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Posts by royfellows

Showing 3341 results below:

Author Message
Topic: Fellows lamps forum.
royfellows

Forum: Lamps & Lighting   Posted: 19/02/2018 14:37:57   Subject: Fellows lamps forum.
I have just completed and tested the first X_8 as I chose to call it. basically the innards of the Lynx X2000 moved into the Scorpion. A higher price but better lamp having increased water resistance
Topic: Deep sea mining
royfellows

Forum: General Chat   Posted: 19/02/2018 10:35:44   Subject: Deep sea mining
Worth a look.
http://www.bbc.co.uk/news/resources/idt-sh/deep_sea_mining
Topic: Earthquake?
royfellows

Forum: General Chat   Posted: 19/02/2018 10:15:41   Subject: Earthquake?
[quote="davidat19"]I live close to Cwmstwyth but didn't notice anything. Underground could be different though.[/quote]

I was underground in Lefel Fawr from 12.00 until 18.00 and heard what
Topic: Lliwedd Copper Mine
royfellows

Forum: North Wales   Posted: 16/02/2018 18:11:27   Subject: Lliwedd Copper Mine
I got across years ago but cannot remember anything interesting so probably leads to a collapse.
Is there a truck just inside?
Topic: Where Is It.... ? North Pennines.
royfellows

Forum: General Chat   Posted: 11/02/2018 17:04:33   Subject: Where Is It.... ? North Pennines.
Backdoor?

:lol::lol::lol:

Sorry John, I could not help that one.
Topic: Picking Brains please
royfellows

Forum: Mid Wales   Posted: 06/02/2018 21:02:13   Subject: Picking Brains please
Looks interesting.
Water looks clean so I dont see any pollution issues.

Now I know a professional geologist who would be interested in looking in there when it is opened up. Even if i
Topic: Picking Brains please
royfellows

Forum: Mid Wales   Posted: 06/02/2018 17:04:42   Subject: Picking Brains please
JCB?

Worth it for the landowner who would end up with an interesting feature it the entrance was completely cleared.

However, if there is ochre it would need to be contained with
Topic: Upper Silica Mine: Pumps in situ?
royfellows

Forum: South Wales   Posted: 03/02/2018 11:08:20   Subject: Upper Silica Mine: Pumps in situ?
This is for divers who have used the mine. I am actually prompted on this by Paul's amazing photograph.

The abandonment plans show several pumps at different stages down the incline. I am w
Topic: Fellows lamps forum.
royfellows

Forum: Lamps & Lighting   Posted: 29/01/2018 18:50:55   Subject: Fellows lamps forum.
I could spit!
I ran the part number through Farnell and they have 50 in stock for next day delivery, they even slightly cheaper.
I must have missed them when searching.
I do have to say
Topic: Fellows lamps forum.
royfellows

Forum: Lamps & Lighting   Posted: 29/01/2018 15:35:22   Subject: Fellows lamps forum.
[quote="crickleymal"][quote="royfellows"]

I have had to assemble it using an IP 67 switch as the IP 68 switches ordered before Christmas are still unavailable, and this is a major UK suppli
Topic: Fellows lamps forum.
royfellows

Forum: Lamps & Lighting   Posted: 29/01/2018 15:01:20   Subject: Fellows lamps forum.
Scorpion Latest

I have been testing the prototype EX_Basic (Extreme use)

I have had to assemble it using an IP 67 switch as the IP 68 switches ordered before Christmas are still
Topic: Milwr Tunnel & Olwyn Goch news
royfellows

Forum: North Wales   Posted: 17/01/2018 14:24:08   Subject: Milwr Tunnel & Olwyn Goch news
Thanks Martin for all this, much appreciated.
:thumbsup:
Topic: another mine lost
royfellows

Forum: North East England   Posted: 15/01/2018 12:46:23   Subject: another mine lost
[quote="The Fresh Prince of Portreath"] .......if some of the low hanging fruit was picked.[/quote]

Thats one I must remember, he has away with words as the saying goes
:lol:
Topic: Lefel Goch
royfellows

Forum: North Wales   Posted: 15/01/2018 12:43:19   Subject: Lefel Goch
Looks like a recipe for a blow out!

Its what happens when you block drainage levels off.
Topic: Lefel Goch
royfellows

Forum: North Wales   Posted: 15/01/2018 12:43:19   Subject: Lefel Goch
Looks like a recipe for a blow out!

Its what happens when you block drainage levels off.
Topic: Wanting to join the DCA but have questions
royfellows

Forum: General Chat   Posted: 10/01/2018 21:08:39   Subject: Wanting to join the DCA but have questions
The only balanced perspective on anything is that of the outsider looking in.
Topic: Wanting to join the DCA but have questions
royfellows

Forum: General Chat   Posted: 10/01/2018 12:44:29   Subject: Wanting to join the DCA but have questions
Welcome to the world of caving
:lol:
Topic: Does anyone know what this building was for?
royfellows

Forum: General Chat   Posted: 09/01/2018 16:02:57   Subject: Does anyone know what this building was for?
My money would be on ventilation fan mounted at shaft top. Too small, wrong position, etc to be shaft winder.

The north Pennine building by way is a loco charging shed, I know the place.
Topic: Milwr Tunnel & Olwyn Goch news
royfellows

Forum: North Wales   Posted: 09/01/2018 10:28:24   Subject: Milwr Tunnel & Olwyn Goch news
What a totally brilliant website!
:thumbsup:
Topic: Cwmystwyth Mine - May 1984
royfellows

Forum: Mid Wales   Posted: 05/01/2018 18:41:37   Subject: Cwmystwyth Mine - May 1984
Yes, I will put a link to Johns webpage on the CMT website.
Topic: Calendar 2018 - Total Raised
royfellows

Forum: General Chat   Posted: 05/01/2018 10:26:06   Subject: Calendar 2018 - Total Raised
The very kind support that CMT gets makes the effort I put in all worthwhile.

But please remember everyone, Cwmystwyth isn't mine, it isn't CMTs, its OURS. The mining community.

Topic: Fellows lamps forum.
royfellows

Forum: Lamps & Lighting   Posted: 04/01/2018 20:47:47   Subject: Fellows lamps forum.
I want to be able to launch all models simultaneously, The X12, X8 (same config as current X2000), EX_Basic, and the Dive.

I have a waterproof battery case for the dive, this model will be
Topic: Hapoy new year!
royfellows

Forum: General Chat   Posted: 02/01/2018 19:08:12   Subject: Hapoy new year!
[quote="RAMPAGE"][quote="ObviousSpectre"]Bit late but Happy 2018 all! :thumbsup:[/quote]

Nearly 2019 now! :lol:[/quote]

Freudian slip?
You must be really looking forward to
Topic: Hapoy new year!
royfellows

Forum: General Chat   Posted: 31/12/2017 18:27:00   Subject: Hapoy new year!
Cheers old friend, and the same to you. And hopefully a year of further successes for CMT.
Topic: Battery charging warning
royfellows

Forum: Lamps & Lighting   Posted: 27/12/2017 15:24:45   Subject: Battery charging warning
Yes, that similar to what I was doing but using the blue MF cases. Looks alright.
Topic: Battery charging warning
royfellows

Forum: Lamps & Lighting   Posted: 27/12/2017 11:04:30   Subject: Battery charging warning
[quote="Tamarmole"][quote="RAMPAGE"]Even the Oldham T cells leaked sometimes.[/quote]

I still use an Oldham T everyday at work. I will be sad when it dies as I do have a soft spot for them
Topic: Fellows lamps forum.
royfellows

Forum: Lamps & Lighting   Posted: 27/12/2017 10:27:44   Subject: Fellows lamps forum.
New: The Dragon EX

Same as D1800 but with following changes to Spec:

Analogue design with two simple modes from each switch throw,

Water resistance raised to IP 68 – 5
Topic: Battery charging warning
royfellows

Forum: Lamps & Lighting   Posted: 27/12/2017 10:02:36   Subject: Battery charging warning
[quote="Tamarmole"][quote="RAMPAGE"]Even the Oldham T cells leaked sometimes.[/quote]

Gaffer tape over the vent holes.

I still use an Oldham T everyday at work. I will be sad wh
Topic: Battery charging warning
royfellows

Forum: Lamps & Lighting   Posted: 26/12/2017 21:04:11   Subject: Battery charging warning
Hi John
I have known the lead acid batteries leak, major cause for concern if brought into contact with ropes.

I think that in retrospect, to talk about "the good old days" one has to
Topic: Battery charging warning
royfellows

Forum: Lamps & Lighting   Posted: 26/12/2017 18:41:17   Subject: Battery charging warning
I was told a story by SH of Talybont about a chap who wore a NIFE batty under a wetsuit,..... and it leaked.

You wont want to hear the rest, but he nearly died.
Topic: Battery charging warning
royfellows

Forum: Lamps & Lighting   Posted: 26/12/2017 13:45:24   Subject: Battery charging warning
[quote="Morlock"]Whilst refreshing my understanding of the Vanadium cell I found this little interesting snippet.

From Wiki.

"Lithium Ion batteries, for example, are typically d
Topic: Battery charging warning
royfellows

Forum: Lamps & Lighting   Posted: 26/12/2017 11:31:19   Subject: Battery charging warning
I have just taken a 2 cell Li Ion power bank out of my stock room which was charged on assembly about 2 weeks ago and kept for a customer who doesn't want delivery until after the holiday. The room al
Topic: Happy Christmas
royfellows

Forum: General Chat   Posted: 25/12/2017 09:54:16   Subject: Happy Christmas
I am on my own all day but will no doubt find something to do.

Hope to get out tomorrow.

I was in Devonshire Cavern at Matlock yesterday and then went on to Stoney M, never saw a
Topic: Fellows lamps forum.
royfellows

Forum: Lamps & Lighting   Posted: 23/12/2017 13:11:23   Subject: Fellows lamps forum.
Well here is the finished Scorpion prototype, ready for extensive testing.

[link]113688[linkphoto]113688[/linkphoto][/link]

Fully GoPro Compatible
Max output 3500 lumens
Topic: Battery charging warning
royfellows

Forum: Lamps & Lighting   Posted: 23/12/2017 09:42:21   Subject: Battery charging warning
Off thread, but relevant to current discussion:

Considering the main parts of a typical Transmission & Distribution network, here are the average values of power losses at the different ste
Topic: Battery charging warning
royfellows

Forum: Lamps & Lighting   Posted: 22/12/2017 17:23:18   Subject: Battery charging warning
A funny old thing is that I have an HP Mini 110 netbook and the battery went south a year or so back. All I could find to replace it was a £10 off eBay thing. I expected junk but what I got is quite g
Topic: Fellows lamps forum.
royfellows

Forum: Lamps & Lighting   Posted: 22/12/2017 16:05:27   Subject: Fellows lamps forum.
Hi again
I have just had a letter from the Patents Directorate. It seems that my patent is approved for the heat conduction and dissipation system as used on the Trigon. Finalisation Feb 2018
Topic: Battery charging warning
royfellows

Forum: Lamps & Lighting   Posted: 22/12/2017 08:16:05   Subject: Battery charging warning
[quote="Morlock"]Roy, how many full charge/discharge cycles can one get out of a reputable make 18650, ball park sort of figure?[/quote]

It isn't a 'sudden', its a 'gradual' and its usually
Topic: Battery charging warning
royfellows

Forum: Lamps & Lighting   Posted: 21/12/2017 21:23:09   Subject: Battery charging warning
Genuine though?
Topic: Battery charging warning
royfellows

Forum: Lamps & Lighting   Posted: 21/12/2017 20:29:28   Subject: Battery charging warning
The plane that came down was due to a pallet of Li Ion batteries igniting, but I am unable to determine any more information.

As most are aware on here, the Chinese produce a vast amount of
Topic: Battery charging warning
royfellows

Forum: Lamps & Lighting   Posted: 21/12/2017 19:48:33   Subject: Battery charging warning
You can travel with them but you need to state the watt hour rating, I give this on the web site for my power banks. There is also a max you can take on board an aircraft.

With respect I di
Topic: CALENDAR - LAST CHANCE SALOON!!!
royfellows

Forum: General Chat   Posted: 21/12/2017 17:53:01   Subject: CALENDAR - LAST CHANCE SALOON!!!
I have always thought that the word "should" is such a big, big word considering it only contains six characters.
:lol:
Topic: Battery charging warning
royfellows

Forum: Lamps & Lighting   Posted: 21/12/2017 17:51:06   Subject: Battery charging warning
[quote="AndyJ23Uk"]hey - i can confirm that extreme low temps is very bad for discharge profiles too

[/quote]

NiCad or Li Ion batteries please?

I think that this thre
Topic: Battery charging warning
royfellows

Forum: Lamps & Lighting   Posted: 21/12/2017 14:24:26   Subject: Battery charging warning
I have just been looking at the data sheet for the Panasonic NCR18650B cells used in my most popular lamps.

Charging, as I said should never be done below 0C, and according to manufacturers
Topic: Acrow jacks, trench struts and base jacks
royfellows

Forum: General Chat   Posted: 21/12/2017 11:37:39   Subject: Acrow jacks, trench struts and base jacks
Thanks, I have one that was given me and wondered about sourcing some more.
eBay, yes, should have known.
Topic: Fellows lamps forum.
royfellows

Forum: Lamps & Lighting   Posted: 20/12/2017 17:57:28   Subject: Fellows lamps forum.
Mm, I dont know about that. I am moving into sensible lamps for really sensible people, I have heard that there are quite a few about, but not round our way.

It appears that sensible people
Topic: Fellows lamps forum.
royfellows

Forum: Lamps & Lighting   Posted: 20/12/2017 15:46:32   Subject: Fellows lamps forum.
Hello people

With Christmas 2017 a mere few days away its a good time to wish all my friends and customers a happy Christmas and a good New Year.

Off the usual subjects, here is
Topic: Fellows lamps forum.
royfellows

Forum: Lamps & Lighting   Posted: 16/12/2017 09:07:34   Subject: Fellows lamps forum.
[quote="The Fresh Prince of Portreath"]I will.
;)

Took the trigon out this evening. It's still a very good lamp.[/quote]

A hot date?
:lol:
Topic: Fellows lamps forum.
royfellows

Forum: Lamps & Lighting   Posted: 15/12/2017 19:14:41   Subject: Fellows lamps forum.
You will need to get your order in for the new Scorpion when announced,
You liked the Scurions crisp beam, I took this on board and now use better centre spot reflectors that give same light qual
Topic: Super torches, whats out there?
royfellows

Forum: Lamps & Lighting   Posted: 15/12/2017 14:00:19   Subject: Super torches, whats out there?
You can use an ordinary high power torch and put a clear plastic bag over the end to diffuse the light. One of my tricks.
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