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Posts by royfellows

Showing 3848 results below:

Author Message
Topic: My Oldham Conversions
royfellows

Forum: Lamps & Lighting   Posted: 02/04/2010 14:11:18   Subject: My Oldham Conversions
[quote="Morlock"]

One further question, am I correct in thinking that the LED set up is probably more shock resistant than a bulb? [/quote]

My opinion, definately yes, I have had
Topic: My Oldham Conversions
royfellows

Forum: Lamps & Lighting   Posted: 02/04/2010 10:27:35   Subject: My Oldham Conversions
For what its worth:
The old Oldham front seal I regard as US without the old reflector, its better replaced with a new one like the one Mr Mike supplies with his Retro conversions. Unless of cour
Topic: Devils Gorge Loggerheads: Any info?
royfellows

Forum: North Wales   Posted: 29/03/2010 20:24:25   Subject: Devils Gorge Loggerheads: Any info?
[quote="martymarty Devils Gorge was originally a spar mine
;D [/quote]

Ha, I climbed up into the workings a few years ago and saw what I believed to be spar, so I was right.
Any
Topic: Devils Gorge Loggerheads: Any info?
royfellows

Forum: North Wales   Posted: 29/03/2010 18:52:36   Subject: Devils Gorge Loggerheads: Any info?
Hi Gang
I was walking around the river Alyn on Saturday and included my old favourite the Devils Gorge.
There are a couple of other stopes just off the Leete Walk. Can anyone explain more, w
Topic: Events and meets for 2010
royfellows

Forum: Events   Posted: 25/03/2010 14:10:01   Subject: Events and meets for 2010
Hi gang
This will gave to be later in the year as I have still work to do in there, to complicate matters I have been poorly for weeks and still not much better.

I have overhauled all
Topic: My Oldham Conversions
royfellows

Forum: Lamps & Lighting   Posted: 18/03/2010 10:32:50   Subject: My Oldham Conversions
Very nicely made, it has the look of being very precicely engineered.
Topic: Black Engine Shaft (photo)
royfellows

Forum: Midlands   Posted: 12/03/2010 14:51:18   Subject: Black Engine Shaft (photo)
Me again
Working back from Perranporth towards Cligga with aluminium ladders for the high holes, was greeted by an exited crowd.

"That was quick, the helicopter only went over 5 minute
Topic: Black Engine Shaft (photo)
royfellows

Forum: Midlands   Posted: 11/03/2010 20:11:57   Subject: Black Engine Shaft (photo)
Many many years ago in a far off land a certain individual well known in the mining community had his OS maps all marked with neat little crosses all representing mining sites.

One day he s
Topic: Luxeon III leds up for grabs
royfellows

Forum: Lamps & Lighting   Posted: 11/03/2010 17:49:15   Subject: Luxeon III leds up for grabs
[quote="simonrl"]Just to clarify - these are free to anybody who wants some / all.[/quote]

Simon cant give em away!
:lol: :lol: :lol:
Topic: Black Engine Shaft (photo)
royfellows

Forum: Midlands   Posted: 11/03/2010 16:21:51   Subject: Black Engine Shaft (photo)
Mr AR you not a pedant, I like things right.

All sorted, thanks.
Topic: Minera - a future show mine?
royfellows

Forum: North Wales   Posted: 09/03/2010 20:27:15   Subject: Minera - a future show mine?
Mmm, they have managed to bring the buzz words "diversity" and "sustainability" into the equation and possibly have people working on establishing some connection with climate change, so funding shoul
Topic: Rockley Engine House Iron Mine
royfellows

Forum: North West England   Posted: 02/03/2010 13:54:20   Subject: Rockley Engine House Iron Mine
Its just my little joke, I have to have my bit of fun now and again.
But the pushpin on the google map is right in the middle of motorway.
Topic: Rockley Engine House Iron Mine
royfellows

Forum: North West England   Posted: 01/03/2010 19:00:02   Subject: Rockley Engine House Iron Mine
The photo came up on my screen as a random selection and I just wondered where it was.

Of all the mines in the database this must be the easiest to find being right in the middle of the M1
Topic: Roys Underground Photo/Divers Lamp
royfellows

Forum: Lamps & Lighting   Posted: 25/02/2010 22:40:44   Subject: Roys Underground Photo/Divers Lamp
Cant see Tony Blair being put on trial, but we can make do with Tony Oldham
Topic: Shaft Capping - the process
royfellows

Forum: General Chat   Posted: 24/02/2010 20:25:03   Subject: Shaft Capping - the process
I have to come in on this.
At Frongoch, I capped the adit shaft myself working with a friend at a cost of about £250.

Working on a rope I cleared away the top soil and loose stuff to g
Topic: Roys Underground Photo/Divers Lamp
royfellows

Forum: Lamps & Lighting   Posted: 24/02/2010 17:23:24   Subject: Roys Underground Photo/Divers Lamp
[quote="rhychydwr1"]Roy had better tread caefully. I own the copyright to his switch. If he makes another copy I will sue >:( [/quote]

and hopefully use correct spelling in your plaint<
Topic: Roys Underground Photo/Divers Lamp
royfellows

Forum: Lamps & Lighting   Posted: 24/02/2010 13:40:08   Subject: Roys Underground Photo/Divers Lamp
Thing is, I can put anything in it that I can put in a caplamp, and vies verse
Topic: Roys Underground Photo/Divers Lamp
royfellows

Forum: Lamps & Lighting   Posted: 24/02/2010 10:57:51   Subject: Roys Underground Photo/Divers Lamp
[quote="james cartwright"]wow Roy that is a beast of a thing but i like it a lot. Something like that with such charm and character will be see on bargain hunt in years to come fetching thousands. :
Topic: Roys Underground Photo/Divers Lamp
royfellows

Forum: Lamps & Lighting   Posted: 23/02/2010 18:58:05   Subject: Roys Underground Photo/Divers Lamp
Sorry, forgot to add.
The rear plate is secured by 4 corner screws, each has a bracket that enables an "X" of 4mm shockcord. So, mount it on a belt, headband, post sticking up out of the floor, p
Topic: Roys Underground Photo/Divers Lamp
royfellows

Forum: Lamps & Lighting   Posted: 23/02/2010 18:22:46   Subject: Roys Underground Photo/Divers Lamp
[quote="simonrl"]That must be around 2,500 lm? :o [/quote]

I would say at least, the P7s are the D BIN but there are some issues with these. Future lamps will probably have Cree M BIN MCE
Topic: Roys Underground Photo/Divers Lamp
royfellows

Forum: Lamps & Lighting   Posted: 23/02/2010 18:18:11   Subject: Roys Underground Photo/Divers Lamp
I don’t know what you will all make of this, but it works, and works well.

The design is basically very simple, a PVC box surrounded by a copper shroud as a heatsink and conductor. This has
Topic: McAlpine / Penrhyn Quarry - Sale / Fraud case
royfellows

Forum: North Wales   Posted: 22/02/2010 20:59:12   Subject: McAlpine / Penrhyn Quarry - Sale / Fraud case
[quote="simonrl"]£250,000 'sales bonus' in four years between three crooks? :o [/quote]

Source of your information Simon?
Topic: McAlpine / Penrhyn Quarry - Sale / Fraud case
royfellows

Forum: North Wales   Posted: 22/02/2010 20:48:28   Subject: McAlpine / Penrhyn Quarry - Sale / Fraud case
[quote="Manicminer"]Sales Bonus? [/quote]

This is the point I have raised in a parallel thread on ME
Topic: Mines of the Tamar Valley
royfellows

Forum: General Chat   Posted: 22/02/2010 18:43:56   Subject: Mines of the Tamar Valley
[quote="simonrl"][quote="royfellows"]I agree that it needs sorting but its not my turf, mine is central Wales.

However, looking at Regional Editors I am down as "South West England", ouch,
Topic: Mines of the Tamar Valley
royfellows

Forum: General Chat   Posted: 22/02/2010 18:42:56   Subject: Mines of the Tamar Valley
[quote="Tin Miner"]How do you locate the regional editors please....[/quote]

Information and Recources/Contributors

Hope you are well TM, may have an update MJ disk for you short
Topic: Mines of the Tamar Valley
royfellows

Forum: General Chat   Posted: 22/02/2010 18:32:54   Subject: Mines of the Tamar Valley
I agree that it needs sorting but its not my turf, mine is central Wales.

However, looking at Regional Editors I am down as "South West England", ouch, no its central Wales.

More
Topic: Edge of Darkness being remade
royfellows

Forum: General Chat   Posted: 19/02/2010 20:12:39   Subject: Edge of Darkness being remade
Gold with Roger Moore has fantastic cage ride down the vertical to where it hits the vein, then a high speed skip ride down the underlie. (1974)
Yes, yes yes
Topic: SW Selfish picture re(quest).... HOW OLD!!
royfellows

Forum: South West England   Posted: 19/02/2010 19:29:44   Subject: SW Selfish picture re(quest).... HOW OLD!!
I think everyone here aught to stop and think about the history of photography for a moment.

Artist’s sketches were being used up to the 1870s because a photographer needed a virtual carloa
Topic: My Oldham Conversions
royfellows

Forum: Lamps & Lighting   Posted: 15/02/2010 17:30:03   Subject: My Oldham Conversions
Mr Morlock, thanks.

Nothing like an R5, there is a picture on KD web
[url]http://www.kaidomain.com/ProductDetails.aspx?ProductId=10062[/url]
Topic: My Oldham Conversions
royfellows

Forum: Lamps & Lighting   Posted: 15/02/2010 17:25:58   Subject: My Oldham Conversions
Para 3 of the above (Vanoord) paste in is wrong as I expect it was based on paper estimations rather than practical testing as I have done. Anyone with me yesterday would agree with me that the R5 XP-
Topic: My Oldham Conversions
royfellows

Forum: Lamps & Lighting   Posted: 15/02/2010 16:12:34   Subject: My Oldham Conversions
I have never seen an R2 or experimented with one.

Is it small footprint same as the R5
The R5 is about the same as the head of a pin, I kid thee not.

A likely explanation is
Topic: My Oldham Conversions
royfellows

Forum: Lamps & Lighting   Posted: 15/02/2010 14:59:43   Subject: My Oldham Conversions
YES!
This is exactly what I am thinking of doing. Obviously, the nearer the glass a bare emitter, the more light out at the front. And as I have said, it is a fantastic flood, just like the old c
Topic: My Oldham Conversions
royfellows

Forum: Lamps & Lighting   Posted: 15/02/2010 12:27:12   Subject: My Oldham Conversions
CREE R5 Emitters.

Over the weekend I have been testing one of these in a slate mine using an improvised caplamp, and have to give all other lamp builders a warning about these.

I
Topic: Help- Forest Of Dean engine houses / surface remains
royfellows

Forum: General Chat   Posted: 09/02/2010 20:21:22   Subject: Help- Forest Of Dean engine houses / surface remains
Mr ICLOK
PM on the way, please feel free to mention my name when you contact the person recommended in the PM.
Topic: My Oldham Conversions
royfellows

Forum: Lamps & Lighting   Posted: 04/02/2010 18:43:21   Subject: My Oldham Conversions
WorkStar new design

Out of necessity I have had to develop a new version of my WorkStar lamp due to non availability of the cast aluminium reflector unit previously used.
That unit w
Topic: My Oldham Conversions
royfellows

Forum: Lamps & Lighting   Posted: 03/02/2010 18:43:13   Subject: My Oldham Conversions
I have done some thorough testing, what I posted before was TOTAL RUBISH and should be ignored.
I don’t know what went wrong, but it was done rather quickly.

The resistors do not make
Topic: Photographic completion
royfellows

Forum: General Chat   Posted: 29/01/2010 20:06:05   Subject: Photographic completion
Damit.
The piranha have gone, the Uzi has gone, and I no longer hold a Fire Arms Certificate, I suppose I could always run him down with my Skody.

Tell you what though, he is bloody go
Topic: My Oldham Conversions
royfellows

Forum: Lamps & Lighting   Posted: 29/01/2010 15:21:05   Subject: My Oldham Conversions
More

Very roughly.

Vin = 3.5V Iin = 0.9 amps
Vout = 3.2V Iout = 1.02 amps

Watts in = 3.26 watts out = 3.15
Series resistor used with 3 chip AMC 7135 = 0.14 o
Topic: My Oldham Conversions
royfellows

Forum: Lamps & Lighting   Posted: 29/01/2010 09:36:01   Subject: My Oldham Conversions
Last night I did some tests in the dark outside.
The R5 with the 28mm reflector is bloody marvellous, trust me.

With an 18mm reflector its light going everywhere, and worse still use
Topic: My Oldham Conversions
royfellows

Forum: Lamps & Lighting   Posted: 28/01/2010 16:52:40   Subject: My Oldham Conversions
This is just a repeat of what I have posted to ME, for the benefit of those here who dont use that site.

I have just received my R5 from KD and run some tests

Mr Kai Lam velly re
Topic: My Oldham Conversions
royfellows

Forum: Lamps & Lighting   Posted: 15/01/2010 16:40:54   Subject: My Oldham Conversions
Right, now I get it.

There lies the advantage of the lower Vf of the LEDs. I didn't understand you at first. This why I have had to have individual drivers to each LED in my maggie, Crees a
Topic: My Oldham Conversions
royfellows

Forum: Lamps & Lighting   Posted: 15/01/2010 16:19:40   Subject: My Oldham Conversions
The SSC/Cree quads are all low Vf but wont run on single or multi parallel 18650s.

Off the top of my head, hot off charger about 4.16V = 2.2 amps
down to 3.7V = 1.4 amps

Mr
Topic: Welsh Highland Railway
royfellows

Forum: Mine Tramways and Railways   Posted: 15/01/2010 11:49:23   Subject: Welsh Highland Railway
Mmm
I have read all of the comments and am now starting to wonder if there is some local politics involved that we dont know about.
I appreciate that north Wales police are not flavour of th
Topic: Interesting site on LED Mine/caving lights.
royfellows

Forum: Lamps & Lighting   Posted: 15/01/2010 09:20:14   Subject: Interesting site on LED Mine/caving lights.
I thought that I aught to mention that his designs are just simple resistor circuits, as such would give very poor performance in terms of efficiency and light level.
Topic: Welsh Highland Railway
royfellows

Forum: Mine Tramways and Railways   Posted: 14/01/2010 20:40:57   Subject: Welsh Highland Railway
I have just looked at your link Dave, and you are right about this, I am therfore wondering if the problem relates to the 'sweep' in the rails?

Whatever, it looks as though they have a prob
Topic: Welsh Highland Railway
royfellows

Forum: Mine Tramways and Railways   Posted: 14/01/2010 20:23:47   Subject: Welsh Highland Railway
This looks to me like a good old fashioned cockup.
If the rails crossed the road at a right angle as with normal level crossing then no problem, but the danger lies in the sweep which partially f
Topic: My Oldham Conversions
royfellows

Forum: Lamps & Lighting   Posted: 14/01/2010 18:47:48   Subject: My Oldham Conversions
Hi gang

I have just been outside testing the new MagnumStar in the dark, because there is melting snow about it quite misty and one can discern the beam patterns.

At the risk of
Topic: Foty Archive Album (album)
royfellows

Forum: North Wales   Posted: 14/01/2010 14:42:34   Subject: Foty Archive Album (album)
Yes, it’s a reminder of what has been lost.

I can remember in 1986 running down to the car park and my motor and excitedly telling my friend Maureen about my discovery.

The Vott
Topic: Croesor & other mines on S4C (viewable online)
royfellows

Forum: North Wales   Posted: 13/01/2010 20:26:08   Subject: Croesor - really?
[quote="hymac580c"][quote="Tamarmole"]Mind you, you should have seen the van afterwards![/quote]

In 1992 we had a rusty Mk.3 Escort estate. I drove it up to Croesor with the wife, dog and a
Topic: Croesor & other mines on S4C (viewable online)
royfellows

Forum: North Wales   Posted: 13/01/2010 20:18:57   Subject: Croesor - really?
Oh Peter, this is seriously funny.
But its right what I was saying about filmakers, they just have to do it, I dont think they can help it.
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