarily sold out, please enquire.

Expect another batch ready by end of week and re ordering components.

--

...power is not physical strength, it comes from a lack of intent, an absence of mind, and is generated at the Hara which must be ones centre of gravity.
IP: 88.105.211.2
The Fresh Prince of Portreath

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Posted: 17/11/2015 11:59:01
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I'd like to see how that stacks up against the Trigon, light quality wise.

I find myself liking the middle beam setting a lot. I barely use the flood.

We went into TWH the other day and one of my chums was wearing the Trigon and I had the MS on. Other people had a variety of light sources and the big ones were a whole different world. Given a bit of reflection, I think quantity over quality always wins light wise! Laugh

IP: 81.140.40.222
royfellows

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Posted: 17/11/2015 12:24:46
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The Fresh Prince of Portreath wrote:

I'd like to see how that stacks up against the Trigon, light quality wise.



Not quite as good due to small 20 mm reflectors, but does tend to light the place up. Definitely a bat cooker. Also colour temperature is warmer, some may prefer this. If you like crispness, the one to look at is the X2000, the reflectors are seriously good and there is a nice effect with the foot level supplementary lighting. If you ever have to come up here you must call in.

The Fresh Prince of Portreath wrote:



I find myself liking the middle beam setting a lot. I barely use the flood.



I know what you mean about middle beam, best compromise between output and battery time for me with helmet packs.

I use the flood on the Lynx for photography, but find the 3000 model as good to use as the big 6000, plus I dont like wires hanging down my back and prefer helmet packs.

Also I have become a big fan of mixing flood and beam, all the new models do this in one way or another. Flood lights up your feet, beam does the distance, its nice.
Scurion were on the right track from the start.

Trouble with the Oldham conversions was the limitations of the switch and lack of room inside. MS overcame this but at the cost of size and weight.

Daft as it sounds I am still using the same electronic components as did in the Oldhams. If something works why try and fix it?

--

...power is not physical strength, it comes from a lack of intent, an absence of mind, and is generated at the Hara which must be ones centre of gravity.
IP: 88.105.211.2
royfellows

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Posted: 09/02/2016 21:35:48
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The Lynx SAR 5000
I am announcing the Lynx SAR (Search And Rescue) lamp as latest in this line of lamps.
It is primarily designed for a specific purpose as its name suggests, however I expect that it will become a popular lamp for the exploration of large underground spaces such as slate mines.

It is basically designed to give maximum possible beam power. This is done by 4 Cree XML 2 U2 emitters mounted behind centre spot reflectors as already used in some of my existing lamps.

A lamp of this type has been in my mind for some time and was originally envisaged as running from a supply voltage of 16.8 volts from 4S Li Ion cells fresh off charge, with the emitters wired in series as my normal practice. However this proved impracticable for several reasons. I saw charging as been done from a laptop charger with balancing and protection electronics built into the power pack. However, I have personal differences with belt mounted batteries, trailing wires etc, and with the emergence of new Li ion technology the possibility of such a lamp being powered by a helmet pack became a possibility. The issue was the 4S cells necessary, which would really have to be 2P by 4S, a total of 8 cells. Some helmet mounted battery pack!

The solution is to mount the beam emitters in two separate banks of 2 series, running from an input voltage of 8V (7.4V nominal). I have however done this in the past with the last of the MagnumStars with the front extension. Up until this design that lamp was the most powerful beam lamp I had ever designed, there are some of these out in the wild, still in use and giving good service.

The result is a new lamp and new battery pack designed specifically for this model which houses 6 cells, 3P by 2S with MOSFET based protection electronics designed for up to 10 amps output. The power pack houses all the cells in flat configuration and is actually quite manageable. The lamp weighs in at 300 grams same as the X6000 and the big battery, the 8HD6 at 460 grms which is not ridiculous. Dimensions are 120mm X 80mm



(click image to open full size image in new window)

One issue with lamp design is getting effective size reflectors into a reasonable size lamp. I have achieved this by reducing the number of bare flood emitters to 2, this ties in nicely with the supply voltage.



(click image to open full size image in new window)

Other features of the lamp have been developed from existing models.

There is a centrally mounted downlighter bearing 2 XML 2s at 200mA independently switchable, this idea is from the D1800 and is made from solid machined aluminium.

There is the blue ‘Nightrider’ battery fuel gauge, this is switched by turning the lamp upside down as in the X2000.



(click image to open full size image in new window)

There are 2 double throw switches, SW1 controls Beam Array no 1 at walk mode of 200 lumens, medium, and high at 2250 lumens @25 C. And Floods at low, medium and high, same maximum output as the beams.

SW2 controls Beam Array no 2 at pilot, medium, and high. And also the single mode downlighter.
It would have been sexy to have several modes on the downlighter but this is not achievable in the available space.

Inside the lamp there are 3 seperate switch mode drivers plus a small liner driver for the downlighters. Space has been utilised to maximum to accommodate all this by a change in design from mounting electronics on the back of the frontplate to mounting it all on the backplate. Also it’s actually the first lamp that I have designed on a computer, all the others where the great big drawing board in my head.

The combined full beam power of 4500 lumens from centre spot reflectors is worth seeing. The walk mode supplemented with the foot level downlighters is wicked.



(click image to open full size image in new window)

The two track heat sink platform of the big Lynx lamps is very effective and I expect that maximum power will be sustainable under most underground and outdoor conditions.

At this point in time there is no stock of this lamp until I have completed my own testing and evaluation. However I expect it to prove itself OK and will probably be in stock after Easter.

There are no plans to discontinue any of the existing models, this is an addition.

--

If someone spends money advertising a 'free' download then we are not being told something. HANDS OFF OUR COMPUTERS.
IP: 92.24.113.185 Edited: 09/02/2016 21:42:10 by royfellows
ChrisJC

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Posted: 10/02/2016 19:11:12
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I look forward to seeing in action at some point Roy when our paths next cross.

Chris.
IP: 178.109.53.187
ttxela

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Joined: 04/09/2007
Location: Cambs

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Posted: 10/02/2016 19:26:55
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Looks Excellent Roy!

My MagnumStar has not had an outing for a while but plans are afoot for March Smile
IP: 86.129.252.150
rhychydwr

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Joined: 09/06/2007
Location: Cwmparc, Rhondda, South Wales, UK.

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Posted: 10/02/2016 20:14:53
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Can I fry a bat on it?

--

Cutting coal in my spare time.
IP: 213.1.29.138
gNick

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Posted: 11/02/2016 11:45:58
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rhychydwr wrote:

Can I fry a bat on it?


Sounds like you could fry a bison on in never mind a bat Smile

--

Don't look so embarrassed, it's a family trait...
IP: 2.29.93.169
royfellows

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Posted: 06/03/2016 21:29:28
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I have tested the new lamp for the first time, being busy with other matters.
Testing was in a big limestone mine which I refuse to name.

The output was as expected and I am pleased to say that the Lynx heatsink platform coped very well. I did have it on full power for some longish intervals but the lamp didn't appear to overheat. Its easy to test this by just feeling the copper plate at the back.

I have yet to test the lamp in an ordinary mine, rather than an underground version of the M6, but the combined standard mode and downlighter appear to give a nice adequate balanced output.

I was also pleased that weight was manageable, but feel that a well designed helmet such as my Ecrin Roc is essential for this.

Out of the mine, and I was wondering about for a few hours, I got two blue lights on a battery check (50%), immediately after switch off. Back at home I got three (75%).

The only thing I found was that my choice of downlighter emitters, T6s, are a different colour temperature to the U2s of the beams. T6s are a high colour temperature, almost into blue, while the U2s are a warmish colour.
Its probably just me being finicky, but I shall match them on production models.

Its the best bat fryer I have produced yet, no doubt about that.

--

We are what we are through what we become.
IP: 88.105.227.176
mistericeman

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Posted: 06/03/2016 21:32:14
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Teasing ......

Come on Roy ...when can we buy one Wink
IP: 82.31.98.113
royfellows

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Posted: 06/03/2016 21:42:02
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I expect to have stock after Easter.

--

We are what we are through what we become.
IP: 88.105.227.176
mistericeman

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Posted: 06/03/2016 21:59:16
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Will the SAR be available with the belt battery Roy ...

As much as I appreciate the benefits of a helmet mounted battery ....
I personally would prefer something belt mounted to keep weight on my helmet (Pfnarr pfnarr ) as low as possible
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royfellows

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Posted: 07/03/2016 12:39:40
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Can do
Big Grin

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We are what we are through what we become.
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ant89

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Posted: 09/03/2016 18:06:20
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What size are the screws on the lynx lamps? I've lost one! IP: 87.115.113.21
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